General Wyoming Trailer Laws & Regulations

Trailer laws in Wyoming are strict and cover a wide range of regulations. Trailer owners in the state must adhere to all the rules or face penalties. This article will provide an overview of some of the key trailer laws in Wyoming, as well as what happens if they are violated. Wyoming is one of those states that take trailer safety seriously.

Are Trailer Brakes Required In Wyoming?

All vehicles must have a service brakes system that can stop the vehicle within 40 feet from an initial speed of 20 mph on a level, dry, smooth hard surface. So, if you’re hauling a trailer in Wyoming, you’ll need to make sure it has working brakes.

Safety is the Name of the Game

Accidents are often caused by drivers who don’t follow the rules. So, it’s important to make sure your trailer is properly equipped and legal. This includes having a working brake system, lights and reflectors, turn signals, and proper tags. All trailers must have an identification number that can be easily read from outside the vehicle.

Penalties for Violating Trailer Laws in Wyoming

If you break any of Wyoming’s trailer laws, you could face fines or other penalties such as suspension of your driver’s license or even jail time. It’s best to make sure your trailer is in compliance before hitting the road — otherwise, you may find yourself on the wrong side of the law!

Are Triple Trailers Legal In Wyoming?

With the exception of W.S. 31-18-808 and 31-18-803(a), no vehicle combination made up of more than three single vehicles is allowed to operate with a special permit or test permit on highways in this state.

Can You Pull A Trailer Behind A Fifth Wheel In Wyoming?

Even though a fifth wheel provides extra space, some people still want to haul an additional trailer, boat, or car. This is called triple towing and has many rules that must be followed.

Wyoming Trailer Laws & Regulations


People are not allowed to live in a house trailer while it is being towed on a public highway.


The total length is 85 feet, the trailer length is 45 feet, and the width (excluding safety devices that are approved by state law)is 102 inches. The height is 14 feet.


The total length is 85 feet, the trailer is 45 feet long, the width is 102 inches (not including state-approved safety devices), and the height is 14 feet.

Hitch and Signals

You are allowed to have a ball hitch mounted on your bumper.


You must have two mirrors, one on the left side and one in the center of the windshield or on the right. If you can't see well with the mirror on your windshield, then you'll need a second mirror on the right-hand side. This second mirror should be positioned so that it reflects a view of what's behind your trailer onto the highway.


Trailers, semitrailers, and other vehicles being drawn at the end of a combination of vehicles must be equipped with at least 2 tail lamps mounted on the rear; either as part of the tail lamps or separately, 2 or more red reflectors; 2 or more stop lamps; and electrical flashing turn lamps.

Speed Limits

Same as for passenger cars/trucks.

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