1. What is the mid-ordinate of a curve with a radius of curvature 2m and angle of deflection = 60°?
a) 0.342
b) 0.268
c) 0.112
d) 0.245
Explanation: M = R(1-cos θ/2)
where, M = mid-ordinate
R = radius of curvature
θ = angle of deflection
M = R(1-cos θ/2) = 2(1-cos60/2) = 0.268 m.
2. The sight distance in a sag vertical curve is limited by which factor given below during night time driving condition?
a) Design speed
b) Driver’s height
c) Headlamp range
d) Ruling speed
Explanation: The sight distance in a sag vertical curve is limited by Headlamp range during night time driving condition. Sight distance is the length visible to the driver while travelling on the road.
3. Broken-back grade lines should be provided where ever practicable.
a) True
b) False
Explanation: “Broken-back grade lines should be provided where ever practicable” is a false statement. Broken-back grade lines should be avoided where ever practicable. Broken-back grade lines are two consecutive vertical curves in the same orientation parted by a short tangent section.
4. Which of the following is not a feature of cross-section elements of a highway?
a) Shoulders
b) Side slopes
c) Curbs
d) Signal
Explanation: Signal is not a feature of cross-section elements of a highway. Shoulders, side slopes, curbs, guardrails, and drainage channels are some of the features of a cross-sectional element of a highway.
5. The number of vehicles crossing a section of road in a unit time at any selected period is called ____________
a) Traffic volume study
b) Traffic density study
c) Traffic mass study
d) Traffic characteristic study
Explanation: The number of vehicles crossing a section of road in a unit time at any selected period is called Traffic volume study. Its unit is vehicles/hr or vehicles/day.
6.Speed studies are conducted for what primary purpose?
a) Traffic census
b) Safety
c) Quality of service
d) Planning
Explanation: Speed studies are conducted primarily for safety purpose. Speed characteristics are needed to be assessed from time to time for safety concerns. New speed limits are set if the current one is not viable.
7. Demand-forecasting model is based on which traffic studies?
a) Speed studies
b) Traffic volume study
c) Travel time studies
d) Accident studies
Explanation: Demand-forecasting model is based on Travel time studies. Travel time along sections of highways comprises of a major measure of the quality of service to users.
8. Total parking demand is determined by which traffic study?
a) Accident studies
b) Traffic volume study
c) Travel time studies
d) Parking studies
Explanation: Total parking demand is determined by Parking studies type of traffic study. Several counting methodologies are used to determine the parking need of people. Interview studies are done to see how parking facilities are used.
9. Which traffic study records the existing truck loading facilities and transit system?
a) Goods movement and Transit studies
b) Parking studies
c) Traffic volume studies
d) Travel time studies
Explanation: Goods movement and Transit studies record the existing truck loading facilities and transit system. It is a significant factor of congestion, proper planning, and operation policies.
10. Which traffic study uses traffic models to analyze traffic?
a) Traffic volume studies
b) Calibration studies
c) Parking studies
d) Accident studies
Explanation: Calibration studies use traffic models to analyze traffic. Studies are done to calibrate key values in models to guarantee that they depict the conditions in real-life traffic.