A summit curve is provided on a road profile where:
An ascending gradient meets a falling one
In highway engineering, vertical curves are used to smoothen the change in gradient. A summit curve (crest curve) is provided where an ascending gradient meets a falling gradient — the road rises and then descends, creating a hill or crest. The design ensures adequate stopping sight distance (SSD) over the crest. In contrast, a valley curve is where a falling gradient meets a rising gradient.
Similar Questions
In geometric design of highways, while on rolling terrain, design speeds are generally:
The friction factor used in geometric design of highways is provided by the:
Important Questions from Highway Geometric Design
Calculate the design rate of super elevation (%) on a highway in a plain terrain, if design speed of the highway is 80 kmph and radius of the curve is 400m.
Which of the following is the main function of “submerged” kerbs in rural roads?
Which of the following statements are correct, with reference to the Road Formation width?
i. It is the bottom width of the embankment.
ii. It is the bottom width of the cutting.
iii. It is inclusive of the width of the shoulders.
iv. It is inclusive of the width of side drains.
As per IRC, which of the following is NOT a recommended characteristic of the road shoulder?
Which of the following gradients will have the maximum value?
