Alternatives for Pedestrian Safety Measures on Boston Post Road at Osborn School

Transcription

1 Alternatives fr Pedestrian Safety Measures n Bstn Pst Rad at sbrn Schl Alternate 1 Bstn Pst Rad Diet This alternative prpses implementing a diet (i.e. lane reductin) n Bstn Pst Rad (BPR) between Eldridge Place and ld Pst Rad. The diet wuld result in ne nrthbund travel lane n BPR and tw lanes in the suthbund directin. The existing traffic signal and lane striping at the akland Beach Avenue/sbrn Rad/BPR intersectin wuld be mdified t prvide left-turn nly lanes n BPR in each directin. Under the striping plan the tw nrthbund travels lanes wuld be reduced t ne and this lane wuld be shifted apprximately six feet frm the edge f the existing curb. The existing tw lane cnfiguratin suthbund wuld be mdified t prvide a right-nly lane int the sbrn Schl access drive t accmmdate the ff-site queuing that ccurs during schl pick-up and drp-ff hurs. Curbs wuld be extended n Snn Drive t neckdwn the width f the rad frm apprximately 40 t 24 feet. There wuld be n change t the existing sidewalk between Snn Drive and akland Beach Avenue, except the sidewalk wuld be expanded n the sutheast crner f the akland Beach Avenue/BPR intersectin t prvide a larger pedestrian queuing area. Eliminating ne nrthbund travel lane and shifting this lane six feet away frm the curb edge addresses safety cncerns that traffic is t clse t the existing sidewalk between Snn Drive and akland Beach Avenue. The alternative reinfrces use f the existing pedestrian signal and crssing guard at the akland Beach Intersectin. The diet prvides an estimated reductin in travel speeds by 2-3 m.p.h. The neck-dwn f Snn Drive reduces crssing distance f this street and imprves pedestrian visibility. There is n change in vehicle level f service with this alternative. Estimated Cst $65,000 Alternate(s) 2 Snn Drive This alternative includes all f the imprvements in Alternative 1, but als adds a crsswalk n BPR at Snn Drive. The criteria (i.e. warrants ) are nt met fr a crsswalk at this lcatin based n the traffic and pedestrian data analyzed by the City s cnsulting traffic engineer. Crsswalks have many safety cncerns and will require a crssing guard fr students and ther imprvements. Alt. 2A - The crsswalk culd be raised by incrprating a speed table int its design. A speed table has less vertical elevatin than a speed hump. It raises the surface f the rad by three inches and has a flat sectin n tp f ten r mre feet. A speed table culd reduce speeds by an estimated 6-7 m.p.h. Estimated Cst: add $15,000 t Alt. 1 Alt. 2B - Adding a center median after the cmpletin f the diet wuld require that a prtin f the diet striping be remved and restriped t prvide a painted (i.e. r raised (i.e. curbed and median in the center f BPR. It wuld prvide a break in the crsswalk walk, which wuld imprve pedestrian safety. This alternative, hwever, wuld require that the nrthbund lane be shifted against the existing curb and reduce separatin frm the adjacent BPR sidewalk. Estimated Cst: Add $20,000 - $50,000 t Alt 2a. Alt. 2C Pedestrian safety culd be further enhanced if the diet cnfiguratin was maintained and a center median (either flush r raised) was added t BPR. A dedicated right-turn lane int sbrn Schl access drive wuld be required t accmmdate a center median. Estimated Cst: Add $55,000 t Alt. 2b Alternate 3 Snn Drive Signal Alternative 3 includes a traffic signal at the Bstn Pst Rad/Snn Drive intersectin and culd be added t Alternative(s) 2. The criteria (i.e. warrants ) are nt met fr a traffic signal at this lcatin based n the traffic and pedestrian data analyzed by the City s cnsulting traffic engineer. Upgrades t the existing signals and ld Pst Rad and sbrn/akland Beach wuld have t be made s that the three signals are prperly crdinated t nt adversely impact existing vehicle service levels. This alternative wuld require a crssing guard fr students. Estimated Cst: Add $165,000 t Alts. 2A, 2B r 2C. Additinal Infrmatin: Jhn Cllins Engineers, P.C. Drawings Alternate 1: Drawing SP-1 Alternate 2A: Drawing SP-2 Alternate 2B: Drawings SP-3 and SP-4 Alternate 2C: Drawing SP-5 Alternate 3: Drawings SP-2, SP-4 & SP-5 Jhn Cllins Engineers, P.C. Analysis: Peak Hur Traffic Vlume Figures 1 and 2. Table 1: evel f Service Summary Table Table 2: Queuing Summary Table Table 3: Signal Warrants Analysis Traffic Cunt Tables Speed Impacts f Traffic Calming Measures Rye City, Y Planning Department March 2010

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9 TABE 1 EVE F SERVICE SUMMARY TABE 2009 EXISTIG TRAFFIC VUMES AM PM AM 2009 EXISTIG TRAFFIC VUMES WITH PRPSED DIET 2009 EXISTIG TRAFFIC VUMES WITH PRPSED DIET AD RIGHT TUR AE AT S DRIVE PM AM PM 2009 EXISTIG TRAFFIC VUMES WITH PRPSED DIET, RIGH TUR AE AD TRAFFIC SIGA AT S DRIVE V/C S V/C S V/C S V/C S V/C S V/C S V/C S V/C S 1 U.S. RUTE 1 & SIGAIZED D PST RAD B T 0.44 B[18.0] 0.29 B[11.8] T 0.24 A[6.3].27+ A[9.6] 0.24 B[11.6] 0.27 B[14.2] 0.24 A[9.8] 0.27 B[15.1] R 0.31 A[1.2] 0.33 A[1.0] R 0.25 A[0.6] 0.32 A[1.4] 0.25 A[0.7] 0.32 A[0.5] 0.25 A[0.8] 0.32 A[1.0] SB 0.13 C[21.9] 0.19 C[26.4] 0.26 D[41.2] 0.25 D[41.1] 0.26 D[41.2] 0.25 D[41.1] 0.26 D[41.2] 0.25 D[41.1] T 0.25 A[6.6] 0.23 A[6.3] T 0.24 A[6.2] 0.23 A[9.5] 0.24 A[6.3] 0.23 A[9.7] 0.24 A[6.1] 0.23 A[9.7] SWB R 0.54 C[23.9] 0.99 E[66.7] R 0.70 D[43.2] 0.87 D[48.3] 0.69 D[42.4] 0.87 D[47.8] 0.70 D[43.4] 0.87 D[47.8] VERA - B[11.5] - C[24.6] - B[13.1] - B[19.6] - B[14.2] - C[20.1] - B[14.0] - C[20.4] AM PM 2 U.S. RUTE 1 & USIGAIZED SBR SCH/S DRIVE EB T 0.33 D[26.5] 0.52 E[48.4] T 0.47 E[43.0] 0.54 F[51.6] 0.52 F[50.8] 0.55 F[53.3] 0.47 D[39.6] 0.47 D[43.9] R 0.02 B[10.0] 0.03 B[11.3] R 0.03 B[11.4] 0.04 B[14.6] 0.03 B[10.9] 0.04 B[13.8] 0.07 B[15.3] 0.07 B[15.2] WB TR 0.26 C[20.7] 0.23 C[23.2] TR 0.36 D[29.3] 0.27 D[27.0] 0.39 D[33.1] 0.27 D[27.4] 0.35 C[28.9] 0.26 C[21.3] B TR 0.16 A[0.8] 0.19 A[0.6] TR 0.02 A[0.5] 0.02 A[0.5] 0.02 A[0.5] 0.02 A[0.5] 0.39 A[3.5] 0.45 A[4.1] SB TR 0.17 A[0.8] 0.20 A[1.7] TR 0.02 A[0.5] 0.06 A[1.4] 0.02 A[0.6] 0.05 A[1.4] 0.3 A[2.3] 0.43 A[2.6] R A[0.1] 0.05 A[0.1] 0.07 A[0.2] 0.06 A[0.1] VERA A[7.4] - A[6.4] 3 U.S. RUTE 1 & SIGAIZED SBR RAD/AKAD BEACH AVE EB TR 0.59 D[35.3] 0.51 C[27.4] TR 0.74 E[58.8] 0.77 E[60.8] 0.75 E[60.2] 0.77 E[60.8] 0.74 E[58.8] 0.77 E[60.8] WB TR 0.83 D[51.2] 0.68 C[33.1] TR 0.83 E[59.5] 0.87 E[63.2] 0.83 E[60.6] 0.87 E[63.2] 0.83 E[59.5] 0.87 E[63.2] B T 0.45 B[16.1] 0.66 C[26.4] 0.13 C[20.6] 0.06 C[21.8] 0.11 B[18.3] 0.06 B[18.6] 0.13 C[20.6] 0.06 B[18.6] T 0.48 C[23.8] 0.59 C[27.2] 0.46 C[21.6] 0.57 C[24.5] 0.48 C[23.8] 0.57 C[24.5] R 0.10 A[8.4] 0.11 B[12.0] R 0.08 B[14.8] 0.08 B[16.3] 0.08 B[13.2] 0.08 B[14.0] 0.08 B[14.8] 0.08 B[14.0] SB TR 0.40 B[13.4] 0.61 C[23.2] 0.16 C[23.8] 0.18 B[18.9] 0.15 C[23.7] 0.17 B[14.5] 0.16 C[21.8] 0.17 B[11.5] TR 0.53 C[22.1] 0.62 C[21.6] 0.52 C[24.5] 0.61 B[17.7] 0.53 C[21.0] 0.61 B[16.7] VERA - C[22.9] - C[25.9] - C[32.7] - C[34.0] - C[33.0] - C[31.6] - C[32.3] - C[31.2] TE: EVE F SERVICE RESUTS EXPRESSED AS S [DEAY I SECDS] 3/3/2010 JCE JB 1674

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11 T A B E. 3 SIGA WARRATS AAYSIS (Based n atinal Manual f Unifrm Traffic Cntrl Devices) I T E R S E C T I D A T A C H A R A C T E R I S T I C S MAJR STREET: BST PST RAD (U.S. RUTE 1) umber f anes Fr Mving Traffic By Apprach MIR STREET: S DRIVE Majr Street (Excluding Auxiliary anes) = 2 Minr Street (Including Auxiliary anes) = 1 CATI: RYE, EW YRK Speed 85 % Speed >= 40 mph (Y r )-----> Y DATE: 12/30/2009 Median Raised median 4' r mre in VUME BASIS EXISTIG TRAFFIC VUMES width n majr street (Y r )?------> Ppulatin CDITI... TYPICA WEEKDAY Cmmunity < 10,000 (Y r )------> TIME VUMES WARRAT 1 WARRAT 1 WARRAT 2 WARRAT MET? CDITI A CDITI B Hur Majr Minr Majr Majr Minr Majr Minr Majr Minr Begin Street Street Peds Street Street Street Street Street Street 1A 1B 2 12:00 AM :00 AM :00 AM :00 AM :00 AM :00 AM :00 AM :00 AM :00 AM YES 09:00 AM :00 AM :00 AM :00 PM :00 PM :00 PM :00 PM YES YES 04:00 PM :00 PM :00 PM :00 PM :00 PM :00 PM :00 PM TE : majr peds = highest vlume TTA HURS MEETIG WARRATS n majr street crsswalk TTA HURS EEDED T SATISFY MIIMUM VEHICUAR VUME WARRAT 1A: T SATISFIED -- SIGA ITERRUPTI F CTIUUS TRAFFIC WARRAT 1B: T SATISFIED -- SIGA FUR HUR WARRAT WARRAT 2: T SATISFIED -- SIGA

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29 JH CIS EGIEERS, P.C. TRAFFIC TRASPRTATI EGIEERS ===== 11 BRADHURST AVEUE HAWTHRE,.Y (914) FAX (914) ===== Institute f Transprtatin Engineers Traffic Calming Measures Speed Tables Descriptin: lng raised speed humps with a flat sectin in the middle and ramps n the ends; smetimes cnstructed with brick r ther textured materials n the flat sectin smetimes called flat tp speed humps, trapezidal humps, speed platfrms, raised crsswalks, r raised crssings Applicatins: lcal and cllectr streets main rads thrugh small cmmunities typically lng enugh fr the entire wheelbase f a passenger car t rest n tp wrk well in cmbinatin with textured crsswalks, curb extensins, and curb radius reductins can include a crsswalk Design/Installatin Issues: typically 22 feet in the directin f travel with 6 ft ramps n each end and a 10 ft flat sectin in the middle; ther lengths (32 and 48 feet) reprted in U.S. practice mst cmmn height is between 3 and 4 inches (and reprted as high as 6 inches) ramps are typically 6 feet lng (reprted up t 10 feet lng) and are either parablic r linear careful design is needed fr drainage

30 Page 2 Ptential Impacts: n effect n access speeds are reduced, but usually t a higher crssing speed than at speed humps (typically between 25 and 27 miles per hur) traffic vlumes have been reduced n average by 12 percent depending n alternative rutes available cllisins have been reduced n average by 45 percent n treated streets (nt adjusted fr traffic diversin) reprted t increase pedestrian visibility and likelihd that driver yields t pedestrian Emergency Respnse Issues: typically preferred by fire departments ver 12 t 14-ft speed humps generally less than 3 secnds f delay per hump fr fire trucks Typical Cst: apprximately $2,500 (in 1997 dllars) fr asphalt tables; higher fr brickwrk, stamped asphalt, cncrete ramps and ther enhancements smetimes used at pedestrian crssings ITE - Traffic Calming Measures

31 Speed Impacts (85th Percentile) Calming Measure Average Speed After Calming Average Change in Speed With Calming (mph) Average % Change in Speed with Calming Measures 12' Hump ' Hump ' Table arrwing (Diet) Surce: U.S. Traffic Calming Manual, American Planning Assciatin, ASCE Press