What is the bridge weight formula concerned with?
a.The maximum weight a vehicle can carry across any bridge
b.The maximum weight allowed on a group of axles based on the number of axles and the distance between them
c.The total weight of the bridge structure
d.The distance a vehicle must maintain from other vehicles on a bridge
Explanation
The bridge weight formula determines the maximum weight allowed on a group of axles based on the number of axles and the distance between them. It is designed to prevent excessive stress on bridges and road surfaces.