LGV Theory Test Practice (Lorry) 2026：第3套练习测试

LGV Theory Test Practice (Lorry) 练习测试第3套（共5套）：再练25道题，附答案和解释。

商用车辆
英国
120道题
核对于2026年10月10日

第1题，共25题
In Scotland, what is the national speed limit on a dual carriageway for a goods vehicle over 7.5 tonnes?
- 60 mph
- 40 mph
- 70 mph
- 50 mph
显示答案
答案: D. 50 mph
In Scotland, the dual carriageway limit for goods vehicles over 7.5 tonnes is 50 mph.
第2题，共25题
In England and Wales, what is the national speed limit on a dual carriageway for a goods vehicle over 7.5 tonnes?
- 60 mph
- 70 mph
- 56 mph
- 50 mph
显示答案
答案: A. 60 mph
In England and Wales, the dual carriageway limit for goods vehicles over 7.5 tonnes is 60 mph.
第3题，共25题
What is the motorway speed limit for a goods vehicle of not more than 7.5 tonnes that is towing a trailer?
- 60 mph
- 70 mph
- 50 mph
- 56 mph
显示答案
答案: A. 60 mph
Goods vehicles up to 7.5 tonnes may do 70 mph on motorways, but 60 mph if articulated or towing a trailer.
第4题，共25题
Many large vehicles have speed limiters. What top speed are they often limited to?
- 50 mph (80 km/h)
- 70 mph (112 km/h)
- 62 mph (100 km/h)
- 56 mph (90 km/h)
显示答案
答案: D. 56 mph (90 km/h)
Rule 222 notes that many large vehicles are limited to 56 mph, even on motorways.
第5题，共25题
You drive a goods vehicle over 7.5 tonnes on a motorway with three or more lanes. Which lane must you NOT use?
- The left-hand lane, except when joining or leaving
- Any lane at night, except the left-hand lane
- The right-hand lane, except in special cases such as lane closures
- The middle lane, except when overtaking another lorry
显示答案
答案: C. The right-hand lane, except in special cases such as lane closures
Rule 265: goods vehicles over 7.5 tonnes must not use the right-hand lane of a motorway with three or more lanes, apart from the exceptions given.
第6题，共25题
What should you do before going down a long, steep hill in a lorry?
- Stay in a high gear and use only the footbrake all the way
- Choose a lower gear before the descent, and use the endurance brake
- Select neutral at the top and coast down to save fuel
- Speed up near the top so the descent takes less time
显示答案
答案: B. Choose a lower gear before the descent, and use the endurance brake
A lower gear and an endurance brake (retarder) help control speed so the service brakes do not overheat and fade.
第7题，共25题
What can happen if you use the footbrake continuously on a long downhill stretch?
- The fuel will start to freeze
- The tyres will over-inflate
- The brakes can overheat and fade
- The engine will stall
显示答案
答案: C. The brakes can overheat and fade
Continuous braking makes brakes overheat and lose effectiveness. Use a lower gear and the retarder.
第8题，共25题
Why should you avoid coasting downhill in neutral?
- It is only allowed on motorways
- You lose engine braking and have less control
- It wears out the tyres more quickly
- It stops the tachograph recording
显示答案
答案: B. You lose engine braking and have less control
Coasting removes engine braking, so the brakes have to do all the work and you have less control.
第9题，共25题
What does an anti-lock braking system (ABS) help you do in an emergency stop?
- Keep steering control while braking hard
- Drive faster in the wet
- Brake without pressing the pedal
- Stop in half the distance on any surface
显示答案
答案: A. Keep steering control while braking hard
ABS stops the wheels locking, so you can still steer. It does not always shorten stopping distances.
第10题，共25题
Your lorry has air brakes. What should you do if the low air pressure warning comes on while driving?
- Pump the brake pedal to build air
- Keep driving to your depot
- Stop safely as soon as possible and get help
- Release the parking brake fully
显示答案
答案: C. Stop safely as soon as possible and get help
A low air warning means braking pressure is falling. Stop safely and do not drive on until it is fixed.
第11题，共25题
Why should you drain the air tanks on a lorry with air brakes regularly?
- To make the lorry lighter and save fuel on long trips
- To test that the horn and air seats are working
- To let you refill the tanks with brake oil
- To remove water that collects and can freeze or damage the system
显示答案
答案: D. To remove water that collects and can freeze or damage the system
Water collects in air tanks and can freeze or damage valves. Tanks without automatic drains need draining.
第12题，共25题
What is the minimum tyre tread depth for a lorry?
- 0.5 mm in any one groove of the tread
- 1 mm across three-quarters of the tread, all the way round
- 3 mm across the centre of the tread only
- 1.6 mm across the central three-quarters, all round the tyre
显示答案
答案: B. 1 mm across three-quarters of the tread, all the way round
Annex 6: large vehicles must have at least 1 mm of tread across three-quarters of the breadth, in a continuous band around the tyre.
第13题，共25题
When should you check your lorry before driving?
- Only after a breakdown or a collision
- Once a month, or before each MOT test
- Only when a warning light comes on
- Every day, with a walkaround check before setting off
显示答案
答案: D. Every day, with a walkaround check before setting off
Check the vehicle before every journey, including lights, tyres, mirrors, brakes and the load.
第14题，共25题
What does the Highway Code say about leaving a lorry's engine running while it is parked on a public road?
- You must leave it running in winter
- You must not leave it running unnecessarily
- You must leave it running for 10 minutes before driving
- You may leave it running for as long as you like
显示答案
答案: B. You must not leave it running unnecessarily
Rule 123: you must not leave an engine running unnecessarily while the vehicle is stationary on a public road.
第15题，共25题
Rule H1 of the Highway Code says who has the greatest responsibility to reduce danger?
- Drivers of vehicles that can cause the greatest harm
- Horse riders, because horses can be unpredictable
- Cyclists, because they share lanes with lorries
- Pedestrians, because they are the slowest road users
显示答案
答案: A. Drivers of vehicles that can cause the greatest harm
Rule H1: those in charge of vehicles that can cause the greatest harm have the greatest responsibility to reduce danger.
第16题，共25题
You are turning left at a junction in a lorry. A cyclist is going straight ahead on your left. What should you do?
- Sound the horn and then turn
- Turn quickly before the cyclist arrives
- Stop in the middle of the junction
- Give way to the cyclist and do not cut across them
显示答案
答案: D. Give way to the cyclist and do not cut across them
Rule H3: do not cut across cyclists going ahead when you are turning. Wait for a safe gap.
第17题，共25题
How much room should you leave when overtaking a cyclist at speeds up to 30 mph?
- At least 0.5 metres
- At least 1 metre
- At least 3 metres in all cases
- At least 1.5 metres
显示答案
答案: D. At least 1.5 metres
Rule 163: leave at least 1.5 metres when overtaking cyclists at speeds up to 30 mph, and more at higher speeds.
第18题，共25题
Why should a lorry driver take extra care before moving off from rest?
- Lorries cannot move off slowly in first gear
- Lorry mirrors only show the area far behind
- People and cyclists can be hidden close to the cab
- Moving off is when the tachograph starts recording
显示答案
答案: C. People and cyclists can be hidden close to the cab
Large vehicles have blind spots close to the cab. Check all mirrors and look before moving off.
第19题，共25题
You cannot see clearly behind you when reversing a lorry. What should you do?
- Get someone to guide you
- Reverse quickly
- Reverse with the door open
- Rely on the horn only
显示答案
答案: A. Get someone to guide you
Rule 202: if you cannot see clearly when reversing, get someone to guide you.
第20题，共25题
Why may a long lorry need to straddle lanes at a roundabout?
- Its length means it may need more room to get round
- Because lorries must use two lanes by law
- To save fuel by taking a straighter line
- To stop other vehicles from overtaking it
显示答案
答案: A. Its length means it may need more room to get round
Rule 187: long vehicles may need to take a different course or straddle lanes at roundabouts.
第21题，共25题
At a mini-roundabout, when may a large vehicle drive over the central marking?
- Only at night when traffic is light
- Never, even if it cannot get round
- Always, because it is a large vehicle
- Only when it is too large to go round it
显示答案
答案: D. Only when it is too large to go round it
Rule 188: all vehicles must pass round the central markings except large vehicles that cannot physically do so.
第22题，共25题
Large vehicles block the view of other road users. What does the Highway Code advise drivers of smaller vehicles behind a lorry?
- Drop back so they can see the road ahead
- Flash their headlights so the driver sees them
- Overtake on the left as soon as possible
- Follow closely to save fuel in its slipstream
显示答案
答案: A. Drop back so they can see the road ahead
Rule 222: drivers behind large vehicles should drop back so they can see ahead and the lorry driver can see them.
第23题，共25题
When does a large vehicle need extra road space?
- When turning or dealing with a hazard it cannot avoid
- Only when it is empty and light
- Only when it is driving on a motorway
- Never; it should always stay in its lane
显示答案
答案: A. When turning or dealing with a hazard it cannot avoid
Rule 221: large vehicles may need extra road space to turn or deal with hazards. Others should be ready to stop and wait.
第24题，共25题
Which vehicles are most affected by strong winds?
- Low sports cars
- Buses parked in a depot
- High-sided vehicles
- Vehicles in a tunnel
显示答案
答案: C. High-sided vehicles
Rule 232: high-sided vehicles are most affected by windy weather.
第25题，共25题
When must you use headlights in poor visibility?
- Only on motorways and dual carriageways
- Only after midnight on unlit roads
- Only when it is raining heavily
- When visibility is seriously reduced, generally under 100 metres
显示答案
答案: D. When visibility is seriously reduced, generally under 100 metres
Rule 226: you must use headlights when visibility is seriously reduced, generally when you cannot see more than 100 metres.

相关测试