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GATE 2016 CE (CE1) – Question 32

Traffic Engineering and Transportation Planning · Fundamental relationships of traffic flow · 1 mark · Numerical answer

In a one-lane one-way homogeneous traffic stream, the observed average headway is 3.0 s. The flow (expressed in vehicles/hr) in this traffic stream is________

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Correct answer: 1199 to 1201

Explanation

For a uniform stream, flow is the reciprocal of mean time headway. There are3600 seconds per hour, so q=3600/3=**1200vehicles/hour**. This conversion uses time headway; a distance headway would additionally require speed.