41.5.2 - Lane capacity
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Practice Questions
Test your understanding with targeted questions
What is lane capacity?
💡 Hint: Think about how vehicles are counted.
Define effective green time.
💡 Hint: Consider what happens when the signal changes.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the formula to calculate lane capacity?
💡 Hint: Think about how to find capacity.
True or False: Effective green time includes lost time.
💡 Hint: Consider what effective means.
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Challenge Problems
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A city intersection has a saturation flow rate of 1750 vehicles/hour. During peak hours, the cycle time is 70 seconds with an effective green time of 40 seconds. Calculate the lane capacity and discuss its implications on intersection design.
💡 Hint: Follow the capacity formula to derive your answer.
In a new traffic signal design, loss time during signal change is projected to be 5 seconds. How would you account for this in your lane capacity calculation if the green time remains unchanged?
💡 Hint: Always consider how lost time affects total available time for vehicles.
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