[UJRonald]

It depends on PSI that the trucks have you are allowed an amount per axle* and the amount of tread on that axle 500 pounds per inch of tread with. So weight increase that does not contribute more to ground pressure is pretty much a non event untill thigs with an absolute value like bridges etc.

Most 4 axle trucks (1 front 2 rear with a dropdown) and 4 rear axle trailers are running around 110k pounds already.

Roads, bridges and tunnels are dynamic structures we have been maintaining them poorly since they were created because maintaining stuff is not sexy and will not get people re-elected so we have been letting it all go to pot for about nearly a century now (most dams are 100 years old).

With more people living dependent on cities AKA trucking centers and the increase of fuel costs combigned with the chokehold the government puts on the industry with rules and regulations. The logical answer would be to increase capacity per truck. because you can't increase hours per day driving or physical size due to existing rules. Or you could rely on governement subsidy to be profitable like other countries. The trucking industry is on the decline like every single other aspect of this country.

What to do Air drop food into cities?? Nationalize trucking Expect people to work for free? Have Drivers drive longer than 10 hours per day? Something has to give.

I think that the plan is the best compromise allowed.


http://ops.fhwa.dot.gov/freight/sw/overview/index.htm

* federal interstate laws for weights may be more restrictive on a state by state basis and on non interstate roads.

Federal commercial vehicle maximum standards on the Interstate Highway System are:
Single Axle:20,000 poundsTandem Axle:34,000 poundsGross Vehicle Weight:80,000 pounds