A single-lane highway has a traffic density of 40 vehicles km. If the time-mean speed and space-mean speed are 40 kmph and 30 kmph, respectively, the average headway (in seconds) between the vehicles is
The lane configuration with lane volumes in vehicles per hour of a four-arm signalized intersection is shown in the figure. There are only two phases: the first phase is for the East-West and the West-East through movements, and the second phase is for the North-South and South-North through movements. There are no turning movements. Assume that the saturation flow is 1800 vehicles per hour per lane for each lane and the total lost time for the first and the second phases together is 9 seconds.
The optimum cycle length (in second), as per the Webster's method, is __________. (round off to the nearest integer).
For a traffic stream, V is the space mean speed, k is the density, q is the flow. Vf is the free flow speed, and kf is the jam density. Assume that the speed decreases linearly with density.
Which of the following relations is/are correct?
Consider the four points P, Q, R and S shown in the Greenshields fundamental speed-flow diagram. Denote their corresponding traffic densities by kP, kQ, kR and kS, respectively. The correct order of these densities is :
