Reactive repairs cost more than planned service. Preventative maintenance at DOT Semi keeps commercial vehicles closer to inspection-ready condition year-round—reducing surprise downtime between annual DOT inspections.
What a solid PM program includes
- Scheduled fluid and filter services per duty cycle
- Brake measurements and air-system checks
- Tire inflation, tread, and dual matching reviews
- Lighting and electrical walk-arounds
- Documented findings so drivers and managers share one truth
Why PM supports DOT compliance
Many roadside failures are wear items that a calendar would have caught. Aligning PM with inspection frequency rules means annuals become confirmation—not crisis. When defects appear, our minor repair team clears them quickly.
Sample fleet PM cadence
| Focus | Typical trigger | Goal |
|---|---|---|
| Driver pre/post-trip | Every dispatch | Catch lights, tires, leaks early |
| Shop PM visit | Miles / hours / months | Service fluids, brakes, wear items |
| Periodic DOT inspection | At least every 12 months | Document formal compliance |
Seasonal fleets (school buses)
Pupil transportation should layer PM onto the school calendar—see our back-to-school, winter, and end-of-year guides—then book shop time at Matthews, NC before peak route weeks.
Get a maintenance plan that fits your fleet
Call (980) DOT-SEMI with unit counts and average monthly miles. We will recommend a practical interval set and combine PM with inspections so compliance and uptime move together.