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Unformatted text preview: Review 1. What is the purpose of the all-red clearance interval? What important tradeoff is represented in its use? 2. What is the purpose of the lead pedestrian interval? How does it work? Under what circumstances is it used? 3. What is a phase? How is it related to the cycle length? 4. Sketch the saturation flow model of intersection traffic flow; include start-up and clearance lost times, saturation flow and effective green. 5. What is the conceptual rationale for the determination of the effective green?...
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- Spring '02
- Environmental Engineering