Eco-safe driving techniques reduce vehicle emissions and optimise fuel efficiency through specific physical and mechanical mechanisms. Match each eco-safe driving technique on the left with its primary fuel-saving mechanism on the right.
- Practising 'block gear changing' (such as shifting directly from second to fourth gear)Reduces the time spent accelerating through lower gears and limits unnecessary engine revving cycles
- Switching off heated screens and air conditioning once the cabin is demisted and comfortableRelieves parasitic electrical load from the alternator, reducing engine workload
- Looking well ahead and easing off the accelerator early rather than braking late before junctionsPreserves vehicle momentum and avoids converting kinetic energy into wasted brake heat
- Maintaining a steady cruising speed of 60 mph rather than 70 mph on a clear dual carriagewaySignificantly lowers aerodynamic drag resistance, which rises rapidly at higher road speeds
Answer
Block gear changing matches with reducing time spent accelerating through lower gears; switching off heated screens/air conditioning matches with relieving parasitic alternator load; easing off the accelerator early matches with preserving momentum and avoiding wasted brake heat; cruising at 60 mph rather than 70 mph matches with significantly lowering aerodynamic drag resistance.
Each eco-driving habit targets a specific source of energy expenditure: block gear changes shorten high-RPM acceleration periods; disabling high-draw electrical accessories reduces engine load via the alternator; early deceleration preserves kinetic energy and prevents waste via the brakes; and moderating motorway cruising speeds counteracts steep exponential increases in aerodynamic drag.
Step-by-Step Solution
Key Concept
Eco-safe driving encompasses techniques that optimise transmission usage, minimise parasitic electrical drains, conserve kinetic energy, and overcome high aerodynamic resistance.
Estimated Time:1m 15s