Answer:
SSD = 565.54 ft
Explanation:
Given data:
driver speed = 60 mph
clear distance available to stop the truck on emergency can be calculated by using stopping sight distance
SSD = Lag distance + breaking distance
let take comfortable acceleration rate as a = 11.2 ft/s^2
g =32.2 ft/s^2
a = fg
speed is given as 60 mph
we know that 1 mile 5290 ft
i hr = 3600 sec
therefore v = 88 ft./s
from standard assumption time to reaction is taken as 2.5 sec
so
SSD = 565.54 ft
Answer:
0.2108
Explanation:
WA = 0.245 x 0.045 = 0.011025 m2. Then, LER = 0.011025/0.0523 = 0.2108.
Answer:
Explanation: 1995 would be correct.