Behavior of Reinforced Retaining Walls with Different Reinforcement Spacing during Vehicle Collisions

Table 1

Relationship between design and collision velocities.

Type	The range of design velocity in road (km/h)	Used design velocity (km/h)	Collision velocity (km/h)
A	60~120	100	60
B	60	60	40
C	20~50	50	35
D	—	100	80