1.What is the most important objective of traffic engineering?
a) To consider pedestrians as obstruction
b) To reduce the accidents
c) To increase the traffic
d) To provide a high speed road without any other priority
Explanation: The most important objective is to reduce accidents with considerable speed and the pedestrian should be considered as an element not obstruction.
2. The difference in between the set of front axle and rear axle while negotiating a horizontal curve is called ___________
a) Psychological widening
b) Off tracking
c) Skidding
d) Slipping
Explanation: Whenever a four wheeled vehicle such as bus or truck negotiates the horizontal curve then there is a centrifugal force induced and a difference is formed between front and rear axle which is called as off tracking.
3.A wheel base of 6.5m negotiates a 35m curve find the off tracking?
a) 0.5m
b) 0.6m
c) 0.62m
d) 0.7m
Explanation: Off tracking=l2/2R
=6.5*6.5/70
=0.6m.
4.In a braking test, a vehicle was moving with a speed of 45kmph and was stopped by applying brakes, the skid marks were 10.0m in length. Determine the skid resistance.
a) 0.78m
b) 0.69m
c) 0.71m
d) 0.72m
Explanation: speed=45/3.6
=12.5m/sec
Braking distance = u2/2gf
10=12.5*12.5/ (2*9.81*f)
F=0.78m.
5. The brake efficiency in the braking test is assumed as ___________
a) 95%
b) 96%
c) 99%
d) 100%
Explanation: In the braking test the wheels are assumed to be fully locked and the efficiency is assumed as 100%.
6. Gross weight, axle and wheel loads of vehicle govern the ___________
a) Width of pavement
b) Thickness of pavement
c) Structural design of pavement and cross drainage structures
d) Traffic junctions
Explanation: The weight of the vehicle and wheel loads usually recommended by IRC is used for the design of pavements and cross drainage structures.
7. How many types of factors affect traffic characteristics?
a) One
b) Two
c) Three
d) Four
Explanation: The factors affecting traffic characteristics are physical, mental, environmental and psychological.
8. The hearing, visibility and reaction time are covered in which type of factors?
a) Physical
b) Mental
c) Psychological
d) Environmental
Explanation: The visibility, hearing and reaction time are related to the physical conditions of the road, they are covered under physical type.
9. An intelligent driver who consumed alcohol will have a chance of ___________
a) Increased alertness
b) Increase in reaction time
c) Increase in speed
d) Increase in judgment
Explanation: A person who is extremely intelligent if he consumes alcohol, then there is a chance of losing his control over mind temporarily and will have an increase in reaction time.
10. The pollutant mostly released by automobiles is ___________
a) CO
b) CO2
c) O3
d) CH4
Explanation: The pollutant mostly released by automobiles is CO, when it is mixed with haemoglobin it forms carboxyhaemoglobin which is very dangerous for health.