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Question
The free mean speed on a roadway is found to be 80 kmphs. Under stopped condition, the average spacing between the vehicles is 6.9 m. What is the capacity flow?
A.
5800 Vehicles/hour (per lane)
B.
7200 Vehicles/hour (per lane)
C.
1450 Vehicles/hour (per lane)
D.
2900 Vehicles/hour (per lane)
Answer ( Option D)

2900 Vehicles/hour (per lane)

Solution

Free mean speed, Vf = 80 km/hr
  Jam density,
    
(As one vehicle under stopped condition occupies 6.9 m)
Capacity flow (maximum traffic flow),

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