You're probably referring to some sort of sleeper cab truck. You might be referring to the ICT sleepers.
Big truck, semi, 18 wheeler.
To get the answer, you need to weigh your tractor trailer empty. When you get that weight, Lets talk numbers, this is wrong but it is a big example. If your tractor trailer is 35,000 pounds empty. Means you can haul about 45,000, as long as you are not overweight on your three axles. Steer, Rear, and trailer axles. 12/34/34.
The correct use of the word Semi is to refer to the trailer, if a trailer has wheels in the front and back it is a 'full' trailer. A trailer pulled by a tractor/truck using a fifth wheel connection on the front and only having wheels in the back is referred to as a 'semi' trailer. The tractor trailer combination weights approx. 34,000 lbs empty, 80,000 lbs loaded. The tractor itself is around 18,000 lbs. Trailers vary from approx. 30-53 feet with the tractor adding around 12 feet for a total of around 65 feet. The standard height is 13' 6" tall.
Typically, 11 to 16 liters displacement, depending on exact make and model of engine.
You can weigh your tractor and trailer at any Pilot, Loves, Circle K, any truck stop with a Cat Scale (Big Yellow Sign that says Cat Scale).
Big truck, big rig, semi truck, semi-articulated truck, 18 wheeler, large car, Heavy Goods Vehicle (primarily a British term), lorry (also primarily British), CMV - Commercial Motor Vehicle (although this term doesn't apply to tractor-trailers alone).
As big as the customer specifies it to be, within legal limits. It could be anything from a 1/4 ton pickup all the way up to a tractor-trailer.
They're usually 22.5s, although some owner/operators and small fleet owners run 24.5s instead.
depends on the size of the tractor
A semi-trailer truck usually has eighteen wheels. For this reason, many people call semitrailers "18-wheelers". They're also known as "mack trucks", "tractor-trailers", and "big rigs".
What are they trailer called on a tractor trailer? Lets you got a dry-van. This is a big 53foot box. You got a flatbed which is 48foot long. You got tankers, which is also 48 feet long. You got doubles, triples which are 48 feet long (only allowed on turnpikes)
No. Some straight trucks might have it available as an option, but it's a bit pointless on a tractor-trailer. That's why you get out and look.