NSW Heavy Vehicle Knowledge Test Practice 2026: Practice test 3

Practice test 3 of 3 for the NSW Heavy Vehicle Knowledge Test Practice: 25 more questions with answers and explanations.

Commercial vehicle
New South Wales
90 questions
Checked October 11, 2026

Question 1 of 25
Which truck is a fatigue-regulated heavy vehicle?
- A truck with a GVM over 12 tonnes
- Only a B-double
- Any truck with a GVM over 4.5 tonnes
- Only a truck carrying dangerous goods
Show answer
Answer: A. A truck with a GVM over 12 tonnes
Trucks over 12 tonnes GVM, and truck and trailer combinations over 12 tonnes combined GVM, are fatigue-regulated.
Question 2 of 25
A load restraint system must be able to hold the load against a sideways force of what share of the load's weight?
- 80%
- 50%
- 10%
- 20%
Show answer
Answer: B. 50%
Sideways and rearward forces of 50% of the load's weight must be resisted. Forward it is 80%, and upward 20%.
Question 3 of 25
Up to what length may a B-double run under the applicable notice or approval?
- 53.5 metres
- 19 metres
- 22 metres
- 26 metres
Show answer
Answer: D. 26 metres
A B-double that meets the conditions may be up to 26 metres long. Combinations over 22 metres must display a sign.
Question 4 of 25
A sign says 'TRUCKS & BUSES MUST USE LOW GEAR'. Which vehicles must obey it?
- Only buses with passengers
- Only road trains
- All vehicles towing a trailer
- Trucks and buses with a GVM over 4.5 tonnes
Show answer
Answer: D. Trucks and buses with a GVM over 4.5 tonnes
The sign applies to trucks and buses over 4.5 tonnes GVM. Use a gear low enough to control speed without riding the brakes.
Question 5 of 25
After a night of heavy drinking, how long can it take for your BAC to return to zero?
- It is always zero by morning
- About 6 hours
- More than 18 hours
- About 2 hours
Show answer
Answer: C. More than 18 hours
Alcohol leaves the body slowly. After heavy drinking, it can take more than 18 hours to reach zero.
Question 6 of 25
When must a driver of a fatigue-regulated heavy vehicle working under standard hours carry a work diary?
- Only when driving in another state
- When driving 100 km or more from their base
- Only when carrying dangerous goods
- Only at night
Show answer
Answer: B. When driving 100 km or more from their base
A work diary is required when you drive 100 km or more from your base, or when you work under BFM or AFM hours.
Question 7 of 25
Why does a long truck swing wide when turning left at an intersection?
- To let cars pass on the left
- To stop the rear wheels running over the kerb or hitting objects
- To slow down traffic behind
- Because heavy vehicles must use the right lane
Show answer
Answer: B. To stop the rear wheels running over the kerb or hitting objects
The rear wheels track inside the front wheels. Going further into the intersection before turning stops them mounting the kerb.
Question 8 of 25
A load projects more than 1.2 metres behind your truck. What warning must you show at night?
- No warning is needed at night
- A red light at the end of the load, visible from 200 metres
- Hazard lights only
- A white light visible from 50 metres
Show answer
Answer: B. A red light at the end of the load, visible from 200 metres
At night, a projecting load needs a red light visible from 200 metres. In daylight, use a brightly coloured flag at least 300 mm on each side.
Question 9 of 25
Under standard hours, what is the work limit in any 14 days for a solo truck driver?
- 154 hours
- 168 hours
- 144 hours
- 120 hours
Show answer
Answer: C. 144 hours
In any 14 days you may work up to 144 hours and must have at least 4 night rests, including 2 on consecutive days.
Question 10 of 25
Under standard hours for a solo truck driver, what is the most work allowed in any 24-hour period?
- 15½ hours
- 12 hours
- 10 hours
- 14 hours
Show answer
Answer: B. 12 hours
Standard hours allow a maximum of 12 hours work in any 24 hours.
Question 11 of 25
Under standard hours, what is the most a solo truck driver may work in any 11 hours?
- 10 hours
- 11 hours
- 9 hours
- 10 hours 45 minutes
Show answer
Answer: A. 10 hours
In any 11 hours you may work up to 10 hours and must rest for at least 60 minutes, in blocks of 15 minutes or more.
Question 12 of 25
Outside a built-up area, how far must a long vehicle (not a road train) stay behind another long vehicle, unless overtaking?
- At least 200 metres
- At least 500 metres
- At least 60 metres
- At least 20 metres
Show answer
Answer: C. At least 60 metres
Long vehicles must stay at least 60 metres behind another long vehicle, so cars can overtake one at a time. This does not apply on multi-lane roads, in built-up areas or when overtaking.
Question 13 of 25
Which bus is a fatigue-regulated heavy vehicle?
- Any bus with more than 8 seats
- Only a school bus
- Only a double-decker bus
- A bus over 4.5 tonnes GVM built to seat more than 12 adults, including the driver
Show answer
Answer: D. A bus over 4.5 tonnes GVM built to seat more than 12 adults, including the driver
A bus is fatigue-regulated when it has a GVM over 4.5 tonnes and seats more than 12 adults including the driver.
Question 14 of 25
When is it unsafe to start across a railway level crossing in a long vehicle?
- When you are towing a trailer
- When the crossing has no lights
- At night
- When the road on the other side does not have room for your whole vehicle
Show answer
Answer: D. When the road on the other side does not have room for your whole vehicle
Do not enter a crossing unless there is room to clear it completely. Never stop on the tracks.
Question 15 of 25
Under standard hours for a solo truck driver, what is the most you may work in any 5 hours 30 minutes?
- 4 hours
- 5 hours 30 minutes
- 6 hours 15 minutes
- 5 hours 15 minutes
Show answer
Answer: D. 5 hours 15 minutes
In any 5½ hours you may work no more than 5¼ hours and must have at least 15 continuous minutes of rest.
Question 16 of 25
What can happen if you use the service brakes continuously down a long hill?
- The tyres cool down
- Brake fade, which can lead to brake failure
- The engine brake switches off
- Better fuel economy
Show answer
Answer: B. Brake fade, which can lead to brake failure
Long, constant braking overheats the brakes. They fade and can fail. Use a low gear and the engine brake to control speed.
Question 17 of 25
Your truck breaks down on a two-way road. Where should you place the three warning triangles?
- One at the front, one at the side and one at the rear
- All three behind the truck
- One in front only
- On the roof of the cabin
Show answer
Answer: A. One at the front, one at the side and one at the rear
On a two-way road, place one triangle in front, one beside and one behind the vehicle so traffic from both directions is warned.
Question 18 of 25
A bridge sign shows a gross load limit of 20 t. Your vehicle and load weigh 20 t. What should you do?
- Cross if no other vehicle is on the bridge
- Do not cross; find another route
- Cross in the middle of the bridge
- Cross slowly
Show answer
Answer: B. Do not cross; find another route
You must not pass a load limit sign if your gross mass equals or exceeds the limit shown.
Question 19 of 25
How are work and rest times counted under the fatigue rules?
- Work is rounded down and rest is rounded up
- Times are not rounded
- Work is rounded up to the next 15-minute block and rest is rounded down
- Both are rounded to the nearest hour
Show answer
Answer: C. Work is rounded up to the next 15-minute block and rest is rounded down
Work time is rounded up and rest time is rounded down to 15-minute blocks, so the record never overstates rest.
Question 20 of 25
Under standard hours, what rest must a solo truck driver have in any 24-hour period?
- At least 4 hours, in any blocks
- At least 2 hours
- At least 10 continuous hours
- At least 7 continuous hours of stationary rest
Show answer
Answer: D. At least 7 continuous hours of stationary rest
In any 24 hours you need at least 7 continuous hours of stationary rest.
Question 21 of 25
When turning with a long vehicle at a marked intersection, how should you position it?
- With the trailer across two lanes behind you
- So vehicles behind cannot pass on the left
- So vehicles behind can pass you on the left
- Always in the far right lane
Show answer
Answer: B. So vehicles behind cannot pass on the left
Block the space on the left so a car or cyclist cannot move up beside your trailer while you turn.
Question 22 of 25
Outside a built-up area, how far must a road train stay behind another long vehicle, unless overtaking?
- At least 100 metres
- At least 400 metres
- At least 60 metres
- At least 200 metres
Show answer
Answer: D. At least 200 metres
A road train must stay at least 200 metres behind another long vehicle, except on multi-lane roads, in built-up areas or when overtaking.
Question 23 of 25
What is the general maximum length of a rigid truck, including any overhanging load?
- 19 metres
- 14.5 metres
- 12.5 metres
- 9 metres
Show answer
Answer: C. 12.5 metres
A rigid vehicle may generally be up to 12.5 metres long. Articulated vehicles and heavy trailer combinations may be up to 19 metres.
Question 24 of 25
Where there are two right-turn lanes, which lane should a long vehicle use?
- The far-left of the two right-turn lanes
- Either lane
- The far-right lane
- The left lane of the road
Show answer
Answer: A. The far-left of the two right-turn lanes
Using the left of the two right-turn lanes gives the trailer room as it tracks inside.
Question 25 of 25
Which method restrains a load by carrying it inside a solid-sided body, tanker or shipping container?
- Lashing
- Cross bearing
- Containment
- Sheeting
Show answer
Answer: C. Containment
Containment holds the load inside the body of the vehicle or a container. Other methods include lashing, blocking and sheeting loose loads.

Related tests