Ask X3Safe Driving & Operations — FMCSA Compliance, Answered From the CFR
The rules for driving a commercial motor vehicle safely — from prohibited practices and railroad crossings to hazardous conditions and equipment use — grounded in 49 CFR Part 392.
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39 questions in this guide
49 CFR 392.4Do truckers need a medication form?49 CFR 392.10What are the railroad grade crossing stop rules under 49 CFR 392.10?49 CFR 392.1What does 49 CFR 392.1 (Scope of the rules in this part) require?49 CFR 392.10What does 49 CFR 392.10 (Railroad grade crossings; stopping required) require?49 CFR 392.11What does 49 CFR 392.11 (Railroad grade crossings; slowing down required) require?49 CFR 392.12What does 49 CFR 392.12 (Highway-rail crossings; safe clearance) require?49 CFR 392.14What does 49 CFR 392.14 (Hazardous conditions; extreme caution) require?49 CFR 392.15What does 49 CFR 392.15 (Prohibited driving status) require?49 CFR 392.16What does 49 CFR 392.16 (Use of seat belts) require?49 CFR 392.16What does 49 CFR 392.16 require for seat belt use?49 CFR 392.2What does 49 CFR 392.2 (Applicable operating rules) require?49 CFR 392.22What does 49 CFR 392.22 (Emergency signals; stopped commercial motor vehicles) require?49 CFR 392.24What does 49 CFR 392.24 (Emergency signals; flame-producing) require?49 CFR 392.25What does 49 CFR 392.25 (Flame producing devices) require?49 CFR 392.3What does 49 CFR 392.3 (Ill or fatigued operator) require?49 CFR 392.3What does 49 CFR 392.3 say about ill or fatigued operators?49 CFR 392.33What does 49 CFR 392.33 (Obscured lamps or reflective devices/material) require?49 CFR 392.4What does 49 CFR 392.4 (Drugs and other substances) require?49 CFR 392.5What does 49 CFR 392.5 (Alcohol prohibition) require?49 CFR 392.50What does 49 CFR 392.50 (Ignition of fuel; prevention) require?49 CFR 392.51What does 49 CFR 392.51 (Reserve fuel; materials of trade) require?49 CFR 392.6What does 49 CFR 392.6 (Schedules to conform with speed limits) require?49 CFR 392.60What does 49 CFR 392.60 (Unauthorized persons not to be transported) require?49 CFR 392.62What does 49 CFR 392.62 (Safe operation, buses) require?49 CFR 392.63What does 49 CFR 392.63 (Towing or pushing loaded buses) require?49 CFR 392.64What does 49 CFR 392.64 (Riding within closed commercial motor vehicles without proper exits) require?49 CFR 392.66What does 49 CFR 392.66 (Carbon monoxide; use of commercial motor vehicle when detected) require?49 CFR 392.67What does 49 CFR 392.67 (Heater, flame-producing; on commercial motor vehicle in motion) require?49 CFR 392.7What does 49 CFR 392.7 (Equipment, inspection and use) require?49 CFR 392.71What does 49 CFR 392.71 (Radar detectors; use and/or possession) require?49 CFR 392.8What does 49 CFR 392.8 (Emergency equipment, inspection and use) require?49 CFR 392.80What does 49 CFR 392.80 (Prohibition against texting) require?49 CFR 392.82What does 49 CFR 392.82 (Using a hand-held mobile telephone) require?49 CFR 392.9What does 49 CFR 392.9 (Inspection of cargo, cargo securement devices and systems) require?49 CFR 392.9aWhat does 49 CFR 392.9a (Operating authority) require?49 CFR 392.9bWhat does 49 CFR 392.9b (Prohibited transportation) require?49 CFR 392.82What does the hand-held mobile phone ban require under 49 CFR 392.82?49 CFR 392.80What does the texting-while-driving prohibition cover under 49 CFR 392.80?49 CFR 392.7What must a driver inspect before driving under 49 CFR 392.7 and 396.13?
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