4. For the traffic characteristics and signal phasing system shown below, determine suitable phase lengths for the inter

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4 For The Traffic Characteristics And Signal Phasing System Shown Below Determine Suitable Phase Lengths For The Inter 1 (76.49 KiB) Viewed 39 times

4. For the traffic characteristics and signal phasing system shown below, determine suitable phase lengths for the intersection using the Webster method. For cach approach, assume one left turn lane, one through lane, and one through-right lane. East 162 559 167 West 135 514 177 North South Left Turn 135 71 Through Movement 415 370 Right Turn 138 131 Assume the following information: PHF = 0.95 Left-turn factor = 14 Right-turn factor= 1.0 PCE for buses and trucks 1.6 Truck percentage - 3% on all approaches. Total lost time in each phase = 3.5 seconds and Yellow interval in each phase = 3.0 seconds Assume the following saturation flow: - Through and right-turn lanes: 2000 pc/h/In Lell-turn lanes: 1500 pc/h/In Assume a 4-phase cycle as follows: Phase 1: E-W through/right Phase 2: E-W left Phase 3: N-S through/right Phase 4: N-S left Due Date: February 28, 2022 at 1:00 pm Table 2.4.2: Design Dimensions for commercial Vehicles Single-unit trucks Tractors- Semitrailers Doubles Light Medium Heavy WB-19 WB-20 A-train B-train 6.4 10.0 11.5 20.7 22.7 24.5 25.0 0.8 0.8 0.8 0.8 0.8 0.8 0.8 2.2 2.7 2.3 1.7 3.3 1.5 1.3 3.4 6.5 8.4 6.2 6.2 5.1 6.1 Length (m) Front Overhang (m) Rear Overhang (m) WB1 (m) WB2 (m) WB3 (m) WB4 (m) Width (m) - - 12.0 12.4 6.9 9.0 - 6.9 7.0 0.8 - - 3.3 2.6 2.6 2.6 2.6 2.6 2.6 2.6 Minimum turning radius - see Table 2.4.4 Notes: 1. These dimensions are subject to change across provincial, national and international boundaries. Designers should check appropriate regulations for the intended facility, as well as the trucking Industry, to ensure dimensions reflect the current regulatory environment. 2. Includes 1.2 m from the rear effective axle to the hitch point and 2.1 m from the hitch point to m the lead effective axle of the following unit Maximum dimension allowed without permit. Statistical data not available. . 3