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How 18-Wheeler Weight Restrictions Work

We all understand that the faster you go, the longer is takes to stop. This is intensified when you have a vehicle that runs much longer and heavier than passenger cars and trucks. The more an 18-wheeler weighs, the longer it takes for the truck to come to a complete stop upon braking, the easier it is for the truck to roll if it comes around a curve or swerves sharply, and the larger the capacity for danger to other cars on the roadway or damage to the road itself as the truck travels.


Questions Answered on This Page

  • Why do we even have weight restrictions?
  • How much weight can an 18-wheeler legally carry?
  • What happens if a truck is over the legal weight limit?

18-Wheelers have Weight Limits to Protect the Public

Weight regulations are in place to make sure we’re all safer on the roadway. There is a direct correlation between how much a vehicle weighs and it’s ability to successfully maneuver situations like quick lane changes, stopping abruptly because traffic slows or a car swerves into our lane, and other obstacles faced on the roadway.

For example, at the time this article is being written, we’re litigating a case in Fort Worth where cars were stopped in traffic and an 18-wheeler plowed into the stopped vehicles killing several and injuring more.

In a perfect world where the laws of physics were different, an 18-wheeler would weigh as much as a passenger car and be able to carry heavier loads and still maintain adequate braking distances and maneuverability. Unfortunately, the dynamics of transporting heavy loads are a bit like standing in the middle of a triangle and trying to touch all three corners at one time, the closer you get to one the further you are from another. So, the bigger and stronger you make the tractor, the more weight it’s capable of carrying, yet because of its own mass it can actually transport less total cargo. but that’s just not how things work. Regulations are in place for a reason.

Trucks must be 80,000 pounds or less to comply with federal and state regulations

18-wheelers are required not to exceed 80,000 pounds. To put that in perspective, most passenger cars weigh around 3,500 pounds and pickup trucks typically weigh around 5,000. Commercials trucks themselves, naturally, weigh a significant amount.

techsp_weight_distribution

And the total weight includes the cargo and the truck itself. So, if a rig weighs 30,000 pounds, it can’t exceed a cargo weighing 50,000 pounds. This impacts the profit margin for trucking companies. They want to carry as much cargo as possible at a time to make the most money. You’d be surprised how many times we’ve seen trucks accidentally carry closer to 80,000 pounds in cargo because they forgot the limit includes the trailer too.

Here’s what the law says with regard to weight restrictions:

§658.17 Weight.
(a) The provisions of the section are applicable to the National System of Interstate and Defense Highways and reasonable access thereto.

(b) The maximum gross vehicle weight shall be 80,000 pounds except where lower gross vehicle weight is dictated by the bridge formula.

(c) The maximum gross weight upon any one axle, including any one axle of a group of axles, or a vehicle is 20,000 pounds.

(d) The maximum gross weight on tandem axles is 34,000 pounds.

What happens if an 18-wheeler is over the weight limit?

If a driver knowingly or unknowingly travels over the federal weight limit, a few things can happen.

State police try to enforce weight requirements by using “weigh stations” on major highways. You’ve likely seen these before. Truckers are supposed to pull in and and get weighed to make sure they are within the legal limits.

weigh-station

Commercial truck avoid these by two ways:

  • Don’t drive that highway: Truckers know where weigh stations are. They talk to each other over their CB radios and alert each other that on such-and-such highway, a weigh station is open. All they have to do is take back roads around the station—it’s really that simple.
  • Drive right past: State police are often understaffed and underfunded. Cops are supposed to be at the weigh station to watch for “runners” who just drive by without getting weighed, but truckers know that often enough, no cops are there to enforce the rules.
Mindi's father lost his life when an 18-wheeler driver left the roadway and struck a parked car. Learn more about how our firm helped her pursue justice.Read more about this case >

It a truck exceeds that weight limit, drivers face possible consequences:

  • Having their license suspended
  • Facing fines
  • Financial liability

If an accident occurs while a truck is travelling over the weight limit, there are other implications to consider. If an experienced lawyer is able to present evidence that indicates the proximate cause of the accident is that the 18-wheeler was traveling with an excessive cargo weight, juries generally doing respond well to the driver or trucking company responsible.

Unless you’ve got a thorough 18-wheeler accident lawyer on your side, you may never know if the truck that caused your accident was overloaded. The Texas truck accident attorneys at Grossman Law Offices have investigated hundreds of trucks after crashes. Call us whenever it is convenient for you at (855) 326-0000 today.


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