Prüf-, Überwachungs- und Zertifizierungsgemeinschaft
|
|
- Bertram Flowers
- 6 years ago
- Views:
Transcription
1 rüf-, berwachungs- und ertifizierungsgemeinschaft Construction roducts Regulation Berlin, 17 th July 2015 Test Certificate No regarding the suitability of the RetroTek-M Mobile avement Retroreflectometer for measuring the coefficient of retroreflected luminance R L of the surfaces of road markings (This test certificate comprises 13 pages and an appendix of 2 additional page) 1 Originator The order to draft the report was given by Reflective Measurement Systems Ltd. Rear 45 Terenure Road East, Terenure, Dublin 6, Ireland. 2 Brief Determination of the suitability of the RetroTek-M Mobile avement Retroreflectometer with 30 m geometry (referred to below as RetroTek-M ) for measuring the coefficient of retroreflected luminance R L of the surfaces of road markings by way of two different comparative measurement series. 2.1 Comparison with measurements from a portable measuring device Determination of the accuracy of the RetroTek-M by comparing the R L measurements from the RetroTek-M with those obtained with the portable (handheld) retroreflectometer LTL-XL on a road marking test field. The retroreflectometer LTL-XL, manufactured by DELTA Light & Optics, was approved by Strausert e.v. with test certificate of 14 th September 2010 as a measuring device to measure the night-time visibility R L and day-time visibility Q d of road markings. 2.2 Comparison of measurements at different speeds Determination of the dependence of the R L measurements from the RetroTek-M on the speed of the device on a road carrying traffic. 3 Tested measuring device The technical data of the RetroTek-M is determined using the originator's information and a visual inspection. Fleyer Strasse 204, Hagen, Germany strauszert@ivst.de Tel: , Fax:
2 rüf-, berwachungs- und ertifizierungsgemeinschaft Construction roducts Regulation The system operates using a pair of digital CMOS cameras and a projected LED light source. It acquires images at a rate of 20 image sets per second. The image sets are used to calculate the range to the objects being measured so the distance can be used in calculating the R L measurement. The system uses a LED with a colour temperature of about 3000 K projected across a 6 m wide area at a range of 15 m for measurement. The system thresholds the primary image and locates the road lines in this. It measures the intensity of the road lines, or sections of them. It measures the range of the line segments using stereo from a 60 cm span stereo camera pair. The system is calibrated for the lighting intensity variation across the field of view. Using the sample intensity, the range and the X position in view and a general calibration factor, it is calculated the R L of a sample. This can be done for any position in the calibrated area of approximately 5 m x 3 m at a distance of 15 m from the master camera. Special features of the system: The system can simultaneously measure road markings on the left and right sides of a lane. The system can measure continuous as well as dashed road markings at the same run. The maximum width for measuring both sides of a lane is about 4 m. The measurements must be performed in darkness. The technical data of the RetroTek-M is provided in table 1. 2
3 rüf-, berwachungs- und ertifizierungsgemeinschaft Construction roducts Regulation Measuring geometry 30 m, according to CEN-geometry (EN 1436) Observation angle EN 1436: 2.29, ASTM E 1710: 1.05 Illumination angle EN 1436: 1.24, ASTM E 1710: Depth of measuring field 3.0 m (from 13.5 m to 16.5 m in front of the receiver) Width of measuring field 5.0 m Measuring distance in front of 15 m the measuring head Mounting height of light outlet approximately 32 cm Mounting height of receiver approximately 60 cm Measuring speed minimum no limit Measuring speed maximum 120 km/h Measuring range R L mcd m -2 lx Measuring range line width Full line width, up to 30 cm; typically 15 cm Driver display 7" Touch-Screen icture interval 50 msec, typically 1.35 m at 27 m/sec Light source LED lamp, 90 Watts continuous, colour temperature ca K Working life of the lamp operating hours Lens focal length 20 mm Output results format CSV files Connection to laptop Gigabit Ethernet Image output Monochrome image stream with superimposed graphics Operating temperature 0 C to 55 C (32 F F) Storage temperature -15 C to 60 C (5 F F) Humidity non condensing Dimensions (L x W x H) 34 x 76 x 49 cm Weight measuring head 40 kg Standards EN 1436 (R L ), ASTM E 1710 (R L ) Table 1: Technical data of the RetroTek-M according to originator s declaration 4 Measurement location 4.1 Comparison with measurements from a portable measuring device The measurements were taken in a darkened hall at the originator s office. 4.2 Comparison of measurements at different speeds The measurements to chapter 2.2 were taken on the motorway M3 between junction 4 (at Clonee) and junction 5 (near Dunboyne) in both directions of travel. GS coordi- 3
4 rüf-, berwachungs- und ertifizierungsgemeinschaft Construction roducts Regulation nates for start of loop: , ; for loop turn point: , ; for end point: , The lane width at the test site is about 2.8 m to 3.0 m. The outside lane is dashed, the dash length is at 2 m. The inside lane is continuous. The line widths vary from 15 cm to 22 cm. 5 Test procedure Date of measurement: 15 th June Road conditions: Road and marking surface were dry and clean. 5.1 Comparison with a portable measuring device In the darkened hall, R L was measured from 20 test samples of type I or type II. Definition of type I and type II road markings according EN 1436: Type II road markings are road markings with special properties intended to enhance the retroreflection in wet or rainy conditions, type I road markings do not necessarily have such special properties. The test samples were new, not overrun. In table 2 the material and the dimensions of the samples is described. T: C: Ag/dot: Ag/irr: Ta/lb: Ta/d: thermo plastics (extrusion) cold plastics (2 component material) marking consisting on agglomerates with regular arranged dots marking consisting on agglomerates with irregular arranged elements tape with large beads diamond pattern 4
5 rüf-, berwachungs- und ertifizierungsgemeinschaft Construction roducts Regulation Sample no. colour type material dimension (m x m) 1 White I T 1.22 x White I T 1.22 x White I T 2.0 x White I T 2.0 x White I T 2.0 x White I T 2.0 x Yellow I T 2.0 x Yellow I T 2.0 x Yellow I T 1.22 x Yellow I T 1.22 x White I T 2.0 x White I T 2.0 x White I C, Ag 1.5 x White II C, Ag/dot 1.5 x White II C, Ag 1.5 x White II C, Ag/dot 1.5 x White II Ta/d 2.0 x Yellow II Ta/lb 2.0 x Yellow I Ta 2.4 x Yellow II Ta/d 2.0 x 0.15 Table 2: The analysed samples 10 readings were taken for each sample (from the beginning to the end of the sample in equal distances) with the LTL-XL. The arithmetic average value of these 10 readings is shown in column 2 of table 3 as average LTL-XL. Then each sample was positioned in a distance of 15 m in front of the RetroTek-M. The RetroTek-M was mounted on a car according to the dimensions given in table 1. Each sample was arranged successively in three lateral positions: In the line of driving direction (centre) and with an offset of each 1.6 m to the left and to the right hand side. The readings, shown in the columns 3 to 5 in table 3, represent the mean values of R L over the whole area of each sample. In column 6 is shown the average for the readings of the three positions, called as average RetroTek-M. In Column 7 is given the arithmetic average of the averages of the LTL-XL and RetroTek-M values (average of column 2 and 6), called as common average value CA. In column 8 are reported the values Diff RetroTek-M, calculated by the formula Diff RetroTek-M = 100 % (average RetroTek-M - CA)/CA 5
6 rüf-, berwachungs- und ertifizierungsgemeinschaft Construction roducts Regulation Figure 1 in the appendix illustrates the measured values for the LTL-XL, the RetroTek-M and the common average values CA values R L (mcd m -2 lx -1 ) average RetroTek-M common Diff RetroTek-M (%) LTL-XL average sample centre left right average RetroTek-M value CA Mean value of all samples Mean absolute deviation Table 3: Measurement results, sorted by ascending R L values for the LTL-XL and the RetroTek-M and the Diff RetroTek-M The measured values for the average RetroTek-M and the CA values provided in table 3 were used to perform a linear regression analysis: R L (RetroTek-M) = CA r² =
7 rüf-, berwachungs- und ertifizierungsgemeinschaft Construction roducts Regulation NOTE 1: It is a matter of discussion, if it is reasonable to compare the results taken with the handheld LTL-XL and the RetroTek-M, averaged over the three lateral positions: Driving at night, the real illumination and observation geometry is a very complex threedimensional geometry. In contrast to that the geometry defined in the EN 1436 is a simplified geometry which represents the situation of a motorcyclist driving along a (longitudinal) marking. Therefore one could call the EN 1436 geometry as two-dimensional motorcyclist geometry. This kind of geometry is realised in the LTL-XL and other handheld instruments. The same geometry is also working if the readings are recorded with the RetroTek-M for each of the three described sample position. Therefore it is justified to compare the readings of the LTL-XL with the average of the readings for the three sample positions, measured with the RetroTek-M (see also note 2 at chapter 6.1). 5.2 Comparison of measurements at different speeds Between two junctions on M3 (see chapter 4.2), continuous measurements of R L were taken with the RetroTek-M at four different speeds. In the measurement runs, every effort was made to keep the speed as constant as possible. The nominal and the real mean speeds are given in table 4. nominal speed 50 km/h 70 km/h 90 km/h 110 km/h real mean speed 52.6 km/h 71.1 km/h 93.9 km/h km/h Table 4: Nominal and real speed of the four runs Within the test site a stretch of m was chosen and the measurements were averaged out over a distance of 100 m. These mean values are indicated as M 50, M 70, M 90 and M 110 for the four speeds. For each run therefore 2 markings x 2 directions x 20 values M V = 80 values are available. Tables 5 to 8 show the mean values M V (columns 2 to 5), the resulting overall mean M derived from columns 2 to 5 (column 6) and the percentage variance of the values calculated at the four speeds from the overall mean 100 % (M V -M)/M (columns 7 to 10). For the two means series M V with the largest difference in mean values of all samples (recorded in the last line of tables 5 to 8) the regression line was calculated and shown under each table. Figure 2 in the appendix illustrates as example the results of table 5. 7
8 rüf-, berwachungs- und ertifizierungsgemeinschaft Construction roducts Regulation measurement M V : R L mean over 100 m for speed in km/h overall mean M 100 % (M V -M)/M interval M 50 M 70 M 90 M 110 M 50 M 70 M 90 M ,8 70,4 71,3 68,2 69,9-0,18 0,68-2,47 1, ,7 65,7 65,9 65,7 65,8-0,08-0,08-0,08 0, ,1 59,0 59,1 57,2 59,1 3,38-0,17-3,21 0, ,0 62,1 61,6 60,2 61,5 0,85 1,02-2,07 0, ,1 61,2 67,2 59,0 62,4-0,44-1,88-5,41 7, ,0 62,7 62,0 61,6 62,3 1,08 0,60-1,16-0, ,3 57,8 59,5 57,7 58,3-0,04-0,90-1,07 2, ,6 61,7 62,4 62,2 62,2 0,60-0,84-0,04 0, ,2 66,4 67,9 64,0 66,1 0,11 0,42-3,21 2, ,3 56,3 56,1 55,0 56,2 2,00 0,22-2,09-0, ,9 58,6 59,8 59,6 59,2-0,55-1,06 0,63 0, ,2 60,1 62,5 60,6 61,1 0,16-1,64-0,82 2, ,7 59,2 58,7 56,7 58,6 1,92 1,07-3,20 0, ,3 48,8 48,3 48,2 49,2 4,37-0,71-1,93-1, ,6 62,1 61,6 62,5 61,7-1,78 0,65 1,30-0, ,3 58,7 57,7 60,1 58,7-0,68 0,00 2,39-1, ,2 57,4 57,3 57,5 57,6 1,04-0,35-0,17-0, ,1 56,1 55,2 56,8 55,6-2,61 0,99 2,25-0, ,1 64,5 62,9 64,9 63,9-1,17 1,02 1,64-1, ,5 84,0 83,4 83,5 83,1-1,93 1,08 0,48 0,36 Mean value of all samples Mean absolute deviation 61,8 61,6 62,0 61,1 61,6 1,25 0,75 1,29 1,78 Table 5: R L values depending on speed, mean M V over 100 m and the values 100 % (M V -M)/M for the run going north, left marking Linear regression for the means M V with the largest difference in mean values of all samples (recorded in the last line) = M 90 - M 110 : M 90 = M 110 r² =
9 rüf-, berwachungs- und ertifizierungsgemeinschaft Construction roducts Regulation measurement M V : R L mean over 100 m for speed in km/h overall mean M 100 % (M V -M)/M interval M 50 M 70 M 90 M 110 M 50 M 70 M 90 M ,3 86,9 86,8 88,5 87,4-0,09-0,54-0,66 1, ,1 88,1 89,3 89,4 88,7-0,70-0,70 0,65 0, ,5 94,1 95,4 95,8 95,0-0,47-0,90 0,47 0, ,8 105,2 105,2 106,4 105,4-0,57-0,19-0,19 0, ,2 105,8 106,0 106,5 105,9-0,64-0,07 0,12 0, ,1 100,4 103,0 101,7 101,6-0,44-1,13 1,43 0, ,9 89,0 89,1 89,6 89,2-0,28-0,17-0,06 0, ,1 90,6 90,1 92,2 90,8-0,72-0,17-0,72 1, ,4 95,7 95,8 97,8 96,2-0,81-0,49-0,39 1, ,0 84,0 83,8 84,1 84,0 0,03 0,03-0,21 0, ,1 91,2 91,3 91,8 91,4-0,27-0,16-0,05 0, ,0 91,9 91,2 92,9 91,8-0,82 0,16-0,60 1, ,2 93,0 93,7 94,0 93,5-0,29-0,51 0,24 0, ,6 90,8 91,1 91,5 91,0-0,44-0,22 0,11 0, ,8 97,8 98,1 98,3 98,3 0,56-0,46-0,15 0, ,3 100,2 100,1 100,7 100,3-0,02-0,12-0,22 0, ,5 103,4 104,2 103,1 103,6-0,05-0,14 0,63-0, ,7 102,7 102,7 104,2 103,3 0,36-0,60-0,60 0, ,6 107,6 107,0 109,2 107,6-0,93 0,00-0,56 1, ,7 114,4 125,1 116,4 117,7-2,51-2,76 6,33-1,06 Mean value of all samples Mean absolute deviation 96,6 96,6 97,5 97,7 97,1 0,55 0,48 0,72 0,78 Table 6: R L values depending on speed, mean M V over 100 m and the values 100 % (M V -M)/M for the run going north, right marking Linear regression for the means M V with the largest difference in mean values of all samples (recorded in the last line) = M 70 - M 110 : M 70 = M 110 r² =
10 rüf-, berwachungs- und ertifizierungsgemeinschaft Construction roducts Regulation measurement M V : R L mean over 100 m for speed in km/h overall mean M 100 % (M V -M)/M interval M 50 M 70 M 90 M 110 M 50 M 70 M 90 M ,8 63, ,8 62,9-0,20 0,28 0,12-0, ,8 72,0 73,2 72,8 72,7 0,14-0,96 0,69 0, ,9 73,8 74,6 74,3 74,7 1,67-1,14-0,07-0, ,1 73,9 74,3 75,0 74,3-0,30-0,57-0,03 0, ,6 75,8 75,7 76,7 76,2 0,52-0,52-0,66 0, ,0 78,6 78,6 79,0 78,8 0,25-0,25-0,25 0, ,1 80,4 80,2 79,5 80,3 1,00 0,12-0,12-1, ,8 80,1 78,5 78,0 79,1 0,88 1,26-0,76-1, ,9 77,9 78,3 78,5 78,2-0,32-0,32 0,19 0, ,2 87,3 88,5 88,0 88,3 1,08-1,08 0,28-0, ,3 94,6 97,4 97,1 96,1-0,83-1,56 1,35 1, ,3 84,0 86,5 84,7 85,6 1,96-1,90 1,02-1, ,5 77,0 78,1 79,3 78,2 0,35-1,57-0,16 1, ,0 77,9 78,1 79,0 78,5 0,64-0,76-0,51 0, ,5 87,0 87,3 87,0 86,7-1,38 0,35 0,69 0, ,4 92,9 96,1 93,4 93,5-2,19-0,59 2,84-0, ,2 88,4 91,1 88,1 89,5 0,84-1,17 1,84-1, ,4 93,8 98,4 96,6 95,6-2,25-1,83 2,98 1, ,5 94,3 93,3 93,2 93,8 0,72 0,51-0,56-0, ,8 103,6 102,1 102,1 102,7 0,15 0,93-0,54-0,54 Mean value of all samples Mean absolute deviation 83,4 82,8 83,7 83,3 83,3 0, ,78 0,70 Table 7: R L values depending on speed, mean M V over 100 m and the values 100 % (M V -M)/M for the run going south, left marking Linear regression for the means M V with the largest difference in mean values of all samples (recorded in the last line) = M 70 - M 90 : M 70 = M 90 r² =
11 rüf-, berwachungs- und ertifizierungsgemeinschaft Construction roducts Regulation measurement M V : R L mean over 100 m for speed in km/h overall mean M 100 % (M V -M)/M interval M 50 M 70 M 90 M 110 M 50 M 70 M 90 M ,8 66,6 66,7 66,8 66,7 0,11-0,19-0,04 0, ,2 73,8 73,2 74,1 73,6-0,51 0,31-0,51 0, ,9 84,8 84,3 84,8 84,5-0,65 0,41-0,18 0, ,4 94,8 94,8 94,4 94,6-0,21 0,21 0,21-0, ,8 98,4 99,5 98,0 98,4-0,64-0,03 1,09-0, ,6 105,6 107,3 105,9 106,1-0,47-0,47 1,13-0, ,2 107,7 108,2 108,1 107,8-0,56-0,09 0,37 0, ,3 116,7 117,2 117,8 117,3 0,04-0,47-0,04 0, ,4 108,2 107,6 109,0 108,1-0,60 0,14-0,42 0, ,1 115,6 113,7 113,5 114,2-0,11 1,20-0,46-0, ,9 125,4 124,5 125,3 124,8-0,70 0,50-0,22 0, ,3 122,6 119,9 120,3 121,3 0,85 1,09-1,13-0, ,6 113,8 114,0 112,2 113,4 0,18 0,35 0,53-1, ,3 110,8 110,4 110,5 110,3-0,86 0,50 0,14 0, ,2 111,0 110,7 111,1 111,0 0,18 0,00-0,27 0, ,9 107,2 106,8 106,8 106,9-0,02 0,26-0,12-0, ,6 118,8 118,9 119,1 118,9-0,21-0,04 0,04 0, ,8 117,2 116,7 117,4 117,0-0,19 0,15-0,28 0, ,5 112,5 113,3 112,9 113,3 1,06-0,71 0,00-0, ,5 125,5 125,5 126,3 124,7-2,57 0,64 0,64 1,28 Mean value of all samples Mean absolute deviation 106,3 106,9 106,7 106,7 106,6 0,54 0,39 0,39 0,46 Table 8: R L values depending on speed, mean M V over 100 m and the values 100 % (M V -M)/M for the run going south, right marking Linear regression for the means M V with the largest difference in mean values of all samples (recorded in the last line) = M 50 - M 70 : M 50 = M 70 r² = In table 9 are listed the highest positive and negative deviations 100 % (M V - M)/M of M V for all runs and all markings. 11
12 rüf-, berwachungs- und ertifizierungsgemeinschaft Construction roducts Regulation Table Maximum 100 % (M V -M)/M next worse Table 9: Highest positive and negative deviations 100 % (M V -M)/M for all M V 6 Assessment of the measurement results 6.1 Assessment of comparison measurements with a portable measuring device Table 3 shows that the measured values of the RetroTek-M differ from the common average value of both measuring systems (LTL-XL and RetroTek-M) at most with % / %. According to the validation process of the Federal Highway Research Institute (BASt) for road markings and measuring devices a variation of about ± 7.5 % can appear in at most 5 % of all comparative values, the RetroTek-M results are complied with this regulation. Averaged over all 20 samples, both measuring systems provide practically identical measured values: LTL-XL: mcd m - ² lx -1 ; RetroTek-M: mcd m -2 lx -1 ; the coefficient of determination r² amounts to This confirms that the measuring system RetroTek-M provides, within the scope of an acceptable measuring accuracy, the same measured values of the coefficient of retroreflected luminance R L as a portable, handheld measuring device. NOTE 2: In note 1 (chapter 5.1) was stated that it is justified to compare the readings of the LTL-XL with the average of the readings for the three sample positions, measured with the RetroTek-M. But additional calculations (not reported in this certificate) have shown that even at the comparison of the readings of the LTL-XL with the readings of the RetroTek-M, taken for each sample separate position, the limit of 7.5 % is undercut in all cases. 6.2 Assessment of comparison of the measurements at different speeds Tables 5 to 8 indicate that the measured values, averaged over a length of 100 m, are nearly identical at the four measuring velocities. The investigation of the percentage deviation from the common average value (see table 9) reveals that only in one case of the 320 measurement values (red marked in table 5 and 9) = 0.3 %, the measurement value exceeds the limit of 7.5 %. Therewith BASt regulation is fulfilled (also for this test in at most 5 % of all comparative values a variance of more than ± 7.5 % is allowed). The coefficients of determination for the difficult measuring conditions in moving traffic are acceptable. 12
13 rüf-, berwachungs- und ertifizierungsgemeinschaft Construction roducts Regulation The coefficient of retroreflected luminance R L can be detected with a good measuring accuracy by the measuring system RetroTek-M, independent of the measuring velocity. 7 Overall assessment The deviations of the measurement results specified under section 5 for comparison measurements are low overall, especially considering that the difficult measuring conditions (different measuring areas, uneven marking surface, non-homogenous structure of the marking surface, non-homogenous bead distribution) cause inaccuracies that are not attributable to device inaccuracy. By meeting the conditions specified in section 6, the RetroTek-M Mobile avement Retroreflectometer is hereby deemed to be well suitable for the dynamic measurement of the coefficient of retroreflected luminance R L of road markings according to the measuring geometry and measuring conditions given in the European Standard EN 1436 and delivers the same results as a portable retroreflectometer. The measuring results are independent of the measuring speed and are not influenced by the kind and form of the road markings. (Dr. H. Meseberg) Chairman of Strausert e.v. This test certificate has been issued to the best of my knowledge and belief. 13
14 rüf-, berwachungs- und ertifizierungsgemeinschaft Construction roducts Regulation Appendix R L (mcd m -2 lx -1 ) average LTL-XL average RetroTek-M Common average value CA samples Figure 1: Measured values R L for the LTL-XL, the RetroTek-M and the common average value CA (red line) for 20 test samples 14
15 rüf-, berwachungs- und ertifizierungsgemeinschaft Construction roducts Regulation 90 R L (mcd m -2 lx -1 ) km/h 70 km/h 90 km/h 110 km/h mean m interval Figure 2: Measured values R L for the RetroTek-M at the M3 averaged over 100 m for four different speeds, and the average for all speeds (red line). Run going north, left marking 15
Prüf-, Überwachungs- und Zertifizierungsgemeinschaft
Berlin, 19 th September 2014 Test Certificate No. 0913-2014-04 regarding the suitability of the Easylux MiniReflecto retroreflectometer for measuring the coefficient of retroreflected luminance R L and
More information1 Originator The order to draft the report was given by DELTA Light & Optics, Venlighedsvej 4, 2970 Hørsholm/Denmark.
Berlin, 14 th of September 2010 Test Certificate No. 0913-2010-07 regarding the suitability of the LTL-XL retroreflectometer for measuring the luminance coefficient under diffuse illumination Q d and the
More information1 Client The request to draft this report was made by DELTA Light & Optics, Venlighedsvej 4, DK-2970 Hørsholm, Denmark.
Berlin, 6 th of december 2011 Test Certificate No. 0913-2011-02 on the suitability of the LTL-M dynamic retroreflectometer for the dynamic measurement of the coefficient of retroreflected luminance R L
More informationTRANSLATION TEST REPORT FEDERAL HIGHWAY RESEARCH INSTITUTE. (BASt)
Zehntner GmbH Testing Instruments Gewerbestrasse 4 CH-4450 Sissach Switzerland Tel +41 (0)61 953 05 50 Fax +41 (0)61 953 05 51 zehntner@zehntner.com www.zehntner.com TRANSLATION TEST REPORT FEDERAL HIGHWAY
More informationWhite Paper Luminance & Illuminance. Brief explanation of photometry for the application of tunnel lighting control
White Paper Luminance & Illuminance Brief explanation of photometry for the application of tunnel lighting control 1 General This document gives a brief explanation of photometry, the basics of tunnel
More informationA Driving Simulation Based Study on the Effects of. Road Marking Luminance Contrast on Driving Safety. Yong Cao, Jyh-Hone Wang
A Driving Simulation Based Study on the Effects of Road Marking Luminance Contrast on Driving Safety Yong Cao, Jyh-Hone Wang Department of Industrial and Manufacturing Engineering University of Rhode Island,
More informationAN INVESTIGATION INTO MEASURING THE CONTINUOUS WETTING RETROREFLECTIVITY VALUES OF PAVEMENT MARKINGS. A Thesis Proposal ADAM MATTHEW PIKE
AN INVESTIGATION INTO MEASURING THE CONTINUOUS WETTING RETROREFLECTIVITY VALUES OF PAVEMENT MARKINGS A Thesis Proposal by ADAM MATTHEW PIKE Submitted to the Office of Graduate Studies Texas A&M University
More information2007 Technical University of Cluj Napoca, Lighting Engineering Center
Liping Guo, Marjukka Eloholma, and Liisa Halonen. 2007. Luminance monitoring and optimization of luminance metering in intelligent road lighting control systems. Ingineria Iluminatului, volume 9, pages
More informationEvaluation of Sign Retroreflectivity Measurements from the VISUAL Inspection Signs and Panels (VISUALISE) System
Evaluation of Sign Retroreflectivity Measurements from the VISUAL Inspection Signs and Panels (VISUALISE) System A Member of The Texas A&M University System Fan Ye and Paul Carlson Texas Transportation
More informationROAD TUNNEL LIGHTING Lighting power controllers
Lighting power controllers RNIG02E2 rev.2 0206 Via Artigianale Croce, 13 42035 Castelnovo ne Monti (RE) Tel. +39 0522 610 611 Fax. +39 0522 810 813 www.reverberi.it I N D E X 1. PREAMBLE 4 2. ROAD TUNNEL
More informationNighttime Visibility of 3M AWP and 3M 380WR ES Durable Tape under Dry, Wet, and Rainy Conditions
Nighttime Visibility of 3M AWP and 3M 380WR ES Durable Tape under Dry, Wet, and Rainy Conditions Dr. Ala R. Abbas Ms. Priyanka Sarker Department of Civil Engineering University of Akron 1 Acknowledgements
More informationAN INSTRUMENT FOR THE MEASUREMENT OF ROAD SURFACE REFLECTION PROPERTIES
AN INSTRUMENT FOR THE MEASUREMENT OF ROAD SURFACE REFLECTION PROPERTIES Corell, D. D 1, Sørensen, K. 2 1 Technical University of Denmark, DTU Fotonik, 4000 Roskilde, DENMARK, 2 Johnsen Consult, 2100 København
More informationEffect of Environmental Factors on Free-Flow Speed
Effect of Environmental Factors on Free-Flow Speed MICHAEL KYTE ZAHER KHATIB University of Idaho, USA PATRICK SHANNON Boise State University, USA FRED KITCHENER Meyer Mohaddes Associates, USA ABSTRACT
More informationREPORT NO. Projection Lighting Date of Issue: 12/10/11 (Life) Issue G. Description: LED Luminaire Status at: 11/10/11
T e s t R e p o r t REPORT NO. Projection Lighting Date of Issue: 12/10/11 (Life) Issue G Description: LED Luminaire Status at: 11/10/11 Type/Model: Alpha LED Date Received: 24/06/09 (35,000 hrs) Condition
More informationLufft MARWIS-UMB Mobil Advanced Road Weather Information Sensor
Lufft MARWIS-UMB Mobil Advanced Road Weather Information Sensor www.lufft.com/wondermadeingermany Professional Mobile Weather Data Recording. Forget black holes in your weather forecast. You waste too
More informationA Thesis Proposal. Agrawal, Ravi. Submitted to the Office of Graduate Studies of Texas A&M University
Using Finite Element Structural Analysis of Retroreflective Raised Pavement Markers (RRPMs) to Recommend Testing Procedures for Simulating Field Performance of RRPMs A Thesis Proposal By Agrawal, Ravi
More informationA conventional approach to nighttime visibility in adverse weather conditions
A conventional approach to nighttime visibility in adverse weather conditions Romain Gallen, Eric Dumont and Nicolas Hautière Keywords: target visibility, headlight, fog 1 Introduction This paper presents
More informationFINAL CONTRACT REPORT WET NIGHT VISIBILITY OF PAVEMENT MARKINGS: EXECUTIVE SUMMARY. Ronald B. Gibbons, Ph.D. Jonathan Hankey, Ph.D.
FINAL CONTRACT REPORT WET NIGHT VISIBILITY OF PAVEMENT MARKINGS: EXECUTIVE SUMMARY Ronald B. Gibbons, Ph.D. Jonathan Hankey, Ph.D. Irena Pashaj Virginia Tech Transportation Institute Virginia Polytechnic
More informationCZECH TECHNICAL UNIVERSITY IN PRAGUE FACULTY OF TRANSPORTATION SCIENCES
CZECH TECHNICAL UNIVERSITY IN PRAGUE FACULTY OF TRANSPORTATION SCIENCES Bc. Lenka Žaludová THE HEADLIGHT ILLUMINANCE IN FRONT OF THE CAR Master thesis 2012 2 Acknowledgement Hereby I would like to thank
More informationNordic certification system for road marking materials
VTI PM 2015-12-09 Diarienummer: 2015/0593-8.2 Nordic certification system for road marking materials Results of initial performance measurements at the Danish test site 2015 Carina Fors Trond Cato Johansen
More informationLufft MARWIS-UMB Mobile Advanced Road Weather Information Sensor
Lufft MARWIS-UMB Mobile Advanced Road Weather Information Sensor a passion for precision passion pour la précision pasión por la precisión passione per la precisione a www.lufft.com/wondermadeingermany
More informationCertificate: / 29 April 2014
Test report: 936/21218896/A of 20 September 2013 Initial certification: 01 April 2014 Date of expiry: 31 March 2019 Publication: BAnz AT 01 April 2014 B12, chapter IV, No. 5.1 Approved application The
More informationCertificate: / 30. April 2015
Test report: 936/21226418/A of 29 September 2014 Initial certification: 2. April 2015 Date of expiry: 1. April 2020 Publication: BAnz AT 02 April 2015 B5, chapter III number 3.1 Approved application The
More informationLufft MARWIS-UMB Mobil Advanced Road Weather Information Sensor
Lufft MARWIS-UMB Mobil Advanced Road Weather Information Sensor sion for precision passion pour la précision pasión por la precisión passione per la precisione a passion www.lufft.com/wondermadeingermany
More informationPractical 1P4 Energy Levels and Band Gaps
Practical 1P4 Energy Levels and Band Gaps What you should learn from this practical Science This practical illustrates some of the points from the lecture course on Elementary Quantum Mechanics and Bonding
More informationTexas Transportation Institute The Texas A&M University System College Station, Texas
1. Report No. FHWA/TX-07/0-5008-2 4. Title and Subtitle EVALUATION OF WET-WEATHER AND CONTRAST PAVEMENT MARKING APPLICATIONS: FINAL REPORT 2. Government Accession No. 3. Recipient's Catalog No. Technical
More informationThe official directions are written in Chinese, this English edition is for your reference only -1-
Refer to: R128 00-S2 74.1 Effective Date and Scope: 74.1.1 Effective date from 2017/1/1, the new types of LED replaceable light sources and from 2019/1/1 the all types of LED replaceable light sources
More informationLED light engines LED compact. Module SLE G7 ADV Modules SLE ADVANCED
w LED light engines Module SLE G7 ADV Modules SLE ADVANCED Product description For spotlights and downlights For operating with SELV Driver Luminous flux up to 6,18 lm at tp = 65 C High efficacy up to
More informationMedical Oxygen Regulators
Medical Oxygen Regulators 55B Range regulators are designed for mobile use in demanding conditions. The main material of manufacture is brass. Proven durability means these regulators are sold with a 5
More informationTest Report. Report No.: EED35I R1. Address : 701 Millennium Boulevard Greenville, SC : P , P , P , P
Test of One Model of LED Track Head Report No.: EED35I000703-2R Prepared for : Progress Lighting Address : 70 Millennium Boulevard Greenville, SC 29607 Model Name : P9082 Model No. : P9082-28, P9082-3,
More informationTest Report. Report No.: EED35I Address : 701 Millennium Boulevard Greenville, SC : P , P , P , P
Test of One Model of LED Track Head Report No.: EED35I000702-2 Prepared for : Progress Lighting Address : 70 Millennium Boulevard Greenville, SC 29607 Model Name : P9062 Model No. : P9062-28, P9062-3,
More informationLM Test Report. for MLS CO., LTD. Linear Ambient Luminaires Model: MT8N20-A
LM-79-08 Test Report for MLS CO., LTD NO.1 MULINSEN RD XIAOLAN TOWNSHIP ZHONGSHAN City, GUANGDONG Linear Ambient Luminaires Model: MT8N20-A Laboratory: Leading Testing Laboratories NVLAP CODE: 200960-0
More informationAN INVESTIGATION INTO THE PREDICTIVE PERFORMANCE OF PAVEMENT MARKING RETROREFLECTIVITY MEASURED UNDER VARIOUS CONDITIONS OF CONTINUOUS WETTING
AN INVESTIGATION INTO THE PREDICTIVE PERFORMANCE OF PAVEMENT MARKING RETROREFLECTIVITY MEASURED UNDER VARIOUS CONDITIONS OF CONTINUOUS WETTING A Thesis by ADAM MATTHEW PIKE Submitted to the Office of Graduate
More informationMODELING PERIPHERAL VISIBILITY UNDER HEADLAMP ILLUMINATION
Bullough 1 MODELING PERIPHERAL VISIBILITY UNDER HEADLAMP ILLUMINATION Transportation Research Board 16th Biennial Symposium on Visibility and Simulation Iowa City, IA, June 2-4, 2002 John D. Bullough Lighting
More informationLM Test Report. for MLS CO., LTD. Linear Ambient Luminaires Model: MT5Z02-6
LM-79-08 Test Report for MLS CO., LTD NO.1 MULINSEN RD XIAOLAN TOWNSHIP ZHONGSHAN City, GUANGDONG Linear Ambient Luminaires Model: MT5Z02-6 Laboratory: Leading Testing Laboratories NVLAP CODE: 200960-0
More informationLM Test Report. for MLS CO., LTD. Linear Ambient Luminaires Model: MT5Z02-9
LM-79-08 Test Report for MLS CO., LTD NO.1 MULINSEN RD XIAOLAN TOWNSHIP ZHONGSHAN City, GUANGDONG Linear Ambient Luminaires Model: MT5Z02-9 Laboratory: Leading Testing Laboratories NVLAP CODE: 200960-0
More informationLED light engines LED linear / area. Module CLE Quadrant G3 ADV Modules CLE ADVANCED
Module CLE Quadrant G3 ADV Modules CLE ADVANCED Product description Ideal for round shaped and flat ceiling and pendant luminaires THE solution to realise XXL luminaires For uniform illumination of prestige
More informationPHASED OUT. LED light engines LED linear / area. Module CLE Quadrant G2 ADV Modules CLE ADVANCED
Product description Ideal for round shaped and flat ceiling and pendant luminaires THE solution to realise XXL luminaires For uniform illumination of prestige areas or rooms designed to impress High Output
More informationFinal Report Phase I. Temporary Wet-Weather Pavement Markings for Work Zones
Highways for LIFE Technology Partnerships Program Final Report Phase I Temporary Wet-Weather Pavement Markings for Work Zones Project Summary This project aims to refine and evaluate a paint and drop-on
More informationPractical 1P4 Energy Levels and Band Gaps
Practical 1P4 Energy Levels and Band Gaps What you should learn from this practical Science This practical illustrates some of the points from the lecture course on Elementary Quantum Mechanics and Bonding
More informationTHE INFLUENCE OF LENS HAZE ON HEADLAMP BEAM PATTERNS
UMTRI-98-13 TE INFLUENCE OF LENS AZE ON EADLAMP BEAM PATTERNS Michael Sivak Michael J. Flannagan Shinichi Kojima Eric C. Traube April 1998 TE INFLUENCE OF LENS AZE ON EADLAMP BEAM PATTERNS Michael Sivak
More informationASSOCIATION POUR LA CERTIFICATION DES MATERIAUX ISOLANTS
Revision index Date of implementation A 15/03/2013 ASSOCIATION POUR LA CERTIFICATION DES MATERIAUX ISOLANTS 4, avenue du Recteur-Poincarré, 75782 Paris Cedex 16 Tel. 33.(0)1.64.68.84.97 Fax. 33.(0)1.64.68.83.45
More informationTEST REPORT IEC Photobiological safety of lamps and lamp systems
age 1 of 20 Test Report issued under the responsibility of: Intertek Testing Services Shenzhen Ltd. TEST REORT hotobiological safety of lamps and lamp systems Report Reference No.... : 140729054GZU-002
More informationMeasurement method for the proficiency testing program
APLAC T088 Appendix Measurement method for the proficiency testing program Introductions This measurement method is prepared for use by the APLAC Proficiency Testing Program Photometric measurement of
More informationAppendix B1. Reports of SMU
Appendix B1 Reports of SMU Euromet Project 600 Comparison of Surface Roughness Standards /13 EUROMET SUPPLEMENTARY COMPARISON SURFACE TEXTURE Project No. 600 Final Report Elaborated by: M. Szmicskova Bratislava,
More informationTexas Transportation Institute The Texas A&M University System College Station, Texas
1. Report No. FHWA/TX-03/4150-1 4. Title and Subtitle ANALYSIS OF TXDOT THICKNESS MEASUREMENT PROCEDURES FOR THERMOPLASTIC PAVEMENT MARKINGS Technical Report Documentation Page 2. Government Accession
More informationMOY/SCMI/36 SPECIFICATION OF ACCURACY FOR A PRECISION CLINOMETER
Centre for Basic, Thermal and Length Metrology National Physical Laboratory MOY/SCMI/36 SPECIFICATION OF ACCURACY FOR A PRECISION CLINOMETER A Watts Precision Clinometer fitted with a circular glass scale
More informationCERTIFICATE of Product Conformity (QAL1 )
ATÜVRheinland Precisely Right. CERTIFICATE of Product Conformity (QAL1 ) Certificate No.: 0000040212 03 Certified AMS: Manufacturer: Test lnstitute: Fidas 200 S respectively Fidas 200 for pariiculate matter
More informationLatest generation testo air velocity & IAQ probes with cable handle. Instruction manual
Latest generation testo air velocity & IAQ probes with cable handle Instruction manual Contents Contents 1 About this document... 5 2 Safety and disposal... 5 3 System description... 6 4 Description of
More informationPLPVQ 940A. Preliminary For Reference only. Subject to change. VCSEL pulsed laser in small footprint QFN W pulsed power Preliminary Version 0.
2018-03-08 VCSEL pulsed laser in small footprint QFN - 0.6 W pulsed power Preliminary Version 0.1 PLPVQ 940A Features: Multimode VCSEL Optical output power 0.6 W (pulsed) Laser wavelength 940 nm Laser
More informationHWA CHONG INSTITUTION 2018 JC2 PRELIMINARY EXAMINATION. Monday 17 September hours
HWA CHONG INSTITUTION 08 JC PRELIMINARY EXAMINATION MATHEMATICS Higher 9758/0 Paper Monday 7 September 08 hours Additional materials: Answer paper List of Formula (MF6) Cover Page READ THESE INSTRUCTIONS
More informationSIRWEC th International Road Weather Conference
SIRWEC 2018 19th International Road Weather Conference Test methods for sensors of road weather stations Horst Badelt Sandra Eimermacher Federal Highway Research Institute Germany Content - test field
More informationApproval Block. Prepared by: Signature Date Evan Parnell 08 NOV Reviewed by: Signature Date. Approved by: Signature Date
ATS-SOI-3660 Page: 1 of 6 Approval Block Prepared by: Signature Date Evan Parnell 08 NOV 2013 Reviewed by: Signature Date Brian Flynn 08 NOV 2013 Approved by: Signature Date Kristal Jewell 08 NOV 2013
More informationTEST REPORT. Page 1 of 11
Applicant: Radomir Klabal Komenskeho 446, Bilovice nad Svitavou, Czech Republic Sample Description Product : Compact Fluorescent Lamp Model No. : CFL15T2S27E27 Brand Name : Divetta Electrical Rating :
More informationLED light engine / OLED LED linear / area
LED light engine / OLED Module CLE G1 25mm ADV IND Modules CLE ADVANCED Product description LED modules for diffuse highbay applications Luminous flux: 26, lm per module Efficacy of the module up to 155
More informationCERTIFICATE of Product Conformity (QAL1 )
ATÜVRheinlancl Precisely Right. CERTIFICATE of Product Conformity (QAL1 ) Certificate No.: 0000040212 01 Certified AMS: Manufacturer: Test lnstitute: Fidas 200 S respectively Fidas 200 for particulate
More informationLM Test Report. For MaxLite Inc. LED Commercial Down lights Model: RR82540W
LM-79-08 Test Report For MaxLite Inc. 12 York Ave West Caldwell NJ 07006, USA LED Commercial Down lights Model: RR82540W Laboratory: Leading Testing Laboratories NVLAP CODE: 200960-0 Tel: +86-571-56680806
More informationLM Test Report. For Elec-Tech International Co., Ltd. T8 LED TUBE Model: XX(XX:41-50)
LM-79-08 Test Report For Elec-Tech International Co., Ltd NO.1 JINFENG ROAD,TANGJIAWAN TOWN,XIANGZHOU DISTRICT,ZHUHAI CITY,GUANGDONG PROVINCE T8 LED TUBE Model: 542991XX(XX:41-50) Laboratory: Leading Testing
More informationLM Test Report. For Elec-Tech International Co., Ltd. T8 LED TUBE Model: XX(XX:41-50)
LM-79-08 Test Report For Elec-Tech International Co., Ltd NO.1 JINFENG ROAD,TANGJIAWAN TOWN,XIANGZHOU DISTRICT,ZHUHAI CITY,GUANGDONG PROVINCE T8 LED TUBE Model: 542961XX(XX:41-50) Laboratory: Leading Testing
More informationLED light engine / OLED LED compact. Module DLE G4 ADV Modules DLE
w LED light engine / OLED Module DLE G4 ADV Modules DLE Product description For downlights Luminous flux up to 3,71 lm at tp = 65 C High efficacy up to 185 lm/w for the LED module at tp = 25 C High system
More informationTurbine Meter TRZ 03 PRODUCT INFORMATION. Reliable Measurement of Gas
Turbine Meter TRZ 0 PRODUCT INFORMATION Reliable Measurement of Gas TURBINE METER TRZ 0 Method of operation, Construction Method of operation The TRZ 0 turbine meter is a flow meter suitable for gas measurement
More informationThrough Hole Lamp Product Data Sheet LTL-403G Spec No.: DS Effective Date: 01/13/2004 LITE-ON DCC RELEASE
Through Hole Lamp Product Data Sheet LTL-403G Spec No.: DS-20-95-0001 Effective Date: 01/13/2004 Revision: A LITE-ON DCC RELEASE BNS-OD-FC001/A4 LITE-ON Technology Corp. / Optoelectronics No.90,Chien 1
More informationLOW E SATINÉ 5500 LOW E
SCREEN LOW E INTELLIGENT FABRICS FOR SOLAR PROTECTION Width: 240 cm www.mermet.co.uk LOW E THERMAL SHIELD FOR INTERNAL BLINDS 76% OF SOLAR REFLECTANCE 17% EMISSIVITY for thermal comfort all year round
More informationHigh Intensity LED, ø 5 mm Untinted Non-Diffused
High Intensity LED, ø 5 mm Untinted Non-Diffused Color Type Technology Angle of Half Intensity ± TLHK5.. AlInGaP on GaAs 9 Yellow TLHE5.. AlInGaP on GaAs 9 TLHG5.. GaP on GaP 9 Pure green TLHP5.. GaP on
More informationDETAIL SPECIFICATION SHEET
INCH POUND MIL DTL 28803/1E 1 September 2018 SUPERSEDING MIL D 28803/1E 4 September 2013 DETAIL SPECIFICATION SHEET DISPLAY, OPTOELECTRONIC, SEGMENTED READOUT, BACKLIGHTED, STYLE II (LIGHT EMITTING DIODE),
More informationMetallic materials Knoop hardness test. Part 1: Test method. Matériaux métalliques Essai de dureté Knoop Partie 1: Méthode d'essai
Provläsningsexemplar / Preview INTERNATIONAL STANDARD ISO 4545-1 Second edition 2017-12 Metallic materials Knoop hardness test Part 1: Test method Matériaux métalliques Essai de dureté Knoop Partie 1:
More informationSPECIFICATION. Checked By Checked By Checked By Checked By Approval. Proposed By Checked By Checked By Checked By Approval
SPECIFICATION 1 Product : 5mm WHITE LAMP 2 Part No : 3 Customer : 4 Date : 2008. 06. 10 Ver.1.1 Customer : Checked By Checked By Checked By Checked By Approval Manufacturer : ITSWELL Co., LTD Proposed
More information16 Appendix 16 Electrical Research Association Report
Guide to the Wiring Regulations 16 Appendix 16 Electrical Research Association Report (ERA) report on armoured cables with external CPCs The attached report was commissioned by the ECA and is copyright
More informationEN15518 A European Standard for Road Weather Information Systems (RWIS) Pierre-Alain Brodard
EN15518 A European Standard for Road Weather Information Systems (RWIS) Paper # 0053 Pierre-Alain Brodard Covenor of RWIS Project Work Group Boschung Mecatronic SA Organization (general) European Comittee
More informationSTANDING WAVES AND THE INFLUENCE OF SPEED LIMITS
STANDING WAVES AND THE INFLUENCE OF SPEED LIMITS H. Lenz, R. Sollacher *, M. Lang + Siemens AG, Corporate Technology, Information and Communications, Otto-Hahn-Ring 6, 8173 Munich, Germany fax: ++49/89/636-49767
More information(65th GRE, March 2011, agenda item 4(d))
Transmitted by the expert from GTB Informal document No. GRE-65-22 (65th GRE, 28-31 March 2011, agenda item 4(d)) Note: The following paper has been produced by Dr Karl Manz, chairman of the GTB ADB (Adaptive
More informationDraft pren EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM 16 th November 2001
pren 12966: November 16 th, 21 (enquiry version) Page 1 of 62 Draft pren 12966-1 EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM 16 th November 21 UDC: aaa.a;aaa.aa;aaa.aaa Descriptors: Standardization,
More information0.43" Single Character DLO4135/DLG " Single Character DLO7135/DLG x 7 Dot Matrix Intelligent Display Devices with Memory/Decoder/Driver
.3" Single Character DLO3/DLG3.68" Single Character DLO3/DLG3 x Dot Matrix Intelligent Display Devices with Memory/Decoder/Driver Lead (Pb) Free Product - RoHS Compliant SUPER-RED: DLO3, DLO3 GREEN: DLG3,
More informationEXPERIMENTAL DETERMINATION OF SPECTRAL AND ANGULAR DEPENDENT OPTICAL PROPERTIES OF INSULATING GLASSES
CISBAT 2005, Proceedings, EPFL 2005, p. 441-446 EXPERIMENTAL DETERMINATION OF SPECTRAL AND ANGULAR DEPENDENT OPTICAL PROPERTIES OF INSULATING GLASSES R. Steiner, P. Oelhafen, G. Reber and A. Romanyuk Institute
More informationRoadway Traffic Noise Feasibility Assessment. Conservancy Subdivision. Ottawa, Ontario
Conservancy Subdivision Ottawa, Ontario REPORT: GWE17 151 Traffic Noise Prepared For: Andrew Finnson Barrhaven Conservancy East Inc. Ottawa, Ontario Prepared By: Joshua Foster, P.Eng., Principal Omar Daher,
More informationMini half-watt SMD 3.5mm (120 Viewing Angle)
(120 Viewing Angle) Series Compact Package Outline of 3.5 x 3.5 x 1.2 mm Robust energy-efficient design with long operating life Low thermal resistance Exceptional spatial uniformity Compatible to IR reflow
More informationState Unitary Enterprise Production Amalgamation Novosibirsk Instrument-Making Plant PN-6K. Servise Manual
State Unitary Enterprise Production Amalgamation Novosibirsk Instrument-Making Plant Night Sight PN-6K Servise Manual Contents 1. General directions 4 2. Specifications 5 3. Delivery set 6 4. Safety regulations
More informationLED Entryway Light RoHS
72508 LED Entryway Light RoHS QPL ID # PSMN8JUU Model: 72508 Input Voltage 120-277 VAC 60HZ Input Current 0.5A Max @120V Input Power 25W Power Factor PF 0.95 OVERALL LAMP PARAMETERS Luminance 3,121 LM
More informationTEST REPORT. Test Method : See the attached sheets.
Applicant: Radomir Klabal Komenskeho 446, Bilovice nad Svitavou, Czech Republic Sample Description Product : Compact Fluorescent Lamp Model No. : CFL20T2S27E27 Brand Name : Divetta Electrical Rating :
More informationOperation & Maintenance
PM CEMS Operation & Maintenance Sanjeev K. Kanchan Programme Manager- Environment Governance (Industry) Centre for Science and Environment, 41, Tughlakabad Institutional Area, New Delhi 110062 Tel: 011-40616000,
More informationISO INTERNATIONAL STANDARD. Metallic materials Vickers hardness test Part 3: Calibration of reference blocks
INTERNATIONAL STANDARD ISO 6507-3 Third edition 2005-12-15 Metallic materials Vickers hardness test Part 3: Calibration of reference blocks Matériaux métalliques Essai de dureté Vickers Partie 3: Étalonnage
More informationTime Space Diagrams for Thirteen Shock Waves
Time Space Diagrams for Thirteen Shock Waves Benjamin Coifman Institute of Transportation Studies 19 McLaughlin Hall University of California Berkeley, CA 9472 zephyr@eecs.berkeley.edu http://www.cs.berkeley.edu/~zephyr
More informationMetallic materials Brinell hardness test. Part 3: Calibration of reference blocks
INTERNATIONAL STANDARD ISO 6506-3 Third edition 2014-10-01 Metallic materials Brinell hardness test Part 3: Calibration of reference blocks Matériaux métalliques Essai de dureté Brinell Partie 3: Étalonnage
More informationThis document is a preview generated by EVS
INTERNATIONAL STANDARD ISO 13196 First edition 2013-03-01 Soil quality Screening soils for selected elements by energydispersive X-ray fluorescence spectrometry using a handheld or portable instrument
More informationDESIGN CRITERIA FOR TUNNEL LIGHTING
DESIGN CRITERIA FOR TUNNEL LIGHTING Huo-Yen Liu 1. INTRODUCTION There are many mountains in the longitudinal center of Taiwan, which slow down transportation between the west and east in Taiwan. In order
More informationCat# LED High Bay
Cat# 71403 LED High Bay Model: 71403 Input Voltage Input Current Input Power Power Factor 100-277VAC 50/60HZ 1.7A Max 144 W PF 0.92 OVERALL LAMP Luminance 17371 LM PARAMETERS Luminous Efficiency 118 LM/W
More informationEVALUATING ALL-WEATHER PAVEMENT MARKINGS IN ILLINOIS: VOLUME 1
CIVIL ENGINEERING STUDIES Illinois Center for Transportation Series No. 15-018 UILU-ENG-2015-2024 ISSN: 0197-9191 EVALUATING ALL-WEATHER PAVEMENT MARKINGS IN ILLINOIS: VOLUME 1 Prepared By Neal Hawkins
More informationREPORT issued by an Accredited Testing Laboratory
issued by an Accredited Testing Laboratory Contact person RISE Maria Nilsson Tengelin 2018-01-09 MTt7P09138 1 (2) Measurement Science and Technology +46 516 54 51 maria.nilssontengelin@ri.se Universelt
More informationSPECIFICATIONS OF CITILIGHT 1 / Scope of Application These specifications apply to chip type LED lamp, CITILIGHT, model CL-822 -U1D-T.
SPECIFICATIONS OF 1 / 11 1. Scope of Application These specifications apply to chip type LED lamp,, model CL-822 -U1D-T. 2. Part code C L - 8 2 2 - U 1 D - T Series 822 : White LED for general lighting.
More informationPage 2 of 14 Report No.: Test sample... : Type of test object... : LED Downlight LED Downlight
Page 2 of 14 Report No.: 68.184.15.296.01 Test sample... : Type of test object... : LED Downlight LED Downlight Trade mark... : Model and/or type reference... : EF150-26W-840 Rating(s)... : 220-240V~;
More information2008 Znack Publishing House. Reprinted with permission.
Aleksanteri Ekrias, Liping Guo, Marjukka Eloholma, and Liisa Halonen. 2008. Intelligent road lighting control in varying weather conditions. Light & Engineering, volume 16, number 1, pages 72 78. 2008
More informationStandard Highway Sign Border Specifications
Standard Highway Sign Border Specifications A Radius Radius B C SIGN SIZE SIGN SIZE Variable Radius B C SIGN SIZE BORDER WIDTHS A B C CORNER RADIUS 18 4 30 36 48 60.375.375.375 1.375.375.438 1.5.5.375.65
More informationISEmax CAM40/CAS40. Technical Information
Technical Information Online measurement of nutrient parameters Ion-selective electrode system for the continuous measurement of ammonium and nitrate Application The ion-selective electrode system works
More informationApplication Note 02_01 TELUX
Specification, Thermal management and design-in 1. Introduction The performance and reliability of TELUX LED are mainly determined by a proper thermal management of the complete lamp system. The thermal
More informationL ight color influence on obstacle recognition in road lighting. 1. Introduction
Computer Applications in Electrical Engineering L ight color influence on obstacle recognition in road lighting Małgorzata Górczewska, Sandra Mroczkowska, Przemysław Skrzypczak Poznań University of Technology
More informationLITE-ON TECHNOLOGY CORPORATION
Features * Package in 8mm tape on 7" diameter reels. * Compatible with automatic placement equipment. * Compatible with infrared and vapor phase reflow solder process. * EIA STD package. * I.C. compatible.
More informationGlare and visibility by headlight for pedestrian and elderly driver. 22 October 2018 National Traffic Safety and Environment Laboratory
Glare and visibility by headlight for pedestrian and elderly driver 22 October 2018 National Traffic Safety and Environment Laboratory 1 The traffic accident number s on the decline from around 2001 in
More informationINSTRUCTION MANUAL Milwaukee Refractometer MA881 Refractometer for Invert Sugar Measurements
www.milwaukeeinst.com INSTRUCTION MANUAL Milwaukee Refractometer MA881 Refractometer for Invert Sugar Measurements www.milwaukeeinst.com 1 Instruction Manual MA881 Refractometer for Invert Sugar Measurements
More informationThe Influence of Fog on Motion Discrimination Thresholds in Car Following
University of Iowa Iowa Research Online Driving Assessment Conference 2007 Driving Assessment Conference Jul 11th, 12:00 AM The Influence of Fog on Motion Discrimination Thresholds in Car Following Stéphane
More informationRoHS. Dimming: PWM/VR/0-10V QPL ID # PL21D5Q1B95E. Cat# W LED FlatPanel Slipfitter Mount. EPA Rating 2.
Cat# 71893 380W LED FlatPanel Slipfitter Mount OVERALL LAMP PARAMETERS LED DRIVER LED Input Voltage Input Current Input Power Power Factor Luminance Luminous Efficiency CRI Beam Angle Main Structure Output
More information