Operating Truck, Semi-Trailer
- 1/20If you start your trip with a semi-trailer
Confirm kingpin and fifth wheel are locked, safety latches secured, and airlines/electrical lines are connected.
When driving with a loaded semi-trailer
Gradually increase speed to avoid jackknifing or trailer sway.
If approaching a sharp curve
Slow down before turning; sudden braking in curves can cause rollover.
When changing lanes with a semi-trailer
Signal well in advance and check blind spots; trailers have extended blind zones.
If driving downhill with heavy load
Shift to a lower gear before descent to avoid overheating service brakes.
When parking a semi-trailer
Always secure trailer to prevent rolling.
If maneuvering in tight areas
Swing wider to avoid trailer tires clipping curbs or obstacles.
When coupling trailer to tractor
Gently pull forward to ensure secure connection before driving.
If uncoupling trailer
Avoid trailer drop by ensuring landing gear supports weight.
When reversing with semi-trailer
Small steering inputs prevent overcorrection; use a spotter when possible.
If crossing high wind areas
High winds can push trailers; maintain firm grip and adjust for gusts.
When driving on slippery roads
Smooth control prevents skids and loss of traction.
If trailer begins to jackknife
Straighten steering and regain control gradually.
When hauling oversized load
Obtain required permits, use warning flags/lights, and follow escort vehicle instructions.
If trailer brakes fail
Gradually reduce speed using lower gears and safe stopping areas.
When stopping on an incline
Prevent rollback by using parking brake before releasing foot brake.
If transporting dangerous goods
Display hazard placards, carry documentation, and follow special route restrictions.
When driving long distances
Saudi law requires drivers to manage fatigue with rest periods.
If trailer load is uneven
Uneven loads affect stability and increase rollover risk.
When inspecting after trip
Inspect brakes, tires, couplings, and note defects in report.