Trucking Compliance Guides — TruckersResourceHub.com

TruckersResourceHub.com — Compliance Center

Trucking Compliance Guides

Plain-English breakdowns of HOS rules, FMCSA regulations, DOT inspections, and CDL requirements — everything drivers and owner-operators need in one place.

📅 Updated 2025

Why this matters: FMCSA violations result in out-of-service orders, fines from $1,000 to $16,000+, and CSA score points that follow your record for 3 years. These guides are written in plain English — no legal jargon, no hunting through government PDFs.

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Hours of Service (HOS) Rules

Required Knowledge

Rule	Limit	What it means
11-Hour Driving Limit	11 hours max	You may drive a maximum of 11 hours after 10 consecutive hours off duty.
14-Hour Window	14-hour clock	You cannot drive beyond the 14th consecutive hour after coming on duty, regardless of breaks taken.
30-Minute Break	After 8 hrs driving	Required if you have driven for a period of 8 cumulative hours without at least a 30-minute interruption.
60/70-Hour Limit	60 hrs/7 days OR 70 hrs/8 days	Cannot drive after being on duty 60/70 hours in 7/8 consecutive days. Restart with 34+ consecutive hours off.
Sleeper Berth Provision	Split: 8+2 or 7+3	Split rest into two periods: one at least 7 hrs in berth, the other at least 2 hrs. Neither counts against 14-hr window.
34-Hour Restart	34 consecutive hrs off	Resets your 60/70-hr clock. Can only be used once every 168 hours (7 days).
Short-Haul Exception	150 air-mile radius	Drivers operating within 150 miles of home terminal may be exempt from 30-min break and ELD requirements (conditions apply).

⚠ Critical — Log it right HOS violations are the #1 source of CSA points. An 11-hour violation alone carries 7 points. Keep your ELD synced and never manually falsify logs — that’s a federal offense.

💡 Adverse Driving Conditions Exception If you encounter conditions you couldn’t have anticipated (snow, ice, accidents), you may extend your 11-hour driving limit and 14-hour window by up to 2 hours. Document it in your remarks.

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Key FMCSA Regulations

Important

CFR Part 383

CDL Standards

Governs commercial driver’s license requirements, testing, endorsements, and disqualifications across all states.

CFR Part 390

General Rules

Defines who is subject to FMCSRs, record-keeping requirements, and general applicability for CMV operators.

CFR Part 391

Driver Qualifications

Medical certificates, driver qualification files, road tests, and annual reviews of driving records.

CFR Part 392

Driving Rules

Covers texting, cell phone use, railroad crossings, hazmat placards, and general safe driving requirements.

CFR Part 393

Parts & Accessories

Required equipment on every CMV: brakes, lights, reflectors, tires, cargo securement, and more.

CFR Part 395

Hours of Service

The federal HOS rules, ELD mandate, exemptions, and record of duty status requirements for property carriers.

CFR Part 396

Inspection & Maintenance

Requires regular inspection, maintenance, and repair of every CMV. Annual inspection records must be kept on file.

CFR Part 382

Drug & Alcohol Testing

Controlled substance and alcohol testing programs required for all CDL holders operating CMVs in commerce.

📱 Cell Phone & Texting — Zero Tolerance Texting while driving a CMV: $2,750 fine per offense + 3 CSA severity points. Using a hand-held mobile phone: $2,750 fine + 3 points. Two violations in 3 years = disqualification.

🔍

DOT Roadside Inspections

Required Knowledge

There are 6 levels of DOT inspections. Knowing what each covers helps you stay ready and avoid out-of-service orders.

Level	Type	What’s checked
Level I	Full Inspection	Driver documents, ELD/logs, vehicle components, cargo securement, hazmat. Most thorough — takes 45–90 mins.
Level II	Walk-Around	Same as Level I but inspector does not go under the vehicle.
Level III	Driver-Only	CDL, medical cert, HOS logs, seatbelt, alcohol/drug. No vehicle check.
Level IV	Special Study	One-time data collection for FMCSA research. Usually just a few targeted items.
Level V	Vehicle-Only	Full vehicle inspection without driver present (e.g., at terminal). No driver documents checked.
Level VI	Radioactive	Enhanced inspection for vehicles transporting highway route controlled quantities of radioactive material.

Pre-Trip Inspection Checklist

Engine compartment — oil level, coolant, power steering fluid, belts, hoses, leaks
Tires — tread depth (4/32″ steer axle, 2/32″ others), inflation, sidewall condition, lug nuts tight
Brakes — air pressure builds to 90–100 psi, no audible leaks, brake adjustment, slack adjusters
Lights & reflectors — headlights, brake lights, turn signals, marker lights, reflective tape
Coupling devices — kingpin, fifth wheel locked, safety chains, trailer electrical connected
Cargo — doors latched, load securement straps/chains, weight distribution, no overhangs unmarked
Cab interior — mirrors adjusted, wipers, horn, gauges, seatbelt, fire extinguisher, triangles/flares
Documents in cab — CDL, medical cert, registration, IFTA decals, cab card, ELD functioning

🚨 Out-of-Service Criteria You can be placed out of service (OOS) for: brake defects, tire blowouts, lights out, HOS violations, no valid medical cert, blood alcohol 0.04%+, or being ill/fatigued. OOS stays on your record and impacts your carrier’s CSA score.

💊

Drug & Alcohol Testing (CFR Part 382)

Required Knowledge

Pre-Employment

Before You Drive

Drug test required before a CDL driver first performs a safety-sensitive function for a new employer. Negative result required.

Random

Random Testing

Minimum 50% of drivers for drugs, 10% for alcohol annually. Selection is truly random — you can be pulled at any time with no notice.

Post-Accident

After a Crash

Required if: fatality, driver cited + injury requiring medical treatment, or driver cited + vehicle towed. Drug test within 32 hrs, alcohol within 8 hrs.

Reasonable Suspicion

Supervisor Observation

Supervisor trained in detection can require a test based on specific observations of appearance, behavior, speech, or smell.

Return-to-Duty

After a Violation

Negative drug/alcohol test required before returning to safety-sensitive functions after a violation. Follow-up testing required for up to 5 years.

Clearinghouse

FMCSA Clearinghouse

Federal database of drug/alcohol violations. Employers must query it before hiring. All violations are reported and visible to future employers for 5 years.

Substance	Cut-off Level	Consequence
Marijuana (THC)	50 ng/mL initial / 15 ng/mL confirm	Immediate removal from safety-sensitive duties. Return-to-duty process required.
Cocaine	300 ng/mL initial / 150 ng/mL confirm	Immediate removal. RTD process + minimum 6 follow-up tests in 12 months.
Amphetamines	500 ng/mL initial / 250 ng/mL confirm	Same as above. Includes methamphetamine and MDMA.
Opioids	2000 ng/mL initial / 2000 ng/mL confirm	Same as above. Includes heroin, oxycodone, hydrocodone.
PCP	25 ng/mL initial / 25 ng/mL confirm	Same as above.
Alcohol	BAC 0.04% on duty / 0.02% = removal	0.02–0.039%: off duty 24 hrs. 0.04%+: immediate RTD process.

⚠ CBD and Marijuana — Important Notice Federal DOT testing looks for THC metabolites regardless of state law. Using CBD products, hemp-based items, or marijuana (even medicinally, even in a legal state) can trigger a positive test. There is no “legal CBD” defense in a DOT drug test.

🏗

CDL Requirements & Classes

Know Your License

CDL Class	Vehicle Type	GVWR Requirement
Class A	Combination vehicles (semi-truck + trailer)	GCWR 26,001+ lbs with towed vehicle over 10,000 lbs. Can operate Class B & C with endorsements.
Class B	Single heavy vehicles (straight truck, bus)	GVWR 26,001+ lbs, or towing vehicle under 10,000 lbs. Can operate Class C with endorsements.
Class C	Smaller vehicles transporting hazmat or 16+ passengers	GVWR under 26,001 lbs but carries hazmat or 16+ passengers including driver.

Endorsements

Endorsement H

Hazardous Materials

Required for transporting hazmat. Requires TSA background check and written knowledge test. Must be renewed every 5 years.

Endorsement N

Tank Vehicles

Required for operating a tank vehicle with a GVWR of 26,001+ lbs used for transporting liquid or gaseous materials.

Endorsement T

Double/Triple Trailers

Required for pulling double or triple trailers. Requires written knowledge test. Not permitted in all states.

Endorsement P

Passenger

Required for operating a vehicle designed to transport 16+ passengers. Requires knowledge test + skills test in a passenger vehicle.

Endorsement S

School Bus

Required for driving a school bus. Requires P endorsement first, plus additional background checks and skills test.

Endorsement X

Hazmat + Tank

Combination of H and N endorsements. Required for tanker trucks carrying hazardous materials (fuel tankers, chemical tankers).

🏢 Medical Certificate Requirements All CDL holders operating in interstate commerce must have a valid DOT Medical Examiner’s Certificate (MEC). It must be filed with your state DMV. Certificates last up to 24 months, or shorter if you have certain medical conditions. Loss of medical cert = loss of CDL driving privileges.

CDL Disqualifications

DUI/DWI in any vehicle (CMV or personal)
Refusing a drug or alcohol test
Leaving the scene of an accident (hit and run)
Using a CMV to commit a felony
Driving a CMV while CDL is revoked or disqualified
Causing a fatality through negligent operation

Speeding 15+ mph over the limit
Reckless driving
Improper or erratic lane changes
Following too closely (tailgating)
Texting or using a hand-held device while driving
Driving a CMV without a CDL or without proper endorsements

Using a CMV in the commission of a felony involving manufacturing, distributing, or dispensing controlled substances
Second major offense (2nd DUI, 2nd felony, etc.)
Second offense of causing a fatality through negligent operation

For your Trucking Compliance Guides, the goal is to translate dense legal text from the FMCSA into actionable checklists for your readers. Since we’re in 2026, several major transitions—like the retirement of MC numbers and the “National Registry II” medical system—are now part of daily life.

Here are the key factors you should cover for each section of your “Plain-English” breakdown.

1. Hours of Service (HOS) Rules

Focus on the limits that keep drivers legal. Many drivers still get confused by the “window” vs. “driving time.”

The 11-Hour Limit: Maximum driving time allowed after 10 consecutive hours off-duty.
The 14-Hour “Window”: This is the daily “clock.” Once it starts, it doesn’t stop for breaks or meals.
The 30-Minute Break: Required after 8 cumulative hours of driving. It can be “On-Duty Not Driving,” “Off-Duty,” or “Sleeper Berth.”
The 70-Hour Rule: Drivers cannot drive after 70 hours on-duty in 8 consecutive days.
The 34-Hour Restart: How a driver “resets” their weekly clock.

2. FMCSA Regulations: The 2026 “New Normal”

Explain the shift from old identifiers to the modern digital system.

USDOT Only (No more MC Numbers): As of late 2025/early 2026, MC numbers have been retired. Drivers must ensure only their USDOT number is displayed and used on paperwork.
Electronic DVIRs (eDVIR): It is now explicitly legal and encouraged to use digital pre-trip and post-trip inspections. You must explain that these need to be stored for 3 months and producible during an audit.
ELD Device Registry: Remind drivers to check the FMCSA list. Several older devices (like PSS and Black Bear) were removed in early 2026 and are no longer legal to use.

3. DOT Inspections (Roadside Survival)

Categorize these by “Level” so drivers know what to expect when they are pulled behind the scale.

Level 1 (The Full Monty): A 37-step inspection of both the driver and the entire vehicle (including the undercarriage).
Level 2 (Walk-Around): Similar to Level 1, but the inspector stays above the truck (no crawling underneath).
Level 3 (Driver Only): Focuses strictly on credentials: CDL, Medical Card, ELD logs, and seatbelt use.
The “Top 3” Violations to Avoid: 1. Brakes: (Leading cause of out-of-service orders). 2. Tires: (Tread depth and inflation). 3. Lights: (The easiest “fix” to prevent a pull-over).

4. CDL & Clearinghouse Requirements

This is about “Driver Fitness” and keeping that license active.

The Clearinghouse II (DACH): As of late 2024/2025, the Clearinghouse is now tied directly to State Driver Licensing Agencies (SDLAs). If a driver has a “Prohibited” status in the Clearinghouse, their CDL is automatically downgraded by the state within 60 days.
Medical Self-Certification: Drivers must ensure their state has their current medical card on file. In 2026, this is mostly electronic, but checking the “Driver Portal” is a monthly necessity.
Non-Domiciled CDL Changes: For drivers on specific visas (H-2A, H-2B), their CDLs are now limited to 1 year and must say “Non-Domiciled” on the face of the card.