[dominotw]

that would make sense if roads are built for 5 trips of a car than 1 trip of truck. ( Because car is travelling longer with that one gallon of gallon.)

Is that true though that X cars travelling a mile of road would do less damage than 1 truck traveling on that same road?

[mantas]

The problem is big load, even if for a short amount of time. Just like for bridges. If a bridge can sustain a car a minute, that doesn't necessarily mean that it could sustain a truck once...