Question

what can we do to reduce noise of the vehicle and save petrol and diesel

Answer 1

We can reduce the noise of vehicles

Few vehicles such as the bullet bikes makes a very loud noise. Such vehicles shouldn't be encouraged.

While driving people should avoid playing loud music and using the horn unnecessarily.

We can conserve fossil fuels such as petrol and diesel.

Keeping in mind the limitations of fuels the need of the hour is to conserve them to the extent.

Judicious use of existing resources

Use of alternative sources of energy like tidal power, wind energy, etc., to meet our fuel and energy needs.