Shifting Gears and Seeing Hazards
Shifting Gears and Seeing Hazards tests smooth transmission control and the scanning habits that buy reaction time. The exam links gear choice to control-especially on grades-and asks how you spot trouble early.
Shifting
Use progressive shifting: upshift near the engine's governed rpm only as needed, and do not skip gears unless the transmission and load allow it. Double-clutching is the standard non-synchronized technique: clutch, neutral, clutch, gear. Do not coast in neutral; you lose engine braking and control.
Grades
Select a gear before the downgrade, not after it. Use the same gear going down that you would use going up. Engine braking and a steady brake application are safer than riding the brakes, which can fade.
Seeing hazards
Scan 12–15 seconds ahead, check mirrors, and look for brake lights, loading zones, and school buses. Identify an escape route before you need it. Watch for road defects, standing water, and construction zones.
Worked example
You are descending a 6% grade with a loaded trailer. You downshift before the crest, hold a safe speed with engine braking, and use short brake applications if speed climbs. If you wait until the brakes smell hot, you have already lost margin. The correct choice is the gear that holds speed without constant braking.
Traps
Coasting downhill; upshifting on a grade; skipping the pre-grade downshift; and staring at the vehicle ahead instead of scanning for the next hazard.