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Resource Center

Occupational Health & DOT Compliance Guides

Plain-English answers to the questions drivers, employers, and safety managers ask most � written and reviewed by a certified medical examiner.

DOT Physical Requirements 2026: The Complete Driver Checklist

Everything a commercial driver needs to know before a DOT physical � what the exam covers, the FMCSA medical standards, what to bring, and how to avoid a failed or deferred certificate.

What Disqualifies You From a DOT Physical?

The conditions most likely to cause a failed or deferred DOT medical card � and, just as important, how many of them can still be certified with the right documentation.

FMCSA Drug & Alcohol Testing Rules, Explained

What every CDL driver and motor carrier needs to know about DOT drug and alcohol testing � the six test types, what�s screened, random rates, the Clearinghouse, and consortium requirements.

The DOT Return-to-Duty Process, Step by Step

After a positive test or refusal, federal rules require a specific path back to safety-sensitive work. Here is exactly how the return-to-duty (RTD) process works and how long it takes.

How to Check Your DOT Drug Test Results

Results don't go straight to you or your employer. Here's exactly who reviews them first, how long it takes, and how to check your status.

CDL Medical Card Renewal: How and When to Renew

Your DOT medical card expires � and letting it lapse can downgrade your CDL. Here is how to renew on time, submit it to your state, and avoid a license downgrade.

Employer Screening

DOT Physical vs. Pre-Employment Physical: What�s the Difference?

They sound similar but serve different purposes. Here is how a DOT physical and a pre-employment physical differ � and how to know which one you or your new hire needs.

The FMCSA Clearinghouse Explained

Registration, required queries, what "prohibited" status means, and the CDL downgrade rule that now lets states act on Clearinghouse status directly.

DOT Random Testing Rates: How the Pool & Selections Work

How the FMCSA random testing pool, selection rates, and consortium selections actually work — and what happens if your name comes up.

Employer Screening

Owner-Operator DOT Compliance Checklist

Everything an owner-operator needs to stay compliant: medical card, consortium enrollment, Clearinghouse queries, and recordkeeping.

Employer Screening

Non-DOT Drug Testing: A Guide for Safety-Sensitive Employers

How non-DOT testing differs from FMCSA-regulated testing, who needs it, what panels employers can choose, and how state marijuana laws affect safety-sensitive workplaces.

CVSA Brake Safety Week 2026: What Drivers and Fleets Need to Know

The 2026 dates, the 20% out-of-service rule for brakes, and why an expired medical card can shut a driver down just as fast as a bad brake chamber.

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