The standard trailer is 53'. Most likely the only time you'd encounter a trailer that's smaller than that is doing LTL work, or food service. Those types of companies of utilize smaller trailers frequently due to the close quarter maneuvering they face a majority of their day. Doing that work you may encounter 28, 33, 36, 40, 45, 48 or 53 footers. I've seen mentioned here before that Hobby Lobby uses a 57' but I'm sure they need a special permit for it.
Are you confusing trailer length with kingpin laws? Kingpin law restricts how much space you have from the kingpin to your tandems.
Refers to carriers that make a lot of smaller pickups and deliveries for multiple customers as opposed to hauling one big load of freight for one customer. This type of hauling is normally done by companies with terminals scattered throughout the country where freight is sorted before being moved on to its destination.
LTL carriers include:
A set of axles spaced close together, legally defined as more than 40 and less than 96 inches apart by the USDOT. Drivers tend to refer to the tandem axles on their trailer as just "tandems". You might hear a driver say, "I'm 400 pounds overweight on my tandems", referring to his trailer tandems, not his tractor tandems. Tractor tandems are generally just referred to as "drives" which is short for "drive axles".
A set of axles spaced close together, legally defined as more than 40 and less than 96 inches apart by the USDOT. Drivers tend to refer to the tandem axles on their trailer as just "tandems". You might hear a driver say, "I'm 400 pounds overweight on my tandems", referring to his trailer tandems, not his tractor tandems. Tractor tandems are generally just referred to as "drives" which is short for "drive axles".
Thanks. I'd never heard of Kingpin laws, so that's new for today! I was talking about differences in study guides/apps which give differing answers to the same questions. I'm sure it'll all fall into place.
Use this site and learn the material not the questions. Read them carefully. You will absolutely pass using this site. I was the first in my class to pass all the tests thanks to this site.
What exactly questions did you mean?
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I start Truck Driving School next week in Florida and have been using the High Road Training Program to help prepare - very nice, and the whole site is awesome! That said, I am seeing several difference between the study materials provided by the company that is linked to my school, and the High Road Training Program material. For example, permissible tractor/trailer length: 53ft or 45ft?