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  • Introduction
  • Browse 49 CFR Part 395
  • Browse by HOS Topic
Subpart A – General
  • §395.1 Scope, Exceptions & Exemptions
  • §395.2 Definitions
  • §395.3 Property-Carrying Hours
  • §395.5 Passenger-Carrying Hours
  • §395.7 Reserved
  • §395.8 Record of Duty Status
  • §395.10 Reserved
  • §395.11 Supporting Documents
  • §395.12 Reserved
  • §395.13 Drivers Ordered OOS
  • §395.15 Automatic On-Board Recording Devices
  • §395.16–395.19 Reserved
Subpart B – ELDs
  • §395.20 ELD Applicability & Scope
  • §395.22 Motor Carrier Responsibilities
  • §395.24 Driver Responsibilities
  • §395.26 Automatically Recorded Data
  • §395.28 Special Driving Categories
  • §395.30 Edits, Annotations & Retention
  • §395.32 Non-Authenticated Logs
  • §395.34 ELD Malfunctions
  • §395.36 Driver Access to Records
  • §395.38 Incorporation by Reference
  • §Appendix A ELD Functional Specs

Need the official text?

View the official 49 CFR
Part 395 on eCFR.

View on eCFR↗

HOS Regulatory Library

Hours of Service Regulations:49 CFR Part 395

Part 395 of the Federal Motor Carrier Safety Regulations (FMCSRs) contains the federal Hours of Service (HOS) requirements for commercial motor vehicle drivers. Use this library to find an applicable regulation, read plain-language explanations, see real-world applications and examples, and connect to the official source.

Browse 49 CFR Part 395View Current 49 CFR Part 395 on eCFR
49 CFR Part 395 Hours of Service of Drivers
PRIMARY AGENCY
Federal Motor Carrier Safety Administration (FMCSA)
U.S. Department of Transportation
REGULATORY STATUS
Verify the current regulatory text on the eCFR. Regulations can change.
HOSoptima REVIEW
Last regulatory review September 1, 2026
OFFICIAL SOURCE
eCFR is the authoritative but unofficial online edition of the CFR. The CFR is the official legal print publication.

Browse 49 CFR Part 395

Subpart A – General

General HOS rules, definitions, duty status, records, supporting documents and more.

  • §395.1 Scope, Exceptions & Exemptions
  • §395.2 Definitions
  • §395.3 Maximum Driving Time – Property-Carrying
  • §395.5 Maximum Driving Time – Passenger-Carrying
  • §395.7 Reserved
  • §395.8 Driver's Record of Duty Status
View all in Subpart A→

Subpart B – Electronic Logging Devices

ELD requirements, data, edits, malfunctions, driver and motor carrier responsibilities.

  • §395.20 ELD Applicability & Scope
  • §395.22 Motor Carrier Responsibilities
  • §395.24 Driver Responsibilities
  • §395.26 Automatically Recorded ELD Data
  • §395.28 Special Driving Categories
  • §395.30 Edits, Annotations & Retention
View all in Subpart B→

Browse by HOS Topic

Driving Time Limits11-hour limit, 14-hour window, and related requirements.Rest Requirements10-hour break, sleeper berth, split breaks and rest provisions.Break Requirements30-minute break requirements and qualifying periods.60/70-Hour LimitOn-duty limits across 7 or 8 consecutive days.34-Hour RestartRestarting the 60/70-hour calculation.Short-HaulCDL and non-CDL short-haul exceptions.Exceptions & ExemptionsOther exceptions and special provisions.Adverse ConditionsAdverse driving conditions exception.Personal ConveyanceUsing a CMV for personal use.Yard MoveMoving a CMV within a yard or on private property.Records & LogsRODS, documents, and record retention.ELD RequirementsELD use, data, malfunctions, and more.

Why accurate HOS understanding matters

HOS rules exist to reduce fatigue-related risk. Accurate understanding helps drivers stay within the law, supports safe operations and protects the public.

Explore HOS Examples →

Regulatory Methodology

HOSoptima provides plain-language explanations, real-world applications and examples to help readers understand how the regulations work in practice.

  • We explain the rule.
  • We show how it applies.
  • We highlight common misunderstandings.
  • We connect you to the official source.

Official HOS Resources

  • eCFR – Title 49, Part 395The current regulatory text (authoritative but unofficial online edition).↗
  • FMCSA – Hours of ServiceOfficial FMCSA HOS information and guidance.↗
  • Federal Register – Final Rule (June 1, 2020)Updates to the HOS regulations.↗
  • FMCSA Driver's Guide to HOSPlain-language guidance for property and passenger carriers.↗
  • FMCSA HOS ExamplesDetailed, real-world HOS scenarios.↗

Regulatory Review &
Disclaimer

HOSoptima reviews regulatory content regularly. Last review: September 2026.

This library is an educational resource and is not a substitute for applicable laws, regulations, official agency guidance or professional legal advice. When there is a difference between an educational explanation and an applicable regulation, the applicable regulation controls.

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