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CIV2282 - Transport and traffic engineering - S1 2026
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Which of the following is a TRUE statement?
A right-turn movement at a signalised intersection has a maximum arrival rate of 300 vehicles per hour, and the saturation (i.e. maximum) flow of this right-turn movement is designed to be 600 vehicles per hour. Assume D/D/1 queuing model and the cycle starts with red for 60 seconds. The green time is designed so that there are only 2 vehicles in the queue at the end of the cycle.
Which option below best represents the green time?
Minor stream vehicles at a stop-sign intersection need a five-second headway in the major stream to cross the road. The arrival traffic flow from the minor road is 150 vehicles per hour.
Assuming a negative exponential distribution of the headway, which option below best describes the probability of vehicles on the minor road to cross the main traffic stream?
Referring to Question 11 above, which option below best represents the total delay at the end of the cycle?
A new computer system is put in place at a toll booth. The system comes online at 9.00 am (with no vehicle in the queue), and vehicles arrive at a rate of λ( ) in veh/min and in min). Due to a computer systems failure, cars are not serviced until 9:15 am. Between 9:15 and 9:30 they are serviced at 10 vehicles per minute. After 9:30 am they are serviced at 25 vehicles per minute.
Assuming D/D/1 queueing, which option below best describes the maximum queue length?
Vehicles at a stop sign require a 5-second headway to cross the main street. The traffic flow on the main street is 496 vehicles per hour. Assuming the headway follows a shifted negative exponential distribution with the minimum headway of 2.9 seconds.
Which option below best describes the probability that vehicles at the stop sign can safely cross the main street (rounded to two decimal places)?
A linear regression fit to real traffic data speed (v) and density (k) data has the following relationship: v=120 – 1.9k, where v is measured in km/h and k is measured in veh/km. Which option below represents most accurately the free-flow speed and maximum flow?
Referring to Question 11 above, which option below best describes the maximum queue length within the cycle?
Which option below is not correct:
It is estimated that the probability that an intersection will experience at least 1 accident per week is 77.9%. Assuming a Poisson distribution, which option below best describes the weekly average accident rate (rounded to two decimal places)?