Question

The extra widening required for a National highway curve in a plain terrain with a radius of 220 m and 7 m wheel base is:

• A. 0.62 m
• B. 0.72 m
• C. 0.82 m
• D. 0.92 m

Hint:

Mechanical widening ($n l^2 / 2R$) depends only on vehicle and road geometry, while psychological widening ($V / 9.5\sqrt{R}$) depends on the driver's comfort at high speeds.

Answer 1

The Correct Option is D