Getting waved into a weigh station doesn't have to mean losing your day — or your CSA score. Roughly 4 million commercial vehicles get inspected at roadside every year, and during the 2025 International Roadcheck, 22.6% of vehicles checked were placed out of service, the vast majority for defects a proper pre-trip would have caught. The drivers who sail through aren't lucky; they know what inspectors look at, in what order, and they've already checked it. This cheat sheet is your fast reference: the six CVSA inspection levels decoded, the top violations that ground trucks, and a tight prep routine that gets you back on the road without delay. Keep it handy. Truck Inspection & Maintenance turns the whole routine into a digital pre-trip your drivers finish in minutes. Talk to our team to roll it out fleet-wide.
Roadside Inspection Guide for Truck Drivers
The 6 levels, the top violations, and how to pass without losing your day.
The 6 CVSA Inspection Levels
Every roadside inspection follows one of six standardized CVSA levels. You can't pick which one you get — but knowing what each covers tells you exactly what to have ready. Here's the quick decode, from the full Level I teardown to the paperwork-only checks. Start a free account to keep every truck Level I-ready by default.
North American Standard
The full 37-step inspection — driver credentials, HOS, and a complete vehicle walk-around including under the truck. The most thorough one.
Walk-Around
Driver and vehicle, but only what's checkable without going under the truck. Levels I and II together are 90%+ of all inspections.
Driver / Credential
Paperwork only — license, medical card, HOS/ELD logs, registration. No vehicle inspection.
Special / One-Time
A single-item check, usually to study a specific item or verify a suspected defect.
Vehicle-Only
Full vehicle inspection without the driver present — often done at a terminal or facility.
Radioactive / Hazmat
Enhanced inspection for transuranic waste and highway-route-controlled radioactive material.
The Top Violations That Ground Trucks
Inspectors find the same defects year after year, and just a handful drive most out-of-service orders. During the 2025 Roadcheck, brake and tire violations together accounted for more than 41% of all vehicle OOS violations. Master this short list and you've covered the overwhelming majority of what gets trucks stopped.
Brake Systems
The #1 vehicle out-of-service violation — 24.4% of all OOS. Check pushrod stroke, listen for air leaks, verify the low-air warning.
Tires
21.4% of OOS. Flats, low tread, cuts exposing cord, bulges. A single bad tire can ground you — and you can't even drive to the nearest stop to fix it.
20% Defective Brakes
16.7% of OOS — when 20%+ of the vehicle's brakes are out of adjustment or inoperative. Brakes appear twice in the top three for a reason.
Lights & Cargo Securement
Burned-out lights are a "gateway" defect giving probable cause for a full inspection; improper securement was 10.6% of vehicle OOS.
Driver side: False logs lead
False records-of-duty-status top the driver violations, and five of the top 10 driver violations tie to HOS or ELD. Expired med cards and revoked licenses round it out.
Be Level I-ready before the officer waves you in
Truck Inspection & Maintenance puts a Level I-equivalent pre-trip on every driver's phone — photo-verified checks on brakes, tires, lights, and cargo, instant defect routing, and audit-ready records. No hardware, no contracts. Sign up free and make inspection-readiness a daily habit.
Why You Got Picked
Inspections aren't all random. Knowing how officers choose who to pull in helps you understand your real risk — and why a clean CSA score keeps you moving. There are four main triggers. Reach our team to keep your scores low and your trucks rolling.
Visible defects
A burned-out light, smoking brake, bad tire, or leaking fluid gives an officer probable cause for a full inspection.
CSA / ISS targeting
FMCSA's Inspection Selection System scores every carrier; high scores or recent OOS orders mean higher inspection priority.
Random selection
Even clean records get pulled — a share of inspections is mandated random to maintain oversight.
Safety blitzes
Campaigns like International Roadcheck (May 12–14, 2026), Brake Safety Week, and Operation Safe Driver spike enforcement.
The Pass-Without-Delay Routine
Passing comes down to two things: a sound truck and organized paperwork. Run this routine before every trip and an inspection becomes a formality, not a crisis.
- Walk the perimeter with all lights on — fix any out
- Check tread depth with a gauge, not your eyes
- Listen for air leaks; check slack adjuster travel
- Verify cargo securement and re-check within 50 miles
- Confirm ABS light cycles correctly
- CDL valid with correct class & endorsements
- Current medical certificate, not expired
- ELD logs clean — no unexplained edits or gaps
- Registration, insurance & permits accessible
- Previous DVIR on the vehicle
Frequently Asked Questions
What's the difference between the inspection levels?
There are six CVSA levels. Level I is the full 37-step inspection of both driver and vehicle, including under the truck — the most thorough. Level II is a walk-around without going underneath. Level III is driver paperwork only. Levels IV, V, and VI cover special one-time checks, vehicle-only inspections, and radioactive/hazmat loads. Levels I and II make up more than 90% of all inspections. Start a free account to stay Level I-ready.
What are the most common out-of-service violations?
Brakes and tires dominate. In the 2025 Roadcheck, brake systems were the #1 vehicle OOS violation at 24.4%, tires were 21.4%, and "20% defective brakes" added 16.7% — meaning brakes and tires together topped 41% of all vehicle OOS. Lights and cargo securement round out the vehicle side. On the driver side, false logs lead. Master these and you've covered most of what grounds trucks. Talk to our team about catching them first.
Can I drive to a truck stop to fix an out-of-service tire?
No. Once a vehicle is placed out of service, it cannot move — not even to the nearest truck stop — until the defect is repaired. Only a roadside service call can get an out-of-service vehicle going again. That's exactly why a single bad tire or brake found at your pre-trip is far cheaper to fix in the yard than discovered at roadside.
Why did I get pulled in for inspection?
Four main reasons: a visible defect (burned-out light, bad tire, leak) giving probable cause; CSA/ISS targeting, where FMCSA's system prioritizes carriers with high scores or recent OOS orders; random selection that catches even clean carriers; and safety blitzes like International Roadcheck. Keeping your CSA score low through clean inspections directly lowers how often you're targeted. Sign up free to protect your score.
What are inspectors focusing on in 2026?
HOS and ELD compliance with a sharp eye on tampering — unexplained edits, missing annotations, unassigned driving time, ghost driver profiles, or disconnected devices. Cargo securement is also a major focus. The 2026 International Roadcheck runs May 12–14, but enforcement is year-round, so the safe move is treating every day like Roadcheck week rather than cramming for three days in May.
How do I actually prepare?
Make pre-trip and post-trip inspections a consistent habit, not an afterthought. Walk the truck with lights on, gauge your tread, check brakes and air, secure and re-check cargo, and keep your CDL, medical card, ELD logs, and registration current and organized. A driver who does this and carries clean documents passes the overwhelming majority of inspections without incident. Contact us to standardize it across your fleet.
Turn roadside inspections into a non-event.
Truck Inspection & Maintenance gives every driver a Level I-equivalent digital pre-trip — photo-verified brake, tire, light, and cargo checks, instant defect routing, and audit-ready records that keep your CSA score clean. Free for up to 3 vehicles, no hardware, no contracts.
