Glossary

Roadside inspection

Last reviewed: 2026-05-20

Source review note: This term covers a compliance, regulatory, or enforcement topic where current rules, annual updates, or carrier policy may affect the correct answer. Use this as background only. Verify applicable regulations and carrier policy before making decisions.

An inspection of a commercial motor vehicle conducted at the roadside by authorized enforcement personnel, typically under DOT authority. Tire defects observed during a roadside inspection can result in out-of-service orders for the vehicle. Common tire-related triggers include tread below federal minimums, visible cord, flat tires, sidewall bulges, and prohibited tire conditions.

Fix defects before dispatch. A roadside out-of-service order is more disruptive than a pre-trip correction.

Real-World Use

A driver dispatched without completing a full pre-trip finds a drive tire flagged during a Level I roadside inspection for tread depth below the 2/32 inch minimum — the vehicle is placed out of service and towed to a shop.

Reference Sources

Sources used for context and verification of regulatory thresholds, inspection criteria, and compliance references on this page.

Ind CVSA North American Standard Out-of-Service Criteria overview (Commercial Vehicle Safety Alliance, reviewed 2026-05-20)
Gov FMCSA Motor Carrier Safety Planner: Tires (393.75) (Federal Motor Carrier Safety Administration, reviewed 2026-05-20)

What to Pair It With

Read this term with the full tire sidewall, vehicle rating information, manufacturer documentation, and the actual condition of the tire.

This site is for general information only. It does not replace professional tire service, DOT compliance advice, tire manufacturer instructions, vehicle manufacturer recommendations, or fleet policy.