Knowledge Center
FMCSA rules, inspections, and staying legal on the road — in plain English.
The driver vehicle inspection report under 49 CFR 396.11 — when a written report is actually required since the 2014 rule change, how it differs from your pre-trip duty under 396.13, and who signs what in the repair loop.
8 min read →
What FMCSA's CSA program and Safety Measurement System actually score: the seven BASICs, severity and time weighting, why there is no public "driver CSA score," and how inspections still follow drivers through the PSP.
9 min read →
How FMCSA's DataQs system works: who can file a Request for Data Review, what DataQs can and cannot change, the crash preventability program, and how to build a dispute that the reviewing agency can actually act on.
8 min read →
What 49 CFR 393.9–393.26 and Table 1 of 393.11 actually require: which lamps and reflectors a truck and trailer must have, their required colors and positions, the all-lamps-operable rule, and the conspicuity treatment on trailers.
9 min read →
The periodic inspection rule in 49 CFR 396.17–396.25: every CMV inspected at least every 12 months against Appendix A, by a qualified inspector, with documentation kept — and how it differs from roadside inspections and the daily pre-trip.
9 min read →
The eight CVSA North American Standard inspection levels side by side — what each level covers, which ones examine the driver, the vehicle, or both, which can earn a decal, and how drivers should prepare for each.
8 min read →
How the CVSA North American Standard Out-of-Service Criteria work: the difference between driver OOS and vehicle OOS, where the criteria come from, what an OOS order means, and how drivers avoid the conditions that trigger one.
8 min read →
The federal cargo securement rules in 49 CFR Part 393 Subpart I: the performance standard, aggregate working load limit, the general tie-down minimums, and why commodity-specific rules override the general counts.
9 min read →
The DOT testing program under 49 CFR Parts 40 and 382: the six test types, the 0.04 and 0.02 alcohol lines, what the Clearinghouse records and who must query it, and the SAP-supervised return-to-duty and follow-up process.
10 min read →
How DOT medical certification works under 49 CFR 391.41–391.45: what the certified medical examiner evaluates, how long certificates last, the CDL self-certification step, and how regulatory paths handle conditions like insulin-treated diabetes.
9 min read →
The CVSA North American Standard Level I inspection — the most thorough roadside inspection — explained for drivers: the driver-side checks, the vehicle-side checks, the CVSA decal, and how to be ready before you're ever waved in.
8 min read →
The six DOT inspection levels, what officers actually check, and how to walk away clean — explained by a driver, not a lawyer.
6 min read →