What's typically referred to as an 18 wheeler has five axles - steer axle, two drive axles, two trailer axles. Tractor-trailer combinations can have less or more,, depending on the application.
5 now heres your sign
"18 wheeler" referred to tractor-trailer units with a total of five axles (four wheels per drive and trailer axle plus two wheels on the steer axle = 18 wheels). However, it has become a common expression for tractor-trailer units in general, whether or not they have 18 wheels.
18, unless the drive and/or trailer axles run 'super singles' on each side, rather than two 275s or 285s on either side.
That will depend on the length of the trailer, and on the wheelbase of the tractor. The maximum length for a trailer (without requiring a special permit) is 53 feet, while the legal bridge (space between the drive axles and the trailer axles) is 41 feet (except in California, where it is 40 feet). Tractors may have a wheelbase of anywhere from 100 inches to over 300 inches, although the average sleeper berth tractor for long distance haulage will have a wheelbase between 220 and 265 inches.
That depends on the weight, and whether you're simply over weight on a set of axles, or over your gross weight.
The norm will be between 22 and 25 tons.
Anywhere between 100 and 300 gallons.
It has 5 (five) axles, and can have anywhere from 14 to 18 wheels. 4 (four) of the wheels, on 2 (two) axles are drive wheels. It's not like a ordinary 18-wheeler semi, It has no 5th wheel but can pull a trailer with a pindle hitch
18 wheeler has the higher gross weight
on average you need to fuel an 18 wheeler once a day
Between 1600 and 2100 ft/lbs., depending on the engine.