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2 cards from this section. Quick, good the night before a test.
Define cycle time in traffic signal design.
Think about the signal's operation duration.
What does headway refer to?
Focus on the timing of vehicles in a sequence.
What is cycle time in traffic signals?
Think of the overall time taken for all traffic lights.
True or False: Headway is the same for all vehicles at an intersection.
Consider varying distances and starting times.
Given a saturation headway of 1.5 seconds, how many vehicles can pass in an hour if the traffic light remains green? Assume the green time is uninterrupted.
Consider the relationship between headway in seconds and flow in hours.
A traffic signal has a cycle length of 80 seconds with a green time of 35 seconds, yellow time of 5 seconds, and total lost time of 6 seconds. Calculate the effective green time.
Add green and yellow times, then deduct lost times.
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