If L is the length of a moving vehicle and R is the radius of curve, the extra mechanical width b to be provided on horizontal curves,

If L is the length of a moving vehicle and R is the radius of curve, t

1.	If L is the length of a moving vehicle and R is the radius of curve, the extra mechanical width b to be provided on horizontal curves,
A.	L/R
B.	L/2R
C.	L²/2R
D.	L³/2R
Answer» D. L³/2R