LGV Driving in Adverse Weather Conditions 3

Question 1

In which situation are drum brakes most likely to suffer fade on an LGV?

Accepted Answer

After the vehicle has driven through deep standing water

Answer

Drum brakes can lose effectiveness after being submerged in deep water as the water reduces friction between the brake drum and linings until they dry out.

Question 2

Why should an LGV driver still exercise extra caution on a recently gritted road?

Accepted Answer

Grit reduces but does not eliminate the risk of ice

Answer

Grit improves grip but does not guarantee the road is free of ice, so LGV drivers must continue to drive with caution even on treated surfaces.

Question 3

How does driving in dense fog typically affect an LGV driver's perception of speed and distance?

Accepted Answer

Objects appear closer and speed feels slower than it actually is

Answer

Fog can make objects appear closer and cause drivers to underestimate their actual speed, which is a common cause of serious accidents in foggy conditions.

Question 4

What additional hazard does an LGV face when braking hard on a road surface with patches of ice?

Accepted Answer

Trailer swing or jackknifing as wheels lock on different surfaces

Answer

When braking on patchy ice, wheels on different surfaces can lock independently, causing the trailer to swing out or the combination to jackknife.

Question 5

Which combination of actions best describes safe LGV driving in heavy snow?

Accepted Answer

Drive slowly, use low gears, and allow greatly increased stopping distances

Answer

Safe driving in heavy snow requires driving slowly, selecting low gears for control, and leaving greatly increased stopping distances to compensate for reduced grip.

UK LGV Theory Practice Test

UK LGV Theory Practice Test

LGV Driving in Adverse Weather Conditions 3