Ever felt that nagging worry you might have missed something crucial during your pre-trip inspection? It’s a common concern, especially when you’re under pressure to get on the road. Skipping steps or rushing can lead to costly DOT violations, breakdowns, or even worse, accidents. This post highlights some of the most frequently overlooked items on a semi-trailer pre-trip inspection, helping you stay safe and compliant.
Lights and Reflectors
There are a lot of lights on a semi-trailer, making it easy to overlook one. A single burned-out bulb is a DOT violation, so take the extra time to check them all:
- Headlights: High and low beams.
- Turn Signals: Front, side, and rear.
- Brake Lights: Including the trailer brake lights.
- Running Lights: Also known as marker lights.
- Clearance Lights: Located on the top and sides of the trailer.
- Side Markers: Along the length of the trailer.
- Reflectors: Ensure they are clean and not damaged.
Don’t just glance; visually inspect each lens for cracks or damage that could obscure the light.
Tires
Tires are your connection to the road, so a thorough inspection is crucial. Beyond air pressure and tread depth (use a gauge!), check for sidewall bulges or cuts. These are signs of severe damage and can lead to blowouts. Remove any rocks, nails, or other debris lodged in the tread of your tires. These can become dangerous projectiles. Check for looseness (tap them with a lug wrench), rust trails (indicating potential loosening), or missing nuts. Lastly, use a tread depth gauge to ensure you meet legal requirements.
Brake System
Your brakes are arguably the most critical safety component. Never assume they’re “good enough.”
- Air Lines and Connections: Check all air lines for cuts, abrasions, or leaks. Listen for hissing sounds. Ensure all connections are secure.
- Brake Chambers: Verify they are securely mounted and not damaged.
- Brake Shoes/Pads: Visually check for excessive wear. If in doubt, have them checked by a mechanic.
- Tug Test: With tractor and trailer brakes set, gently try to pull forward. The trailer brakes should hold firmly.
A thorough pre-trip inspection isn’t just about avoiding DOT violations; it’s about ensuring your safety and the safety of others. It can also prevent costly breakdowns and repairs on the road. Those few extra minutes you spend before you leave will make your trip safer and easier. Need help with semi-trailer maintenance or repairs? Contact us today!
