What is the most effective method of acceleration in a truck?
Explanation
Correct answer: Change gears so that engine speed does not fall below the start of the green band on the rev counter.
The green band on a lorry's rev counter indicates the range in which the engine operates most efficiently, developing high torque with optimal fuel consumption. The correct technique for accelerating involves changing to higher gears in such a way that the engine speed remains within this range after each gearchange. This ensures both dynamic performance and fuel economy, which is crucial in heavy goods transport.