TRANSPORTATION ENGINEERING-TRAFFIC SIGNALS"Recent analysis at an approach to pre-time signalized intersection indicate that the volume-to-capacity ratio (v/c) is 0.8, htat saturation flow rate (s) is 1600 vehicles/hour, and the effective green time is 50 seconds. If the average delay, assuming D/D/1 is 11.25 seconds per vehicle, determine the arrival flow rate (vehicles/hour) and the cycle length.

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Asked Nov 27, 2019
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TRANSPORTATION ENGINEERING-TRAFFIC SIGNALS"

Recent analysis at an approach to pre-time signalized intersection indicate that the volume-to-capacity ratio (v/c) is 0.8, htat saturation flow rate (s) is 1600 vehicles/hour, and the effective green time is 50 seconds. If the average delay, assuming D/D/1 is 11.25 seconds per vehicle, determine the arrival flow rate (vehicles/hour) and the cycle length.

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Expert Answer

Step 1

Given data:

The volume to capacity ratio (v/c) is 0.8.

The saturate flow rate (s) is 1600 vehicles/hour.

The effective green time (gi) is 50 seconds.

The average delay is 11.25 seconds per vehicle.

Step 2

The departure rate is given by,

1V
Departure rate =-xs
c
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1V Departure rate =-xs c

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Step 3

Plugging val...

Departure rate 0.8 x 1 600 vehicle/hour
1 vehicle/sec
3600 vehicle/hour
1280 vehicle/hourx-
0.38 vehicle/sec
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Departure rate 0.8 x 1 600 vehicle/hour 1 vehicle/sec 3600 vehicle/hour 1280 vehicle/hourx- 0.38 vehicle/sec

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