Compare a part between two dates
Pick a part and two dates. Every section whose wording changed in between is listed with a link to the exact diff. Built for the deposition question "has this rule changed since the crash?"
Part 393 — Parts and Accessories Necessary for Safe Operation
Between March 21, 2017 and today (current through Oct. 22, 2026): 31 amended, 0 added, 0 removed, 59 unchanged.
- Amended§ 393.5 Definitions.View diffChanged 5 times: Nov. 9, 2021; Dec. 9, 2021; March 7, 2022; May 6, 2022; Nov. 18, 2024
- Amended§ 393.11 Lamps and reflective devices.View diffChanged March 23, 2026
- Amended§ 393.42 Brakes required on all wheels.View diffChanged 2 times: Feb. 19, 2026; March 23, 2026
- Amended§ 393.45 Brake tubing and hoses; hose assemblies and end fittings.View diffChanged July 21, 2026
- Amended§ 393.47 Brake actuators, slack adjusters, linings/pads and drums/rotors.View diffChanged Oct. 14, 2021
- Amended§ 393.60 Glazing in specified openings.View diffChanged 5 times: May 17, 2018; June 18, 2018; March 7, 2022; May 6, 2022; May 9, 2022
- Amended§ 393.65 All fuel systems.View diffChanged 2 times: Feb. 19, 2026; March 23, 2026
- Amended§ 393.67 Liquid fuel tanks.View diffChanged 2 times: Feb. 19, 2026; March 23, 2026
- Amended§ 393.71 Coupling devices and towing methods, driveaway-towaway operations.View diffChanged Oct. 14, 2021
- Amended§ 393.75 Tires.View diffChanged 2 times: Feb. 19, 2026; March 23, 2026
- Amended§ 393.86 Rear impact guards and rear end protection.View diffChanged 4 times: Nov. 9, 2021; Dec. 9, 2021; Feb. 19, 2026; March 23, 2026
- Amended§ 393.95 Emergency equipment on all power units.View diffChanged 3 times: Feb. 19, 2026; March 23, 2026; April 20, 2026
- Amended§ 393.100 Applicability and general requirements of cargo securement standards.View diffChanged Nov. 18, 2024
- Amended§ 393.102 Minimum performance criteria for cargo securement devices and systems.View diffChanged Nov. 18, 2024
- Amended§ 393.104 Standards for cargo securement devices and systems.View diffChanged Nov. 18, 2024
- Amended§ 393.106 General requirements for securing articles of cargo.View diffChanged Nov. 18, 2024
- Amended§ 393.108 Determining the working load limit of a tiedown or the load restraining value of a friction mat.View diffChanged Nov. 18, 2024
- Amended§ 393.110 Additional requirements for determining the minimum number of tiedowns.View diffChanged Nov. 18, 2024
- Amended§ 393.112 Adjustability of tiedowns.View diffChanged Nov. 18, 2024
- Amended§ 393.114 Requirements for front end structures used as part of a cargo securement system.View diffChanged Nov. 18, 2024
- Amended§ 393.116 Specific securement requirements for logs.View diffChanged Nov. 18, 2024
- Amended§ 393.118 Specific securement requirements for dressed lumber and similar building products.View diffChanged Nov. 18, 2024
- Amended§ 393.120 Specific securement requirements for metal coils.View diffChanged Nov. 18, 2024
- Amended§ 393.122 Specific securement requirements for paper rolls.View diffChanged Nov. 18, 2024
- Amended§ 393.124 Specific securement requirements for concrete pipe.View diffChanged Nov. 18, 2024
- Amended§ 393.126 Specific securement requirements for intermodal containers.View diffChanged Nov. 18, 2024
- Amended§ 393.128 Specific securement requirements for automobiles, light trucks, and vans.View diffChanged Nov. 18, 2024
- Amended§ 393.130 Specific securement requirements for heavy vehicles, equipment, and machinery.View diffChanged Nov. 18, 2024
- Amended§ 393.132 Specific securement requirements for flattened or crushed vehicles.View diffChanged Nov. 18, 2024
- Amended§ 393.134 Specific securement requirements for roll-on/roll-off and hook lift containers.View diffChanged Nov. 18, 2024
- Amended§ 393.136 Specific securement requirements for large boulders.View diffChanged Nov. 18, 2024
Unchanged (59)
- § 393.1 Scope of the rules in this part.
- § 393.3 Additional equipment and accessories.
- § 393.7 Matter incorporated by reference.
- § 393.9 Lamps operable, prohibition of obstructions of lamps and reflectors.
- § 393.13 Retroreflective sheeting and reflex reflectors, requirements for semitrailers and trailers manufactured before December 1, 1993.
- § 393.17 Lamps and reflectors—combinations in driveaway-towaway operation.
- § 393.19 Hazard warning signals.
- § 393.20 [Reserved]
- § 393.22 Combination of lighting devices and reflectors.
- § 393.23 Power supply for lamps.
- § 393.24 Requirements for head lamps, auxiliary driving lamps and front fog lamps.
- § 393.25 Requirements for lamps other than head lamps.
- § 393.26 Requirements for reflectors.
- § 393.27 [Reserved]
- § 393.28 Wiring systems.
- § 393.29 [Reserved]
- § 393.30 Battery installation.
- § 393.31-393.33 [Reserved]
- § 393.40 Required brake systems.
- § 393.41 Parking brake system.
- § 393.43 Breakaway and emergency braking.
- § 393.44 Front brake lines, protection.
- § 393.46 [Reserved]
- § 393.48 Brakes to be operative.
- § 393.49 Control valves for brakes.
- § 393.50 Reservoirs required.
- § 393.51 Warning signals, air pressure and vacuum gauges.
- § 393.52 Brake performance.
- § 393.53 Automatic brake adjusters and brake adjustment indicators.
- § 393.55 Antilock brake systems.
- § 393.61 Truck and truck tractor window construction.
- § 393.62 Emergency exits for buses.
- § 393.63 [Reserved]
- § 393.68 Compressed natural gas fuel containers.
- § 393.69 Liquefied petroleum gas systems.
- § 393.70 Coupling devices and towing methods, except for driveaway-towaway operations.
- § 393.76 Sleeper berths.
- § 393.77 Heaters.
- § 393.78 Windshield wiping and washing systems.
- § 393.79 Windshield defrosting and defogging systems.
- § 393.80 Rear-vision mirrors.
- § 393.81 Horn.
- § 393.82 Speedometer.
- § 393.83 Exhaust systems.
- § 393.84 Floors.
- § 393.85 [Reserved]
- § 393.87 Warning flags on projecting loads.
- § 393.88 Television receivers.
- § 393.89 Buses, driveshaft protection.
- § 393.90 Buses, standee line or bar.
- § 393.91 Buses, aisle seats prohibited.
- § 393.92 [Reserved]
- § 393.93 Seats, seat belt assemblies, and seat belt assembly anchorages.
- § 393.94 Interior noise levels in power units.
- § 393.201 Frames.
- § 393.203 Cab and body components.
- § 393.205 Wheels.
- § 393.207 Suspension systems.
- § 393.209 Steering wheel systems.