What is the most effective way of speeding up a bus?

Explanation

Correct answer: By changing gears in such a way that the RPM of the engine is not lower than the starting value of the green area on the tachometer.

The green area on the rev counter indicates the most economical engine operating range, in which the vehicle consumes the least fuel in relation to the power produced. Maintaining the engine speed within this range during acceleration and gear changes is a key principle of so-called eco-driving. Such a driving technique allows for smooth acceleration while simultaneously reducing fuel consumption and exhaust emissions.

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