Shifting
What the exam tests
Shifting questions test progressive shifting, clutch use, and matching engine speed to road speed. The exam expects you to know how to shift without lugging, over-revving, or coasting.
Core rules
- Use progressive shifting: shift up at low RPM and use the highest gear that maintains speed.
- Double clutch: clutch in, shift to neutral, clutch out, clutch in, shift to gear, clutch out.
- Do not lug the engine; downshift before RPM falls too low.
- Do not coast in neutral; you lose engine braking and control.
- Select the right gear before a downgrade, not on it.
Worked example
A loaded tractor-trailer approaches a 6% downgrade at 55 mph. The driver selects a lower gear before the crest so engine braking holds speed without riding the brakes. Waiting until the descent begins risks overheating the brakes and losing stopping power. The reasoning is that engine braking is most effective when the drivetrain is already engaged in the correct gear.
Traps that cost marks
- Floating gears; the skills test expects double clutching.
- Shifting in a curve or on railroad tracks, where you need both hands and control.
- Over-revving an engine and damaging it.
- Coasting downhill in neutral, which is dangerous and often illegal.
Exam tip
If a question asks when to shift, the safe answer is usually before the hazard, not during it.