some Determine the motor vehicle level of service on each lane group, on each approach, and for the overall intersection described below. Assume d2 = 2s on each approach and no initial queue. (Note approaches are split between two phases; you can still calculate the approach delay using the individual lane groups, regardless of phase.). Phase A Phase B Phase C Table 2 Designed Hourly Volume Table 3 Saturation Flows Table 4 Signal Timing Phase A Phase A L L Cycle Length (s) 95 East 353 East 1,700 Effective Green West 294 West 1,700 Time (s) Phase B Phase B T+R T+R Phase A 20 East 1,294 East 3,700 West 1,353 West 3,700 Phase B 37 Phase C Phase C L T+R L T+R Phase C 26 North 106 459 North 1,700 1,800 97 South 82 435 South 1,700 1,800 Average control delay (d) = d₁ + d2 + d3 d₁: Uniform control delay per vehicle, expected delay for uniform arrivals in unsaturated conditions. d2: Incremental delay, accounts for additional delay due to randomness of arrivals d3: Initial queue delay, accounts for delay to all vehicles in analysis period d2 = 2s,d3=0s

some Determine the motor vehicle level of service on each lane group, on each approach, and for the overall intersection described below. Assume d2 = 2s on each approach and no initial queue. (Note approaches are split between two phases; you can still calculate the approach delay using the individual lane groups, regardless of phase.). Phase A Phase B Phase C Table 2 Designed Hourly Volume Table 3 Saturation Flows Table 4 Signal Timing Phase A Phase A L L Cycle Length (s) 95 East 353 East 1,700 Effective Green West 294 West 1,700 Time (s) Phase B Phase B T+R T+R Phase A 20 East 1,294 East 3,700 West 1,353 West 3,700 Phase B 37 Phase C Phase C L T+R L T+R Phase C 26 North 106 459 North 1,700 1,800 97 South 82 435 South 1,700 1,800 Average control delay (d) = d₁ + d2 + d3 d₁: Uniform control delay per vehicle, expected delay for uniform arrivals in unsaturated conditions. d2: Incremental delay, accounts for additional delay due to randomness of arrivals d3: Initial queue delay, accounts for delay to all vehicles in analysis period d2 = 2s,d3=0s

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter8: Intersection Control

Section: Chapter Questions

Problem 8P

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