31.7.1 - Flow-density curve
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Practice Questions
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What happens to the flow when there is zero density?
💡 Hint: Think about what it means for a road to have no vehicles.
Define jam density.
💡 Hint: Consider the amount of cars on a road when traffic comes to a halt.
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Interactive Quizzes
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What happens to flow when density is zero?
💡 Hint: Reflect on the definition of flow.
At what point does jam density occur?
💡 Hint: Consider conditions under which movement is halted.
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Challenge Problems
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Consider a road where the density increases from 0 to 50 vehicles/km over a span of time. Graph the flow-density curve and identify the peak flow rate based on your assumptions.
💡 Hint: Determine how you would expect flow to behave as density increases.
Analyze a scenario where adding an additional lane doubles the vehicle flow. What implications does this have for the flow-density relationship?
💡 Hint: Consider how density and flow interact when infrastructure improvements are made.
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