USDOT Compliance Guides

New to DOT compliance? We've got you. Plain English guides that walk you through everything — whether you're just getting started or want to put compliance on autopilot.

📚 Comprehensive Guides

Start here. These guides break down each area of DOT compliance into simple, actionable steps.

📋

The Ultimate DOT Compliance Checklist for Small Businesses in 2026

A comprehensive, step-by-step checklist covering every federal DOT requirement your small fleet needs to meet — from driver qualification files to vehicle inspections.

📖

FMCSA Compliance Guide for Small Fleet Owners

Everything you need to know about FMCSA regulations — from operating authority and insurance requirements to safety management systems and CSA scores.

📂

Driver Qualification File (DQF) Requirements: What You Must Have on File

A detailed breakdown of every document the FMCSA requires in a driver qualification file, including retention periods, common gaps, and how to stay organized.

🔧

DOT Vehicle Maintenance & Inspection Compliance Guide

Your complete guide to vehicle maintenance compliance — annual inspections, DVIRs, preventive maintenance programs, records, and roadside inspections.

🧪

DOT Drug & Alcohol Testing Compliance: The Complete Program Guide

Build and manage a fully compliant drug & alcohol testing program — test types, Clearinghouse requirements, random selection, and record retention.

📝 All Articles

Answers to the specific questions that come up as you get your fleet compliant.

How to Pass a DOT Audit: A Complete Preparation Guide

Learn exactly what DOT auditors look for, how to organize your records, and the top mistakes that lead to fines.

💰

DOT Compliance Costs & Fines: What Non-Compliance Really Costs

Breaking down the real cost of DOT violations — from per-violation fines to out-of-service orders and lost revenue.

🆕

New Entrant Safety Audit: What to Expect & How to Prepare

Your first 18 months guide — what FMCSA reviews, how to prepare, and what happens if you fail.

🔢

USDOT Number Requirements: Who Needs One & How to Get It

Everything about USDOT numbers — who needs one, how to apply, keeping it active, and operating without one.

📝

UCR Registration: Fees, Deadlines & Requirements

Complete guide to Unified Carrier Registration — who must register, fee brackets, deadlines, and penalties.

📄

BOC-3 Filing: What It Is and Why Your Authority Depends on It

Guide to BOC-3 process agent filing — what it is, how to file, costs, and what happens if it lapses.

🔄

MCS-150 Biennial Update: Don't Let Your USDOT Number Go Inactive

When it's due, how to file, and what happens if you forget this quick 10-minute form.

IFTA Reporting for Small Fleets: A No-Nonsense Guide

Step-by-step quarterly fuel tax filing — what to track, deadlines, and the mistakes that cost you money.

🗺️

State DOT Compliance: The Requirements You Might Be Missing

State-specific rules that go beyond federal requirements — intrastate authority, emissions, inspections, and more.

🚛

DOT Compliance for Owner-Operators: Your Solo Carrier Guide

Running legal as a one-truck fleet — leased vs own authority, the minimum checklist, and the consortium situation.

⚠️

10 Most Common DOT Violations and How to Avoid Them

The top violations from 3.5 million roadside inspections — and the simple prevention steps for each.

📊

CSA Scores Explained: What They Mean for Your Business

How CSA scores work, the 7 BASICs, intervention thresholds, and how to improve your scores.

🏛️

FMCSA Operating Authority: MC Number Guide

Operating authority types, the application process, activation timeline, and maintaining your MC number.

🛡️

DOT Insurance Requirements: Minimums, Filing & Common Pitfalls

Insurance minimums, BMC-91 filing, what happens when insurance lapses, and reducing premiums.

FMCSA Safety Ratings: Satisfactory, Conditional & Unsatisfactory

What safety ratings mean, how they're assigned, getting upgraded, and the business impact.

📁

DOT Audit Document Checklist: Every Record You Need Ready

The complete audit-ready file checklist for company, driver, vehicle, and drug program records.

🔀

Interstate vs Intrastate: Which Rules Apply to You?

Key differences between interstate and intrastate compliance — regulations, exemptions, and the gray area.

🚨

The DOT Accident Register: What Most Carriers Get Wrong

What qualifies as a recordable accident, required information, and why you need the register even if it's blank.

🔍

Inside an FMCSA Compliance Review: What Actually Happens

Day-by-day walkthrough of a compliance review — triggers, document review, closing conference, and after.

👤

DOT Compliance Officer: Do You Actually Need One?

The compliance officer role, costs, alternatives for small fleets, and when you need a dedicated person.

⏱️

Hours of Service (HOS) Rules Explained: 2026 Complete Guide

A plain-English breakdown of the FMCSA Hours of Service rules — driving limits, break rules, and the cycle explained.

🏦

The FMCSA Clearinghouse: A Practical Guide for Employers

Registration, full and limited queries, reporting requirements, and the common mistakes carriers make.

🪪

CDL Requirements: Classes, Endorsements & Restrictions

License classes, key endorsements, common restrictions, and what carriers must verify.

🏥

DOT Medical Cards: Everything a Carrier Needs to Know

National Registry examiners, disqualifying conditions, waiver programs, and keeping medical cards current.

📱

ELD Compliance: The Rules, the Exemptions, and the Headaches

The ELD mandate, choosing a device, unidentified driving events, malfunctions, and driver training.

📋

MVRs: How to Pull Them, Read Them, and Act on Them

When to pull MVRs, what to look for, the annual review process, and handling bad records.

📍

The Short-Haul Exemption: Who Qualifies and What It Means

150 air-mile radius rules, CDL vs non-CDL short-haul, and when you lose the exemption.

🎓

Entry-Level Driver Training (ELDT) Requirements

Who must complete ELDT, what it covers, Training Provider Registry, and carrier responsibilities.

📃

Annual Certificate of Violations: Quick, Easy, and Almost Always Missing

What it is, when it's due, the form, and why this 3-minute task matters in audits.

🤝

Hiring CDL Drivers: The Compliance Steps You Can't Skip

Pre-hire requirements, onboarding paperwork, and documents you must collect before first dispatch.

✍️

DVIR Best Practices: Getting Pre- and Post-Trips Right

What the regulation requires, pre-trip vs post-trip, what a good DVIR process looks like, and digital vs paper.

🛠️

Building a Preventive Maintenance Program That Actually Works

PM intervals, written program requirements, documentation, and the critical brake check.

🔎

The Annual DOT Inspection: A Deep Dive

What gets inspected, who can inspect, the report and sticker, and common failure points.

🛑

Brake Compliance: Why Brakes Are Your Biggest Exposure

Brake adjustment standards, why brakes go out, measurement techniques, and beyond adjustment.

🔘

Tire Compliance: Tread Depths, Conditions, and When You're Out of Service

Minimum tread depths, immediate OOS conditions, retreads, inflation, and simple prevention.

🚦

Roadside Inspections: What Happens, Rights & How to Prepare

The 6 inspection levels, your rights, how to pass consistently, and the value of clean inspections.

🚚

Trailer Maintenance: The Compliance Area Everyone Forgets

Key trailer requirements, the lighting problem, and dealing with intermodal and leased trailers.

🏷️

Vehicle Marking Requirements: Getting Your USDOT Lettering Right

What must be displayed, size and format rules, magnetic signs, and common mistakes.

📒

Fleet Maintenance Records: What to Keep, How Long, and Why

Part 396.3 requirements, retention periods, digital vs paper, and the outsourced shop problem.

🧯

Emergency Equipment: The Small Items That Cause Big Fines

Fire extinguishers, warning triangles, spare fuses — what every CMV must carry and how to check.

🎲

Random Drug Testing: Rates, Selection & Common Errors

Annual testing rates, the random selection process, owner-operator consortiums, and documentation.

👁️

Reasonable Suspicion Training: Preparing Your Supervisors

Training requirements, what to watch for, the process, and after-test procedures.

🚑

Post-Accident Testing: When You Must Test and When You Don't

Decision criteria for post-accident testing, testing windows, and best practices.

🔬

The DOT Drug Testing Panel: What's Actually Being Tested

The 5 drug classes, the collection process, MRO review, and the marijuana federal standard.

🔁

SAP Return-to-Duty: Steps, Timeline & Costs

The full return-to-duty process after a positive test — SAP evaluation, testing, follow-up, and costs.

📜

Writing Your DOT Drug & Alcohol Policy: What Must Be Included

Required elements, distribution, acknowledgment forms, and going beyond the minimum.

🤲

Drug Testing Consortiums: A Small Fleet's Best Friend

How consortiums work, what they cost, what to look for, and red flags.

🗄️

Drug & Alcohol Record Retention: A Cheat Sheet

Retention periods organized by document type — 5-year, 3-year, 2-year, 1-year, and indefinite.

🍺

DOT Alcohol Testing: Thresholds, Methods, and Rules

BAC thresholds, breath testing methods, when testing occurs, and the 4-hour pre-duty rule.

Ready to Simplify Your DOT Compliance?

Stop worrying about audits and fines. Greenlight USDOT keeps your fleet compliant 24/7.

Start Free Trial