Question

What can we to reduce the noise of the vehicle and save petrol and diesel?​

Answer 1

One way is to switch off the engines of vehicles when waiting for a signal or level crossing. Doing regular check-ups and servicing the vehicles will reduce noise of the vehicle and even save fuel.

Answer 2

Answer:

While driving people should avoid playing loud music and using the horn unnecessarily. We can conserve fossil fuels such as petrol and diesel. ... Use of alternative sources of energy like tidal power, wind energy, etc., to meet our fuel and energy needs.