Mid-Trip Inspection Procedures
These focused inspection procedures can be performed quickly during rest or fuel stops to identify developing issues before they become critical problems.
Quick Brake System Check
- Listen for air leaks while system is pressurized
- Check air pressure gauge for normal operating range
- Apply service brake and hold for feel and response
- Perform a cautious tug test against parking brake
- Conduct visual inspection of accessible brake components
- Check for unusual smells indicating brake issues
- Feel wheel hubs and brake drums for excessive heat
- Observe for even braking (no pulling) when stopping
Tire & Wheel Heat Check
- Approach wheels cautiously after driving
- Use back of hand to sense heat (never directly touch)
- Compare temperature across all wheels on same axle
- Check for extreme heat indicating bearing problems
- Look for signs of uneven heating across tire surface
- Inspect for bulges that may have developed during driving
- Check inflation by observation or pressure check if time permits
- Document temperature issues for maintenance follow-up
Efficient Walkaround Pattern
- Start at driver's door and move clockwise
- Check front of tractor (lights, engine components)
- Move along passenger side checking tires and frame
- Inspect fifth wheel connection area
- Continue down trailer checking all axles and tires
- Inspect rear of trailer (lights, doors, cargo security)
- Move up driver's side checking all components
- Complete full circle back to starting point
Mid-Trip Coupling System Check
- Visually inspect fifth wheel for proper engagement
- Check that release handle remains in locked position
- Verify safety latch remains engaged
- Inspect for unusual gaps between fifth wheel and trailer
- Check air and electrical connections for security
- Ensure air lines are not chafing or wearing
- Verify sliding fifth wheel remains locked in position
- Look for signs of movement or shifting during travel
Best Practices & Compliance Guidelines
While mid-trip inspections are not specifically mandated by DOT regulations, they represent industry best practices and can help prevent violations and improve safety.
When to Perform Mid-Trip Inspections
- During mandatory HOS rest breaks
- While refueling the vehicle
- At meal or bathroom stops
- After traveling through severe weather
- After navigating challenging terrain
- When experiencing any unusual vehicle behavior
- Every 150-200 miles on extended trips
- At trailer exchange or drop-off locations
Critical Safety Items
- Brake system components and operation
- Tire condition and inflation
- Coupling devices and security
- Cargo securement
- Lights and reflectors
- Steering system
- Wheel integrity
- Fluid leaks that could affect safety
Documentation Benefits
- Creates record of ongoing vehicle monitoring
- Demonstrates driver professionalism and due diligence
- Supports defense in case of accident litigation
- Helps establish timeline of developing issues
- Provides valuable information for maintenance staff
- Reduces potential liability exposure
- Demonstrates safety culture during compliance reviews
- Creates pattern of preventative inspection practices
Taking Action on Findings
- Immediately address any out-of-service conditions
- Contact dispatch/maintenance for guidance on serious issues
- Make minor adjustments that don't require tools
- Document issues that can be monitored but don't require immediate repair
- Secure loose items that could create road hazards
- Adjust route or driving behavior based on findings
- Make short additional stops if conditions need monitoring
- Locate nearest approved repair facility if necessary