數據分析

Van Length 4 m

Lane width 3.7m

Van 0-60 mph 7.5 second, therefore calculate Van Acceleration : 3.56 (m/s**2)

With equation of

x = v₀t + ½at²

Where:
x = displacement
v₀ = initial velocity
a = acceleration
t = time

1.The time of the Van pass the first lane fully (3.7+4m) is

t=2.079

Bus travels 73 m (speed of 80 mph)

 

2.The time of the Van pass the first lane fully (7.4+4m) is

t=      3.56

Bus travels 90 m (speed of 80 mph)

 

從數上看，Van起步進入主路時候，Bus裏路口已經非常近了

如果是第一個lane撞到中部，那距離是非常非常近了，比如30m