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Cambodia Heavy Vehicle Driving Test study materials
Cambodia Heavy Vehicle Driving Test study resources

Cambodia Heavy Vehicle Driving Test: Traffic Law, Signs, Signals and Road Markings

Cambodia Heavy Vehicle Driving Test · Work through your exam, one topic at a time.

All guide sections

Traffic Law, Signs, Signals and Road Markings

What this domain tests

The traffic-law, signs, signals and road-marking domain checks that you know the Cambodian Road Traffic Law in force and can read the sign and marking system at a glance - the two skills you use every minute of a practical test and every kilometre of a real run.

Core law

  • Cambodia drives on the right; you overtake on the left.
  • At a junction with no sign, signal or marking, give way to vehicles approaching from your right. A T-junction gives priority to the through road.
  • Signal before every change of direction, lane or speed; use hand signals if the indicator fails.
  • A police officer's signals override traffic lights and signs - obey the officer.
  • You must carry a licence of the correct class, the vehicle registration card, a valid technical inspection certificate and insurance, and produce them at a checkpoint.

Speed and alcohol

  • General limits commonly applied are 40 km/h in built-up areas and 80 km/h on national roads for light vehicles; heavy goods vehicles and buses run under lower limits. Any posted sign replaces the general figure.
  • The legal blood-alcohol limit is 0.05 %; for a professional heavy-vehicle driver the only defensible figure is zero.

Signs and markings

  • Red triangle: warning. Red circle: prohibition or restriction. Blue circle: mandatory instruction. Rectangle or square: information, direction, services.
  • White lines divide traffic; a solid line is not to be crossed; the stop line sits before the junction, not on it.
  • Yellow kerb lines mean no parking; chevrons and hatched areas mean keep out.

Worked example

You approach an unmarked crossroads in a loaded truck. A pickup is coming from your right at the same time. Who has right of way? The pickup - no sign gives priority, so the yield-to-the-right rule applies, and your weight gives you nothing.

Traps

Assuming size or straight-ahead travel creates priority; treating a blue circle as permission; crossing a solid centre line to pass a slow truck; forgetting the documents check.