Transportation Engineering Civil Gate Previous Year Questions
Ques 1Gate 2021 Set-2
Relationship between traffic speed and density is described using a negatively sloped straight line. If Vf is the free-flow speed then the speed at which the maximum flow occurs is
a. 0
b. Vf
c. Vf/2
d. Vf/4
c is the correct answer.
Ques 2Gate 2021 Set-1
Spot speeds of vehicles observed at a point on a highway are 40, 55, 60, 65 and 85 km/h. The space mean speed (in km/h, round off to two decimal places) of the observed vehicle is _________.
55.50-0.60 is the correct answer.
Ques 3Gate 2021 Set-1
The shaper of the most commonly designed highway vertical curve is
a. spiral
b. circular (single radius)
c. parabolic
d. circular (multiple radii)
c is the correct answer.
Ques 4Gate 2021 Set-1
A highway designed for 80 km/h speed has a horizontal curve section with radius 250m. If the design lateral friction is assumed to develop fully, the required super elevation is
a. 0.07
b. 0.05
c. 0.02
d. 0.09
b is the correct answer.
Ques 5Gate 2020 Set-2
The traffic starts discharging from an approach at an intersection with the signal turning green. The constant headway considered from the fourth or fifth headway position is referred to as
a. saturation headway
b. effective headway
c. discharge headway
d. intersection headway
a is the correct answer.
Ques 6Gate 2019 Set-1
The maximum number of vehicles observed in any five minute period during the break hour is 160. If the total flow in the peak hour is 1000 vehicles, the five minute peak hour factor (round off to 2 decimal places) is _________.
0.52 is the correct answer.
Ques 7Gate 2017 Set-2
The VPI (vertical point of intersection) is 100 m away (when measured along the horizontal) from the VPC (vertical point of curvature). If the vertical curve is parabolic, the length of the curve (in meters and measured along the horizontal) is _______.
200 is the correct answer.
Ques 8Gate 2017 Set-1
A runway is being constructed in a new airport as per the International Civil Aviation Organization (ICAO) recommendations. The elevation and the airport reference temperature of this airport are 535 m above the mean sea level and 22.65°C, respectively. Consider the effective gradient of runway as 1%. The length of runway required for a design-aircraft under the standard conditions is 2000 m. Within the framework of applying sequential corrections as per the ICAO recommendations, the length of runway corrected for the temperature is
a. 2223 m
b. 2250 m
c. 2500 m
d. 2750 m
c is the correct answer.