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(civl362)[2008](f)Quiz11-Solution~PPSpider^_10079.pdf
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CIVL 362 Transportation System Operations
Tutorial Quiz 11 (Suggested Solution)
Name: Student ID: Week 13, 26 Nov 2008
1) Recent computation at an approach of a pretimed signalized intersection indicates that the average vehicle delay per cycle calculated by Allsops expression is 16.6 seconds. The volume to capacity ratio is 0.8, the saturation flow is 1600 veh/hr, and the effective green time is 50 seconds. If the uniform delay, i.e. the average vehicle delay per cycle assumed D/D/1 regime, is 11.25 sec/veh, determine the arrival flow (in veh/hr) and the cycle length.
Given: Allsops Formula


d = 16.6s, X = 0.8, S = 1600 veh/s, g = 50s



Solving, v = 0.222 veh/sec = 800 veh/hr






Alternative method:


Thus, Arrival Rate = 800 veh/hr and the Cycle Length is 80s
2) See solutions of Assignment 4