Traffic Engineering

A one-way, single lane road has traffic that consists of 30% trucks and 70% cars. The speed of trucks (in km/h) is a uniform random variable on the interval (30, 60), and the speed of cars (in km/h) is a uniform random v...

All the vehicles that come during a particular peak hour come during a 10-minute period within this hour. The 15 -minute peak hour factor for this peak hour is

The free flow speed of a highway is 100 km/h and its capacity is 4000 vehicle/h. Assume speed density relation is linear. For a traffic volume of 2000 vehicle/h, choose all the possible speeds (in km/h) from the options...

The free mean speed is 60 km/hr on a given road. The average space headway at jam density on this road is 8 m. For a linear speed-density relationship, the maximum flow (in veh/hr/lane) expected on the road is

A two-phase signalized intersection is designed with a cycle time of 100 s. The amber and red times for each phase are 4 s and 50 s, respectively. If the total lost time per phase due to start-up and clearance is 2 s, th...

The vehicle count obtained in every 10 minute interval of a traffic volume survey done in peak one hour is given below. Time Interval (in minutes) Vehicle Count 0 - 10 10 10 - 20 11 20 - 30 12 30 - 40 15 40 - 50 13 50 -...

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

For a traffic stream, V is the space mean speed, k is the density, q is the flow. V f is the free flow speed, and k f is the jam density. Assume that the speed decreases linearly with density. Which of the following rela...

At a traffic intersection, cars and buses arrive randomly according to independent Poisson processes at an average rate of 4 vehicles per hour and 2 vehicles per hour, respectively. The probability of observing at least...

The spot speeds (expressed in km/hr) observed at a road section are $$66, 62, 45, 79, 32, 51, 56, 60, 53$$ and $$49.$$ The median speed (expressed in km/hr) is __________.