The Mechanical Widening of the Curve is Given by
By BYJU'S Exam Prep
Updated on: September 25th, 2023
The mechanical widening of the curve is given by-
- Wm=nl²/2R
- Wm=nl/2R
- Wm=nR²/2l
- None of the above
Table of content
Answer: A. Wm=nl²/2R
The mechanical widening of the curve is given by Wm=nl²/2R.
Solution
Extrawidening is the extra width of road provided on the horizontal curve
Extrawidening is provided to-
- Avoid the offtracking of the vehicle
- To account lateral skidding
- To confront the psychological tendency of the driver
- To increase the visibility at curves
Types of Extra Widening-
- Mechanical Widening: The Mechanical Widening of the Curve is given by Wm=nl²/2R
- Psycological Widening: WP=V/9.5 √R
Total Extra Widening
We=Wm + WP
We=nl²/2R + V/9.5 √R
Where,
We – Total Extra Widening
Wm– Mechanical Extra Widening
WP – Psychological Extra Widening
n – Number of lanes
l – Length of wheel base
R – Radius of the curve
V – Speed in Kmph