1. Which traffic study studies the effectiveness of various traffic control devices?
a) Calibration studies
b) Observation studies
c) Parking studies
d) Traffic volume studies
Explanation: Observation studies the effectiveness of various traffic control devices. It assesses the design of the control devices and studies how it is implemented. It helps evaluate control measures.
2. The time lost by traffic due to traffic friction and traffic control devices is called _____
a) Delay
b) Green time
c) Red time
d) Setback time
Explanation: The time lost by traffic due to traffic friction and traffic control devices is called delay. Delay is the added time spent by the drivers against their presumption.
3. The delay caused by the intervention by other components of traffic is called __________
a) Operational delay
b) Fixed delay
c) Stopped delay
d) Approach delay
Explanation: The delay caused by the intervention by other components of traffic is called Operational delay. Some examples of this delay are, time lost due to parking manoeuvres, pedestrians, and turning movement.
4. Traffic islands are used to increase the length of the crossing.
a) True
b) False
Explanation: Traffic islands are used to decrease the length of the crossing. This is done so for the safe crossing of pedestrians and easy flow of traffic.
5. What is the difference between the actual time required to cross a section of a road and the time taken corresponding to the average speed of traffic under free-flow condition called?
a) Travel time delay
b) Congestion delay
c) Stopped Delay
d) Approach Delay
Explanation: The difference between the actual time required to cross a section of road and the time taken corresponding to the average speed of traffic under free-flow condition is called Travel time delay. Travel time delay comprises of acceleration delay, deceleration delay, and stopped delay.
6. The total time of travel, including stop and delay, to travel from one point of a section to another under existing traffic condition is called __________
a) Operational delay
b) Travel time
c) Fixed delay
d) Approach delay
Explanation: The total time of travel, including stop and delay, to travel from one point of a section to another under existing traffic condition is called Travel time. There are various techniques to determine travel time. Some of them are floating car method, average speed method, and elevated observation method.
7. What is the purpose of a Travel Time and Delay Study?
a) To assess the quality of traffic movement
b) To assess the time taken to travel by various vehicles
c) To evaluate the traffic stream
d) For survey data
Explanation: To assess the quality of traffic movement along a roadway and to determine the traffic delays, using a test vehicle, is the purpose of a Travel Time and Delay Study.
8. In which of the following cases Travel Time and Delay Study is not used?
a) To compare operational conditions before and after enhancements have been made
b) To compare operational inadequacies in each project
c) To monitor LOS of road
d) To compare the design width of the road in each condition
Explanation: Travel Time and Delay Study is used to compare operational conditions before and after enhancements have been made, to compare operational inadequacies in each project, and to monitor LOS of road.
9. Which of the following is not a method for obtaining travel time and delay studies?
a) Floating car method
b) Average speed method
c) Interview method
d) Spot speed method
Explanation: Spot speed method is not a method for obtaining travel time and delay studies. It is a method which helps us to determine the geometry of superelevation and horizontal and vertical curves.
10. In which of the following methods given below does the observer travels and makes a round trip along a test section in a traffic stream?
a) Floating car method
b) Average speed method
c) Spot speed method
d) License plate method
Explanation: In Average speed method the observer travels and makes a round trip along a test section in a traffic stream. In this method, the driver drives the test car at an average speed of the test route and the time taken to complete that distance is noted.