1 · Brake system
Service brakes — condition and adjustment
Parking brake system
Brake drums or rotors
Brake hose
Brake tubing
Low pressure warning device
Tractor protection valve
Air compressor
Electric brakes
Hydraulic brakes
Vacuum system
2 · Coupling devices
Fifth wheels
Pintle hooks
Drawbar / towbar eye
Drawbar / towbar tongue
Safety devices — chains, cables
Saddle-mounts
3 · Exhaust system
No leak beneath cab or sleeper
Discharge clear of fuel system, tires
System securely fastened
4 · Fuel system
Tank securely attached
No leak at any point
Fuel cap present and sealing
5 · Lighting devices
Headlamps
Tail lamps
Stop lamps
Turn signals, hazard warning
Clearance, side marker, ID lamps
Reflectors, reflective sheeting
License plate lamp
6 · Safe loading
Cargo secured against shifting
No condition likely to shift the load
7 · Steering mechanism
Steering wheel free play
Steering column
Front axle beam, steering components
Steering gear box
Pitman arm
Power steering — pump, hoses, fluid
Ball and socket joints
Tie rods and drag links
Nuts on the steering system
No modification or welding repair
8 · Suspension
U-bolts, hangers, axle positioning parts
Spring assembly
Torque, radius, tracking components
9 · Frame
Frame members
Tire and wheel clearance
Adjustable axle — locking pins engaged
10 · Tires
Tread depth — steering axle
Tread depth — all other axles
No ply or belt exposed, no audible leak
Inflation and load within rating
11 · Wheels and rims
Lock or side ring
No crack or unseated lock ring
Fasteners — none loose, missing, damaged
No unauthorized welding repair
12–13 · Windshield
Glazing — swept area clear of damage
Wipers operative, no missing parts
14 · Rear impact guard
Guard present where required
Dimensions, mounting and condition
15 · Motorcoach / bus — if applicable
Passenger seats fastened to structure