41.3.1 - Two phase signals
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Practice Questions
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Define what a phase is in traffic signal design.
💡 Hint: Think about what happens during a traffic signal change.
What is the significance of grouping non-conflicting flows?
💡 Hint: Consider the relationship between efficiency and safety.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does a phase in a traffic signal refer to?
💡 Hint: Consider what happens when lights change.
Two-phase signals are most effective when:
💡 Hint: Think about the flow of cars.
1 more question available
Challenge Problems
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Design a two-phase signal for an intersection where there are two through lanes, one left-turn lane and one right-turn lane. Discuss how you would group the flows and any potential conflicts.
💡 Hint: Consider how traffic flows intersect and potential accidents.
Evaluate a scenario where high left-turn traffic is present at a two-phase signal. What adjustments would you recommend?
💡 Hint: Think about how turning movements affect all vehicles at the intersection.
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