Environmental and Economic Driving
Environmental and economic driving questions test エコドライブ as a safe driving style, not a separate gimmick. The same smooth inputs that cut fuel also cut passenger falls and brake wear.
Core techniques
- Accelerate gently and steadily; avoid racing the engine.
- Release the accelerator early and use engine braking; anticipate stops.
- Use idling stop at signals, stops, and depots where the vehicle and route permit; do not idle for long periods.
- Check tyre pressure cold; under-inflation raises fuel use and heat.
- Use air conditioning deliberately; pre-cool at the depot rather than idling with the doors open.
- Plan the route and load; unnecessary weight and detours cost fuel.
Worked example
A bus waits at a long signal with the doors closed. The driver selects neutral, applies the parking brake, and stops the engine. Reasoning: the wait is long and stationary; idling stop saves fuel and reduces emissions without affecting safety. The driver restarts only when the signal changes and traffic is clear.
Traps
- Coasting in neutral to “save fuel” - unsafe and not エコドライブ.
- Long idling with the engine running “for the air conditioner”.
- Hard acceleration to make up time; it raises fuel use and passenger-fall risk.
- Ignoring tyre pressure or carrying unnecessary weight.
Exam tip
If an option saves fuel but reduces control, it is wrong. Eco-driving is measured by smoothness, anticipation, and idling discipline.