Ireland Driving Test 26

Question 1

Under what circumstances should a driver increase the air pressure in the tyres before undertaking a long journey?

Accepted Answer

Never.

Answer

Drivers should never increase the air pressure in their tyres beyond the manufacturer's specified recommendations, even for long journeys or high speeds. Over-inflating tyres can reduce the contact patch with the road, leading to decreased grip, a harsher ride, uneven wear in the center of the tread, and an increased risk of a sudden blowout. Always adhere strictly to the recommended pressures for safety and performance.

Question 2

What is the effect of under-inflated tyres on a vehicle?

Accepted Answer

Impaired braking and steering.

Answer

Under-inflated tyres compromise the vehicle's contact with the road, leading to reduced grip and stability. This directly results in impaired braking performance, significantly increasing stopping distances, and less responsive steering, making the vehicle harder to control. These factors collectively increase the risk of accidents and reduce overall driving safety.

Question 3

What effect would coasting have on a vehicle’s tyres?

Accepted Answer

No effect.

Answer

Coasting, which involves driving with the clutch disengaged or in neutral, primarily affects a driver's control over the vehicle and braking efficiency. It does not inherently cause a direct physical effect on the tyres themselves, such as increased wear or changes in air pressure. Tyre wear is mainly influenced by factors like acceleration, braking, cornering forces, and proper tyre inflation.

Question 4

What should the driver do to secure the vehicle when changing a wheel?

Accepted Answer

Ensure that the vehicle cannot roll when jacked up.

Answer

When changing a wheel, the most critical safety measure is to ensure the vehicle is completely stable and cannot move or roll once it is jacked up. This prevents the vehicle from falling off the jack, which could cause serious injury or further damage. This is typically achieved by engaging the handbrake, putting the vehicle in gear (or park for automatics), and potentially using wheel chocks.

Question 5

While driving, what does a continuous vibration in the steering indicate?

Accepted Answer

The wheel balance is uneven.

Answer

A continuous vibration in the steering wheel, especially noticeable at certain speeds, is a classic indicator of uneven wheel balance. When a wheel is unbalanced, its weight is not evenly distributed around its circumference, causing it to wobble as it rotates. This vibration is then transmitted through the steering system to the driver.

RSA - Irish Driving Test Practice Test

RSA - Irish Driving Test Practice Test

Ireland Driving Test 26