Is it permitted to drive downhill on neutral gear?

1. It is allowed to shift to neutral gear while driving a public vehicle, a bus or a taxi downhill in a non-urban road only.
2. Correct answer: It is absolutely forbidden. the gears must always be selected and operated .
3. It is allowed to shift to neutral gear in any non-urban road which is moderately sloped, in order to save fuel.
4. It is possible to drive in neutral gear in a moderate slope, where there is no risk of brake overheating, in order to save fuel.

WhyDriving downhill in neutral is always forbidden. In gear the engine helps you brake, while in neutral the brakes overheat.