ADI Vehicle Safety & Mechanics 2

Question 1

What is the purpose of the MOT test in the UK?

Accepted Answer

To check that the vehicle meets minimum roadworthiness standards required by law

Answer

To assess the driver's competence annually

Answer

To verify the vehicle's insurance

Answer

To confirm the vehicle's ULEZ compliance

Question 2

How does aquaplaning occur and how should a driver respond?

Accepted Answer

A film of water lifts the tyres off the road; ease off the accelerator and avoid harsh inputs until the tyres regain contact

Answer

The car skids on ice; brake firmly and steer into the skid

Answer

The car oversteers; apply full brakes

Answer

The car understeers due to high speed; apply full brakes immediately

Question 3

A catalytic converter reduces which emissions from a petrol engine?

Accepted Answer

Carbon monoxide (CO), hydrocarbons (HC) and nitrogen oxides (NOx)

Answer

CO₂ only

Answer

Particulate matter only

Answer

CO₂ and water vapour

Question 4

Which action should a driver take when a front-right tyre blows out at speed on a motorway?

Accepted Answer

Hold the steering wheel firmly, ease off the accelerator gradually and steer to the left to stop on the hard shoulder

Answer

Brake hard immediately

Answer

Steer sharply left

Answer

Accelerate to maintain control

Question 5

What does a red battery warning light indicate while driving?

Accepted Answer

The charging system has failed and the battery is discharging — the car may soon lose electrical power

Answer

The battery is nearly empty — charge it tonight

Answer

The battery just needs topping up with water

Answer

The vehicle requires a software update

Question 6

What is the effect of carrying excessive weight on a vehicle beyond its maximum payload?

Accepted Answer

Increased stopping distances, altered handling, tyre damage and potential MOT failure

Answer

Improved braking due to greater traction

Answer

No effect on safety if speed is reduced

Answer

Better road holding due to lower centre of gravity