16,000 - 20,000 lbs usually for the front part ("truck", "tractor", "cab"). But the empty trailer adds several tons more. For example a 53 foot long simple box ("van") trailer weighs 10,000-15,000...
To be legal for interstate travel with no extra permits the legal limit is 80,000 lbs. 20,000 lbs on single axles, 34,000 on dual axles. 12,000 on the steer axle .
16,000 - 20,000 lbs usually for the front part ("truck", "tractor", "cab"). But the empty trailer adds several tons more. For example a 53 foot long simple box ("van") trailer weighs 10,000-15,000...
Depends on the type. Generally, they can range between 8,000 and 12,000 lbs for the basic types which you normally see, and heavier for specialised units, such as lowboy trailers.