GATE CE 2024 Set 2 — Question 63
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Transportation Engineering → Cross-Section & Sight Distance → Stopping Sight Distance
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Question
A vertical summit curve on a freight corridor is formed at the intersection of two gradients, and .Assume the following:
Only large-sized trucks are allowed on this corridor
Design speed
Eye height of truck drivers above the road surface
Height of object above the road surface for which trucks need to stop
Total reaction time of the truck drivers
Coefficient of longitudinal friction of the road
Stopping sight distance gets compensated on the gradientThe design length of the summit curve (in meters) to accommodate the stopping sight distance is __________ (rounded off to decimal places).
Only large-sized trucks are allowed on this corridor
Design speed
Eye height of truck drivers above the road surface
Height of object above the road surface for which trucks need to stop
Total reaction time of the truck drivers
Coefficient of longitudinal friction of the road
Stopping sight distance gets compensated on the gradientThe design length of the summit curve (in meters) to accommodate the stopping sight distance is __________ (rounded off to decimal places).
Correct answer
117 to 120
Solution
1.Deviation Angle ():
, 2.Stopping Sight Distance ():
Given , , :3.Length of Summit Curve ():
Assume . The formula for length is:Where and :
Since , our assumption is correct.
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