The mechanical extra widening required for 10.5 m wide pavement on a horizontal curve of radius R meter is given by
where, I is the length of wheel base of the vehicle in meters.
1
\(\frac{\text{l}^{2}}{2\text{R}}\)
2
\(\frac{3\text{l}^{2}}{2\text{R}}\)
3
\(\frac{\text{l}^{2}}{\text{R}}\)
4
\(\frac{2\text{l}^{2}}{3\text{R}}\)