Traffic Flow Rate from Density and Speed
Easytraffic flowdensity
A traffic stream has density 30 vehicles/km and space-mean speed 60 km/h. What is its flow rate?
- A500 vehicles/h
- B1,200 vehicles/h
- C1,800 vehicles/h
- D3,600 vehicles/h
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Answer: C. 1,800 vehicles/h
The fundamental traffic relationship is q = ku. Thus q = (30 vehicles/km)(60 km/h) = 1,800 vehicles/h.
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