The Patron DOT Simplified Compliance Guide.
FMCSA regulations explained in plain English. The deadlines that matter, the records you must keep, and the real-world failures that have cost carriers millions — and how to avoid every one of them.
The 12-month compliance calendar
What you're responsible for, when it's due, and where it lives in the regs.
What you must keep on file, forever (or close to it)
The records an FMCSA auditor will ask for first.
DQ Files
One per driver. Application, releases, MVRs, MEC, road test, annual reviews, SPHRs. Retain for duration of employment + 3 years for most docs (391.51).
Drug & Alcohol Records
Test results: positive/refusal records 5 years; negative results 1 year; random selection records 2 years (382.401). Clearinghouse is permanent.
Vehicle Maintenance Files
Annual inspection, repairs, PM records — for the duration of the carrier owns the vehicle + 1 year (396.3, 396.21).
Hours of Service / ELD
Driver's daily logs + supporting documents — 6 months on the device, 6 months at the carrier (395.8).
Accident Register
Every DOT-reportable accident — 3 years from date of accident (390.15).
Roadside Inspection Reports
Forward DVERs to the carrier within 24 hours; the carrier retains them 12 months (396.9).
Real-world compliance failures.
Names and details disguised. The lessons are not.
The owner-operator who forgot the MCS-150 update.
A single-truck carrier missed the biennial MCS-150 update. The DOT number was deactivated. The owner didn't know until a state trooper pulled him over and found the carrier listed as 'not authorized.' Truck OOS at the scale. Driver lost three days of revenue while the owner scrambled to file and reactivate.
$1,500 lost revenue + $1,496 civil penalty (49 CFR 390.19) + customer trust
Tracked the MCS-150 cycle date in our compliance calendar. Sent a reminder 60 days out, 30 days out, 7 days out. Filed it on his behalf with the FMCSA authorization we already have. None of this happens.
The carrier who hired without a Clearinghouse query.
A regional flatbed hired a new CDL driver. HR ran an MVR but didn't run the FMCSA Clearinghouse query — they were unaware it was required. Three months in, the FMCSA pulled the carrier's data and noticed the missing pre-employment query. Driver had a prior positive test reported by his previous employer. He should have been ineligible. Driver was pulled immediately. Carrier was fined.
$5,833 per violation (49 CFR 382.701) + insurance impact + driver replacement
Run the pre-employment full query as part of the standard DQ file build. The hit would have shown up before the driver was hired. We would have notified you, walked you through the SAP referral pathway, and helped you find a different candidate.
The 40-truck fleet that failed its Compliance Review.
FMCSA conducted a Compliance Review. Auditor found gaps on 7 of 22 DQ files — missing road test certificates, missing certificate of violations, three drivers with no annual MVR review. Carrier received a Conditional safety rating. Within 60 days, two key customer contracts were canceled (their procurement policies required Satisfactory rating).
Two contracts worth ~$400,000/yr each + remediation cost + 60-day rating-upgrade process
An annual Mock Audit catches these gaps when they cost nothing to fix. Our DQ file build-out includes the road test, the annual review, the certificate of violations. The auditor finds nothing. The rating stays Satisfactory.
The driver who tested positive — and was put back on the road.
Driver tested positive on a random. The DER (the dispatcher, untrained) put the driver back on the road after a 30-day 'cooling off.' Federal rule requires SAP referral, return-to-duty test, and Clearinghouse reporting. None happened. Driver crashed six weeks later. Plaintiff's attorney discovered the missed protocol during discovery. Negligent retention claim added to the case.
Catastrophic — multi-million dollar settlement exposure
Positive test triggers our SAP-referral coordination immediately. Driver doesn't drive again until follow-up testing and Clearinghouse RTD entry is complete. Trained DER is required. None of this happens.
The new-entrant who failed the Safety Audit.
Within 12 months of receiving the DOT number, every carrier gets a New-Entrant Safety Audit. This carrier didn't know about the random drug & alcohol pool requirement (382.305). At the audit, they had no consortium, no pool documentation, no random selections. Safety Audit failed. DOT number suspended pending corrective action.
Operations halted ~3 weeks while corrective action plan was filed + drug program built
From day one of new-entrant status, you're in our consortium. You have a written D&A policy. Random selections start the month after enrollment. The audit is a non-event.
The CSA score primer
The 7 BASICs the FMCSA uses to decide if you get audited.
Unsafe Driving
Speeding, reckless driving, mobile phone use, improper lane changes. Worst BASIC for triggering an audit.
HOS Compliance
Drive-time overages, logbook falsification, ELD malfunctions handled incorrectly.
Driver Fitness
Expired CDLs, missing MECs, DQ file gaps. Largely paperwork-driven.
Controlled Substances & Alcohol
Failed tests, refusals, prior violations not properly handled. One positive can spike this.
Vehicle Maintenance
Brakes, tires, lights, OOS conditions. Tracked from roadside inspections.
HazMat Compliance
Placards, paperwork, leaks, packaging. Applies only if you haul HazMat.
Crash Indicator
Both preventable and non-preventable. DataQ challenges can move this.
Now you know what they want. Want it handled?
Hand the entire compliance stack to Patron. We do the work. You drive the business.