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Slide 1
Parts and Accessories

Slide 2
Lights

Please visit the following link to view a chart that specifies the required color, position and
types of lamps and reflectors for CMVs:
http://www.fmcsa.dot.gov/rulesregs/fmcsr/regs/393.11.htm

Slide 3
Lights

  • All required lamps must be able to light at all times.
  • All lamps must be securely mounted on a permanent part of the vehicle

Slide 4
Brakes On All Wheels

Every CMV must be equipped with brakes acting on all wheels, except:

  • Trucks and truck tractors manufactured before July 25, 1980
  • Vehicles being towed away
  • Any full trailer, semi trailer or pole trailer having a gross weight of 3,000 lbs. or less

Slide 5
Brakes

Commercial motor vehicles must be equipped with the following brake systems:

  • A service brake system that specifies braking and holding performance
  • A parking brake system that specifies parking brake activation and the method for holding the brakes in the applied position

Slide 6
Breakaway and Emergency Braking

Every vehicle used to tow a trailer equipped with brakes must have a means of maintaining
the operation of the brakes on the towing vehicle in the event that the trailer breaks
away from the towing vehicle.

Slide 7
Brake Warning Devices

Buses, tractors and trucks must be equipped with a signal that provides a warning to the
driver when a failure occurs in the vehicle's service brake system.

Slide 8
Antilock Braking Systems

The following CMVs are required to be equipped with antilock braking systems:

  • Truck-tractors manufactured after March 1, 1997
  • Air-braked single unit trucks, buses and trailers manufactured on or after March 1, 1998
  • Hydraulic-braked trucks and buses manufactured on or after March 1999

Slide 9
Windshield Condition

A vehicle's windshield must be free of discoloration and cracks in the area extending
from the top of the steering wheel to within two inches to the top of of the windshield.

Slide 10
Fuel Systems

Each fuel system must be located so that:

  • No part of the system extends beyond the widest parts of the vehicle
  • No part of a fuel tank is forward of the front axle or a power unit

Slide 11
Fuel Systems

  • Fuel lines do not extend between a towed vehicle and the towing unit while the combination is in motion
  • No part of the fuel system of a bus manufactured on or after January 1, 1973 is located within or above the passenger compartment

Slide 12
Cargo Security

Cargo is required to be loaded and secured so that it will not shift or fall off the vehicle.

Slide 13
Tires

No tire on a CMV may have any of the following defects:

  • Body ply or belt material exposed through tread or sidewall
  • Tread or sidewall separation
  • Audible leak (or flat)
  • A cut exposing the ply or belt material

Slide 14
Tires

  • A tread groove pattern depth of less than 4/32 of an inch (front tires) or 2/32 of an inch (other tires)
  • Regrooved tires on front wheels of trucks or truck tractors
  • Regrooved, recapped or retreaded tires on the front wheels of buses

Slide 15
Sleeper Berths

  • Must not be installed on a trailer and must be located in or adjacent to the cab
  • Must be equipped with adequate sheets and blankets and a mattress and springs (or innerspring mattress)
  • Must be adequately ventilated

Slide 16
Exhaust Systems

  • Must be located where it is not likely to burn or damage the electrical wiring, fuel supply, or any combustible part of the vehicle
  • Discharge from the exhaust system must not be located immediately below the fuel tank or filler pipe

Slide 17
Exhaust Systems

  • May not leak or discharge at any point forward of or directly below the driver or sleeper compartment
  • May not be temporarily repaired with patch or wrap material
  • Pipe and mufflers must be securely fastened to the vehicle

Slide 18
Rear End Protection

  • Every CMV must be equipped with bumpers or other devices that prevent the under ride of another vehicle

Slide 19
Seat Belts

The vehicle must be equipped with seats, seat belt assemblies and seat belt anchorages as
specified in the Motor Vehicle Standards.

Slide 20
Emergency Equipment

CMVs must carry the following emergency equipment:

  • Fire extinguisher
  • Spare fuses
  • Warning devices for stopped vehicles

Slide 21
Fire Extinguisher

  • Must be securely mounted and accessible
  • Must have a gauge or indicator that shows whether the extinguisher is fully charged
  • Must have a label showing its Underwriters' Laboratories rating

Slide 22
Suspension Systems

Suspension systems are required to be structurally sound and in safe working order,
including the following:

  • Axles must be properly aligned
  • Adjustable axles must have locking pins in place

Slide 23
Suspension Systems

  • Leaf springs must not be cracked, broken, missing or shifted out of position
  • Coil springs must not be cracked or broken
  • Torsion bars must not be cracked or broken
  • Air suspensions must support the vehicle in a level position and must not leak

Slide 24
Steering System

Steering system must be in proper working order:

  • Steering wheel must be properly secured
  • Steering column must be securely fastened
  • Power steering unit must not have loose or broken parts, frayed, cracked or slipping belts; leaks; or insufficient fluid

Slide 25
Steering System

  • Steering system must not have worn or welded universal joints, loose steering gear box, missing bolts or a loose pitman arm on the steering gear output shaft