Design rate of super elevation for horizontal highway curve

Design rate of super elevation for horizontal highway curve of radius 450 m for a mixed traffic condition, having a speed of 125 km/hour is

For mixed traffic,

e =	(0.75V)²	; V in m / s
	gR

Design speed = 125 kmph

= 125 ×	5	= 34.7 m /s
	18

e =	(0.7V)²
	gR

=	(0.75 × 34.7)²	= 0.154
	9.81 × 450