Trailer Inspection Requirements

The trucking industry has to follow many federal regulations regarding interstate commerce and for good reasons. Moving a load of up to 80,000 pounds must be done safely. Did you know that you need a DOT trailer inspection at least once a year? It’s one way to help you keep your trailer on the road and in great condition, whether you’re traveling through , heading to , or setting a course for a destination on the other side of the country. What is a DOT inspection? Our guide covers everything you need to know about trailer inspection requirements for the U.S. Department of Transportation.

What Is a DOT Inspection?

A DOT inspection is what happens if you own a commercial motor vehicle that weighs more than 10,000 pounds. Federal requirements state the vehicle must be inspected every year. The goal is to make American highways safer. 

Another aspect of the DOT inspection is what occurs with the trailer. The inspector confirms that the trailer works properly and can operate safely on highways.

How Often Must I Have a DOT Trailer Inspection?

Trailer inspection requirements dictate the inspection happens once per year. These might occur more often if you’re told to have an inspection at a weigh station.

Who Performs the Annual DOT Trailer Inspection? 

The DoT trailer inspection is conducted by a DOT inspector or a police officer. Whoever looks over your trailer must be trained and certified to perform DOT inspections.

What Happens During a DOT Trailer Inspection?

Trailer inspection requirements in involve the inspector going over a checklist of items to look over and ascertain if these items work as expected. If any of these systems or components do not meet DOT standards, you must undertake semi-trailer repairs. 

See the trailer inspection requirements here.

• Brakes: All brake connections must be solid and the brakes must be in good operating condition.
• Coupling: The inspection will include a thorough review of the coupling chains and pin.
• Doors: The inspector will open and close the doors to make sure they are in working order.
• Hitch: The hitch must meet safety standards for operation.
• Landing gear: The inspector will demonstrate that the landing gear can safely lower and raise the trailer without risk.
• Lights: All lights need to be in working order to safely illuminate the trailer while on the road.
• Roof: The inspector will check the roof for potential sealing issues, leaks, or other damage that could compromise the load inside.
• Springs: The inspector will look at the trailer’s suspension system to see if it works properly.
• Tarpaulin: This feature must be inspected to confirm it can be safely secured to the trailer and will effectively protect cargo without issue during transit.
• Tires/Wheels: Inspectors will check for appropriate pressure, look for wear and tear, and ensure the tires and wheels of the trailer are ready for safe travel. 

Does Your Tailer Need Repairs?

We can help you with repairs. Start by ordering parts through our Repair section. Ordering parts is at no extra cost to you! If you need a quality used truck for your fleet, stop by an International Used Truck Center locationnear you.