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Considering the Questions Why does phase terminate for each scenario? What is process followed by Minimum Green timer? What is process followed by Vehicle Extension timer? What is process followed by Maximum Green timer? What are two conditions for termination of green? 2

Doing the Activity Step 1. Open movie file Step 2. Observe status at beginning of Phase 4 green Step 3. Observe two scenarios for one green indication Step 4. Summarize your observations 3

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Question 1 Why does phase terminate for each scenario? 5

Question 2 What is process followed by Minimum Green timer? 6

Question 2 What is process followed by Minimum Green timer? 7

Question 3 What is process followed by Vehicle Extension timer? 8

Question 3 What is process followed by Vehicle Extension timer? 9

Question 4 What is process followed by Maximum Green timer? 10

Question 4 What is process followed by Maximum Green timer? 11

Question 5 What are two conditions that cause termination of green? 12

Question 5 What are two conditions that cause termination of green? 13

Question 5 What are two conditions that cause termination of green? 14

Question 5 What are two conditions that cause termination of green? 15