DVSA Environmental Awareness 3

Question 1

What is the main source of noise pollution from vehicles?

Accepted Answer

Engine noise, tyre noise, and exhaust noise

Answer

Vehicle noise pollution comes primarily from the engine, tyres rolling on the road surface (especially at speed), and the exhaust system. Excessive noise from modified exhausts is illegal.

Question 2

How can you reduce your vehicle's contribution to air pollution in built-up areas?

Accepted Answer

Avoid unnecessary journeys, walk or cycle for short trips, and keep your vehicle well maintained

Answer

Reduce pollution by avoiding unnecessary car journeys, walking or cycling for short trips, using public transport, car-sharing, and keeping your vehicle well maintained with regular servicing.

Question 3

What happens if your vehicle fails the MOT emissions test?

Accepted Answer

The vehicle fails its MOT and cannot be driven on public roads until the fault is repaired and a new test is passed

Answer

If your vehicle fails the MOT emissions test, it fails the overall MOT and is not roadworthy. You must have the fault repaired and pass a retest before driving on public roads (except to a pre-booked repair).

Question 4

What is regenerative braking in hybrid and electric vehicles?

Accepted Answer

A system that recovers energy during braking and converts it back into electrical energy to charge the battery

Answer

Regenerative braking captures the kinetic energy that would otherwise be lost as heat during braking and converts it into electrical energy to recharge the vehicle's battery, extending range.

Question 5

Why should you plan your journeys carefully to reduce environmental impact?

Accepted Answer

Combining trips, avoiding peak traffic, and choosing efficient routes reduces fuel consumption and emissions

Answer

Planning journeys reduces unnecessary mileage, avoids traffic congestion (where fuel is wasted idling), and allows you to combine multiple errands into one trip. Cold starts also use more fuel, so fewer trips help.

DVSA UK Driving Theory Practice Test

DVSA UK Driving Theory Practice Test

DVSA Environmental Awareness 3