## Highway Engineering Questions and Answers - Traffic Regulation and Control Part-1

1. The minimum space headway increases with __________
a) Increase in length of vehicle
b) Increase in width of vehicle
c) Increase in weight of vehicle
d) Increase in width of pavement

Explanation: The minimum space headway increases with the length of the vehicle, if the length is more then the headway will be more

2. Which of the following equation is correct?
a) Q=KV
b) K=qv
c) K=qv2
d) V=kq

Explanation: K is the density of vehicles/km and V is the velocity in kmph Q is the number of vehicles.

3. The maximum jam density occurs at __________
a) Ki
b) Ki/2
c) Ki/3
d) Ki/4

Explanation: The maximum jam density occurs at Ki=Ki/2 and Vs = Vsf/2.

4. If the jam density is 145vehicles/km, and velocity is 60kph then the capacity flow is __________
a) 2175
b) 2200
c) 2375
d) 2500

Explanation: Capacity flow=145*60/4
=2175 vehicles per lane.

5.The equivalency factor for the car recommended by IRC is?
a) 0.5
b) 1.0
c) 1.5
d) 2.0

Explanation: The equivalency factor for a car is 1.0, and it increases with the difficulty for the driving of vehicle for hand cart it is 2.0.

6. The maximum theoretical capacity is __________
a) 1000V/S
b) 1000S/V
c) 1000S
d) 1000V

Explanation: The maximum theoretical capacity is 1000V/S, where V is the velocity in kmph and S is the SSD.

7. What is the first phase of traffic regulation?
a) Driver controls
b) Vehicle controls
c) Traffic flow regulations
d) General controls

Explanation: The first phase of traffic regulation is driver controls followed by vehicle control, traffic flow regulation and general control.

8. The various regulations imposed through the traffic control devices do not include __________
a) Clear visibility
b) Easy recognition
c) Sufficient time for driver
d) Traffic population

Explanation: The various regulations imposed through the traffic control devices do not include as they are not related to control of traffic.

9. The minimum age for attaining a license for a geared vehicle is?
a) 16 years
b) 18 years
c) 20 years
d) 21 years