One in Three Trucks Failed Blitz Week, What That OOS Rate Does to CSA

How does a blitz week violation affect my CSA score?

Every violation from the May 2026 CVSA blitz enters FMCSA's Safety Measurement System exactly as every other roadside inspection does. Roadcheck is not a separate category. The inspections are logged, the violations are coded, and the points accumulate in the relevant BASICs (Behavior Analysis and Safety Improvement Categories). Out-of-service violations carry a severity multiplier of 2.0 in the SMS (Safety Measurement System) calculation, meaning a violation that grounds the truck scores twice as heavily as the same type of violation that does not produce an OOS condition.

The 2026 CVSA International Roadcheck ran May 12 through May 14. The surrounding DOT Blitz Week extended from May 10 through May 17, producing 15,952 total inspections and a 32.8 percent out-of-service rate. CVSA stated that final official results were still being finalized as of mid-May. The 32.8 percent figure reflects the full blitz week data tracked through FMCSA's inspection system, compared to CVSA's official 2025 Roadcheck result of 18.1 percent over 56,178 inspections.

On Day 1 of the 2026 event, FMCSA inspection records showed 1,580 inspections, 2,637 violations, and 496 out-of-service orders, a 31.4 percent OOS rate from day one, already substantially above the 2025 full-event benchmark. Roughly one in three trucks inspected during the enforcement period had at least one violation serious enough to ground it on the spot.

What violations drove the OOS rate

The 2026 focus areas were ELD (electronic logging device) tampering and cargo securement on the vehicle side. But brake system failures, tire violations, and lighting defects generated the highest volume of actual OOS orders. Focus areas signal where inspectors spend additional time. They do not narrow what inspectors check. A Level I inspection is a 37-step procedure covering every critical system on the truck and every component of the driver's operating qualification.

Trucks were not failing disproportionately because of ELD issues. They were failing because of the violations that always produce OOS orders: brakes, tires, and lights. Brake-related issues accounted for more than 40 percent of all vehicle OOS violations in 2025, with 3,304 flawed brake system violations and 2,257 vehicles with 20 percent or more defective brakes. Tires and lighting rounded out the top three categories in 2026.

Cargo securement violations generated significant OOS orders, consistent with it being the named 2026 vehicle focus. But the volume leaders were mechanical, not documentary. A truck that fails blitz week inspection is most likely to fail because of brake adjustment, tire condition, or lighting, not because the driver's log had an annotation issue.

How SMS scores work and what the 24-month window means

The SMS scores carriers see in the FMCSA SMS public portal are calculated on a sliding 24-month window with time weighting. Violations in the most recent six months carry the highest weight, violations from seven to 12 months carry a reduced weight, and violations from 13 to 24 months carry the lowest weight before aging off. Multiple violations within a single inspection can increase the overall impact on a carrier's score.

The seven BASICs and the violations that feed them are specific. Brakes are the primary driver of the Vehicle Maintenance BASIC. Tire condition and tread depth violations also feed Vehicle Maintenance. Lighting violations, specifically inoperative required lights, feed Vehicle Maintenance. Hours-of-service violations feed the HOS Compliance BASIC. ELD falsification or tampering violations, the 2026 driver focus area, feed the HOS Compliance BASIC directly. Cargo securement violations feed the Cargo-Related BASIC.

The BASICs percentile ranking is the number that matters for insurance purposes. The SMS calculates each carrier's violation rate per inspection relative to all other carriers in a similar category, producing a percentile score from 0 to 100. A carrier in the 75th percentile in Vehicle Maintenance scores worse than 75 percent of comparable carriers. FMCSA's intervention thresholds, which trigger safety reviews, range from 65 to 80 percent depending on the BASIC.

A carrier who received multiple OOS violations in a single blitz week inspection, which is common given that brake, tire, and light issues often travel together, is looking at a significant point accumulation in the Vehicle Maintenance BASIC that will show up in their SMS score for the next 24 months. A carrier with Vehicle Maintenance already at 65 percent who takes two OOS violations during blitz week may find that BASIC crossing 80 percent, which puts them into the segment of carriers that standard market underwriters specifically flag as elevated risk.

What underwriters do with elevated CSA percentiles

The relationship between CSA scores and insurance pricing and availability has strengthened materially over the past two to three years. For carriers already operating near intervention thresholds in the Hours of Service or Vehicle Maintenance BASICs, a poor inspection during this period can have a measurable effect. A carrier who crosses into elevated SMS percentiles during the 24-month window in which a renewal is being underwritten may find their quote comes back from a non-standard carrier at a higher rate, or not at all from preferred market carriers.

The insurance consequence is not abstract. Several underwriters have already moved cameras from a discount-generating feature to a coverage-qualifying requirement. CSA scores are on the same trajectory: what currently affects pricing is beginning to affect availability.

The blitz week also matters specifically for brokers applying post-Montgomery vetting standards. As the Supreme Court's unanimous ruling in Montgomery v. Caribe Transport II established, brokers now face direct state-court liability for negligent carrier selection. Brokers who can demonstrate a documented vetting process will increasingly run FMCSA profile checks that surface elevated BASIC percentiles. A carrier whose Vehicle Maintenance BASIC spiked after blitz week may find that the practical consequence is not an insurance conversation but a broker conversation, where the load tender simply does not come.

The pre-trip items that blitz week exposes

The pre-trip inspection required by 49 CFR 396.13 is not a formality. It is a federally required review of the vehicle's condition before every dispatch. Carriers with OOS violations from blitz week almost universally had a violation that existed before the truck left the yard. The inspector did not create the problem, they found it.

The specific items that need attention before every dispatch, calibrated to the violations that generated the highest OOS volume in 2026:

Brake adjustment. Each brake chamber has a push rod that moves when the brakes are applied. The maximum stroke before the brake is considered out of adjustment varies by chamber size and is specified in 49 CFR Part 393. A quick measurement during pre-trip using a ruler against the reference marks on each chamber tells you whether adjustment is needed. Automatic slack adjusters maintain brake adjustment continuously but they fail and need to be checked. Brake lining condition, air hose integrity, and air system pressure checks belong in the same sequence.

Tire inspection. Tread depth, inflation, and sidewall condition are the three tire categories that produce violations. A tire below 2/32 inch tread on a steer axle, 1/32 on other positions, or visibly damaged, flat, or underinflated is an OOS condition. A pressure gauge check of every position at each fuel stop costs five minutes and catches the under-inflation that was invisible at the yard but obvious to an inspector at the scale.

Lighting. Every required light must be operational on every dispatch. Headlights, taillights, brake lights, turn signals, clearance lights, and marker lights all have to work. The simplest way to verify this is a walk-around with the lights activated while another driver or a reflective surface confirms function. A burned-out marker light that costs a few bucks to replace at a truck stop is an OOS condition at the scale.

Cargo securement. The 2026 focus area requires that every load be contained so it cannot shift, fall, or create a hazard. Working load limit calculations, tiedown quantity and condition, and blocking against forward movement are the three elements inspectors verify. Blitz week reporting noted that loose equipment on the truck, including spare chains, tarps, dunnage, and tools, generates violations at the same rate as unsecured freight. Walk the trailer as if the inspector is standing next to you. Anything that can move needs to be secured.

ELD compliance. The 2026 driver focus on ELD tampering and falsification applies year-round, not just during blitz week. Unexplained log edits without annotations, unassigned driving time, and patterns suggesting driving time is being concealed are what inspectors look for. A driver who does not understand how to transfer ELD records during an inspection creates a delay and potentially a violation. Know your ELD's transfer procedure before you reach the scale. FMCSA has revoked 67 ELD devices in 16 months, and carriers using revoked devices face out-of-service violations.

What to do if you got violations during blitz week

If your truck or driver received violations during the May blitz, the violation data is already in FMCSA's system. The question is not whether it happened. The question is what to do about it.

Pull your current FMCSA safety profile and SMS scores from the SMS website. The portal is publicly accessible at safer.fmcsa.dot.gov. Enter your USDOT number and review your percentile rankings in each BASIC. If you crossed an intervention threshold (65 to 80 percent depending on the BASIC), you may receive a notice from FMCSA triggering a safety review. If you are approaching a threshold, the blitz violations may push you over.

Document the corrective action you took for every violation. If the violation was a brake adjustment issue, document the repair with an invoice showing the date, the specific brake chamber replaced or adjusted, and the mechanic who performed the work. If the violation was a tire, document the replacement tire purchase and installation. If the violation was lighting, document the bulb replacement. FMCSA does not automatically remove violations from your SMS score because you fixed the problem, but documented corrective action is the foundation of a DataQs challenge if the violation was issued in error or if mitigating circumstances apply.

If you believe a violation was issued incorrectly, file a DataQs request through FMCSA's DataQs system within the statute of limitations. The DataQs process allows carriers to challenge the accuracy of inspection data. You must provide supporting documentation. A successful DataQs challenge can result in the violation being removed from your SMS calculation, which directly affects your percentile ranking.

Review your maintenance program. If blitz week violations exposed gaps in your pre-trip discipline or your scheduled maintenance intervals, the fix is not a one-time repair. The fix is a process change that prevents the same violation category from recurring. Brake violations that appear in multiple inspections over a 24-month period signal a systemic maintenance issue, not a one-off failure, and underwriters read that pattern as elevated risk.

The compliance step small fleets must take this week

Run your SMS profile tonight. If your Vehicle Maintenance BASIC percentile increased after blitz week, contact your insurance agent before your renewal date and ask whether your current percentile ranking affects your quote. Do not wait for the renewal notice. Underwriters are pulling SMS data at the time they write the quote, not at the time the policy renews. A carrier who discovers at renewal that their quote doubled because of a blitz week violation has no time to remediate the underlying issue or to shop alternate markets.

If you are approaching an intervention threshold in any BASIC, prioritize corrective action on the violation categories that carry the highest severity weights. Brake violations, tire violations, and lighting violations are the three categories that produced the highest OOS volume in 2026. They are also the three categories that feed the Vehicle Maintenance BASIC most heavily. A single OOS brake violation can move your percentile ranking by 10 to 15 points depending on your inspection volume and your existing violation history.

Schedule a Level I inspection walk-through with your drivers this week. The 37-step procedure that inspectors follow is publicly documented in the CVSA inspection manual. Walk through the procedure with your drivers so they know what the inspector is checking and what the OOS thresholds are for each component. A driver who understands that a tire below 2/32 inch tread on a steer axle is an automatic OOS condition will catch that tire during pre-trip, not at the scale.