Interpretations Browser
- § 393.11
Lamps and reflective devices. - § 393.17
Lamps and reflectors—combinations in driveaway-towaway operation. - § 393.24
Requirements for head lamps, auxiliary driving lamps and front fog lamps. - § 393.25
Requirements for lamps other than head lamps. - § 393.28
Wiring systems. - § 393.40
Required brake systems. - § 393.41
Parking brake system. - § 393.42
Brakes required on all wheels. - § 393.43
Breakaway and emergency braking. - § 393.44
Front brake lines, protection. - § 393.48
Brakes to be operative. - § 393.51
Warning signals, air pressure and vacuum gauges. - § 393.52
Brake performance. - § 393.60
Glazing in specified openings. - § 393.61
Truck and truck tractor window construction. - § 393.62
Emergency exits for buses. - § 393.65
All fuel systems. - § 393.67
Liquid fuel tanks. - § 393.70
Coupling devices and towing methods, except for driveaway-towaway operations. - § 393.71
Coupling devices and towing methods, driveaway-towaway operations. - § 393.75
Tires. - § 393.76
Sleeper berths. - § 393.81
Horn. - § 393.82
Speedometer. - § 393.83
Exhaust systems. - § 393.87
Warning flags on projecting loads. - § 393.88
Television receivers. - § 393.89
Buses, driveshaft protection. - § 393.92
- § 393.93
Seats, seat belt assemblies, and seat belt assembly anchorages. - § 393.100
Which types of commercial motor vehicles are subject to the cargo securement standards of this subpart, and what general requirements apply? - § 393.102
What are the minimum performance criteria for cargo securement devices and systems? - § 393.106
What are the general requirements for securing articles of cargo? - § 393.201
Frames.
Part 393
Question 1: Is a contractor-operated school bus operating in interstate commerce required to have emergency lights over the exit door?
Guidance: Yes. Any bus used in interstate commerce for other than school bus operations, as defined in §390.5, is subject to the Federal Motor Carrier Safety Regulations (FMCSRs).