102 inches
The tractor weighs 20,000 pounds, the trailer weighs whatever it weighs, and the maximum weight of a loaded tractor trailer with one trailer is 80,000 pounds.
60 ft
You always want to ensure that you are far enough back that you can see the mirrors of that tractor - this also ensures that the driver can see you.
102 inch maximum width without requiring an oversize permit.
For a standard five axel tractor trailer, the max is 80,000 lbs
Average weight of a road tractor and 53' dry van trailer is around 38,000 lbs. The Loaded weight is 80,000 lbs which is the legal maximum weight for a standard 5 axle tractor trailer.
The weight that can be carried in a semi trailer legally varies. It depends on how much the tractor pulling the trailer weighs. The maximum weight of the total unit, truck and trailer is limited at 80,000 lbs without getting special permits. For a heavy tractor, the trailer would have to be loaded with less weight than a trailer pulled with a light tractor. It's not uncommon for a trailer to comfortably carry 45,000 with most over the road tractors. Some trailers can be loaded heavier as long as the don't exceed the maximum. Also, I should mention, axle weight will affect how much can be loaded also. only 34,000 can be loaded on the trailer and tractor rear axles. This means that the weight on the trailers must be properly distributed.
tractor trailer
I would have to say no. I have a tractor that is insured the only thing that is insured is just that the tractor (fire theft etc). Although You can get your trailer insured just as you can an ATV horse trailer car truck if you had a policy for it. your tractor insurance will not help with the trailer.
semi truck, or semi tractor trailer, and 18 wheeler.
Depends on what type of tractor and trailer you had in mind. For a farm tractor pulling a trailer, it's usually a pintle on the tractor which is run through a clevice on the trailer. For road going vehicles, the fifth wheel trailers are often used, where a trailer kingpin will be inserted and locked into a fifth wheel on the vehicle. In the case of an 18 wheeler, air lines will connect from the tractor to the trailer to operate the trailer's air brake system.
Semi or Tractor Trailer-semi.