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Quizzes > Quizzes for Business > Education

Driver's License Theory Test (Class C) Quiz

Assess Your Class C Driving Knowledge Today

Difficulty: Moderate
Questions: 20
Learning OutcomesStudy Material
Colorful paper art representing a quiz on Class C Drivers License Theory Test

Ready to conquer the Driver's License Theory Test (Class C)? This free class c driving theory quiz offers realistic multiple-choice scenarios to boost your confidence and exam readiness. Ideal for new drivers and those seeking a refresher, this interactive quiz helps reinforce essential traffic rules and vehicle regulations. All questions can be adjusted in our editor for tailored practice. Ready for more challenges? Try the Driver's License Practice Quiz, explore the Driver's License Regulations Knowledge Test, or browse other quizzes.

What does a circular sign with a red border and the number 80 indicate for Class C vehicles?
No speed limit until 80 km/h
Recommended speed of 80 km/h
Minimum speed of 80 km/h
Maximum speed of 80 km/h
A circular sign with a red border and number indicates the maximum permitted speed. Trucks and heavy vehicles must not exceed the posted number on such a sign.
At an uncontrolled intersection without traffic signals, which vehicle has the right-of-way?
The vehicle on the right
The heavier vehicle
The vehicle on the left
The faster vehicle
At an uncontrolled intersection, drivers must yield to vehicles approaching from their right. This standard rule helps prevent ambiguity when there are no signals or signs.
In foggy conditions, what is the safest action for a Class C vehicle driver regarding speed?
Use high beam headlights for visibility
Reduce speed and use fog lights
Maintain normal speed
Increase speed to exit the fog quickly
Fog greatly reduces visibility, so truck drivers should lower speed and use fog lights if available. This ensures greater reaction time and reduces accident risk.
During a pre-trip inspection, checking the brake system includes verifying what?
Tire tread depth only
Engine coolant temperature
That the air pressure gauge remains within the safe operating range
Fuel level in the tank
On vehicles with air brakes, confirming that air pressure builds to and holds within the proper range is essential. This prevents brake failure and ensures safe stopping power.
Before starting a Class C vehicle, which fluid level must always be inspected under the hood?
Transmission fluid only
Brake fluid only
Engine oil level
Windshield washer fluid only
Checking engine oil under the hood is critical to ensure proper lubrication and engine health. Without adequate oil, engine components wear prematurely and failure risk increases.
What does a circular sign showing a truck silhouette with "3.5t" mean?
It allows only trucks carrying exactly 3.5 tonnes
It requires a minimum weight of 3.5 tonnes
It indicates a recommended weight of 3.5 tonnes
It prohibits vehicles over 3.5 tonnes from entering
A circular sign with a truck icon and weight limit means that vehicles exceeding that gross weight are not allowed to proceed. This protects roads and structures from overloading.
In a roundabout, who has the right-of-way?
Vehicles entering the roundabout
Cyclists regardless of entry
Vehicles already circulating in the roundabout
Pedestrians crossing within
Traffic inside the roundabout has priority over entering vehicles. All entering vehicles must yield until it is safe to join the circular flow.
When descending a steep mountain grade in a heavy vehicle, which technique is recommended?
Shift into neutral and freewheel
Rely solely on the service brakes
Use a low gear and engine braking
Maintain high gear to control speed
Using a low gear combined with engine braking prevents overheating of service brakes and maintains a controlled descent. Freewheeling or relying only on brakes risks fade and loss of control.
Which sequence is correct for a pre-trip inspection of the trailer coupling?
Inspect from the ground up: locking jaws, kingpin, safety chains and lines
Start engine first, then check kingpin
Check only the electrical lines
Perform coupling check after driving a short distance
A thorough coupling check begins on the ground, ensuring jaws lock, the kingpin seats correctly, and all safety connections are secure. This prevents detachment while driving.
You approach a school bus stopped with flashing red lights on both sides of the road. What must you do?
Proceed with caution after slowing down
Honk to alert the driver before passing
Stop in both directions until lights stop flashing
Stop only if you are behind the bus
Vehicles in both directions must stop when a school bus shows flashing red lights, as children may be crossing. This rule enhances student safety around stops.
When merging onto a high-speed highway, a heavy vehicle driver should:
Stop at the end of the ramp before merging
Signal only after stopping entirely
Accelerate to match traffic flow and merge smoothly
Maintain a slow speed until a gap appears
Matching the speed of highway traffic allows the heavy vehicle to merge without causing wake-ups or sudden braking by other vehicles. Planning the merge early is key.
In heavy rain, what is the best speed management strategy for a Class C driver?
Use cruise control at normal highway speed
Reduce speed below the limit and increase following distance
Maintain posted speed if tires are new
Increase speed to reduce exposure time
Reducing speed and enlarging the gap to the vehicle ahead compensates for reduced traction and longer stopping distances in wet conditions. Cruise control can mask wheel slip.
Which hazard is most associated with crossing a high open bridge in a heavy vehicle?
Crosswinds that can push the vehicle sideways
Sharp downhill grade at the midpoint
Restricted headroom under overpasses
Black ice forming on the deck
Open bridges expose vehicles to high crosswinds that can reduce steering control, especially in tall and heavy vehicles. Drivers should slow down and maintain firm steering.
According to hours-of-service regulations, after 10 consecutive hours off duty a Class C driver may drive up to:
12 hours
8 hours
11 hours
14 hours
Regulations typically allow a maximum of 11 driving hours after a required 10-hour off-duty period. Staying within this limit helps prevent fatigue-related incidents.
A diamond-shaped warning sign depicts a truck tipping over on a curve. What does this indicate?
No trucks allowed around the bend
Risk of rollover for heavy vehicles on the upcoming curve
Steep grade ahead for trucks
Slippery when wet
This symbol warns truck drivers of a curve where the risk of rollover is high due to centrifugal force. Reducing speed and using a lower gear is advised.
On a multi-lane highway with a speed limit above 80 km/h, a Class C vehicle driver must:
Avoid using the left-most lane except when overtaking
Always remain in the left lane
Use any lane freely without restriction
Only drive in the center lane
Regulations often require heavy vehicles to stay in the right lanes and use the left lane only briefly to pass slower traffic. This reduces congestion and safety risks.
Under hours-of-service rules, a driver who has driven 11 hours must next:
Take at least 10 consecutive hours off duty
Take a 30-minute break only
Continue driving with a note in the logbook
Drive up to 2 additional hours if traffic is light
After reaching the daily driving limit, drivers must have a 10-hour off-duty period before they can resume driving. This mandatory rest prevents fatigue.
When approaching the crest of a hill in a loaded Class C vehicle, you should:
Reduce speed before the hillcrest to maintain control and visibility
Shift to neutral just before the top
Accelerate through the crest to carry momentum
Maintain the same gear and speed
Slowing before the crest allows the driver to manage blind spots and retain control in case of unexpected hazards immediately beyond the peak.
For optimal load stability, heavy items on a Class C vehicle should be placed:
High and towards the rear
Entirely over the front axle
On one side to balance trailer sway
Low and centered over or between the axles
Placing heavy cargo low and close to the vehicle's center of gravity and axle group minimizes rollover risk and helps distribute weight evenly for braking and steering.
If the air brake warning light illuminates while driving, the driver must:
Switch to emergency brakes immediately
Increase engine RPM to build air faster
Pull over safely and check air pressure and system integrity
Ignore it until the next stop
An illuminated air brake warning light indicates pressure loss or system fault. Stopping to inspect prevents total brake failure and ensures the vehicle remains controllable.
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Learning Outcomes

  1. Analyse traffic signs specific to Class C vehicles
  2. Identify correct right-of-way rules for heavy vehicles
  3. Apply optimal speed management in various driving scenarios
  4. Demonstrate proper safety checks before vehicle operation
  5. Evaluate hazard perception on highways and urban roads
  6. Master regulatory requirements for Class C license holders

Cheat Sheet

  1. Color Coding Traffic Signs - Traffic signs use universal colors to convey important messages instantly: red means stop or prohibition, yellow signals caution, and green provides direction. Getting these hues right is like learning a secret language that keeps you safe on every drive. Take the traffic sign color quiz
  2. Right-of-Way Rules - Mastering who goes first can mean the difference between a smooth journey and a fender bender. Always yield to vehicles on the main road and give pedestrians the green light at crosswalks. Test your right-of-way skills
  3. Safe Speed Management - Your speed should match road conditions, traffic flow, and visibility to keep everyone safe. Remember: faster speeds mean longer stopping distances, so slow down when you need extra control. Dive into speed control tips
  4. Pre-Trip Safety Inspections - A quick check of tires, brakes, lights, and mirrors before hitting the road can prevent nasty surprises. Consistent inspections keep your ride reliable and your journey carefree. Follow the pre-trip checklist
  5. Hazard Perception - Stay sharp by scanning for sudden stops, merging vehicles, and pedestrians stepping off the curb. Spotting hazards early gives you superhuman reaction time. Sharpen your hazard radar
  6. Regulatory Requirements - If you're aiming for a Class C license, know your weight limits, passenger rules, and any special regulations. Following these laws keeps you legal and protects everyone on the road. Review license regulations
  7. Vehicle Weight & Stopping Distance - Heavier vehicles take longer to stop, so always keep a safe following distance. Think of it like carrying groceries: more weight means you need extra space to come to a gentle halt. Learn weight and stopping facts
  8. Speed vs. Stopping Distance - Doubling your speed can quadruple your stopping distance, so adjust your pace to maintain that magic safety buffer. Small speed changes lead to big safety gains. Explore speed impact studies
  9. Looking Ahead - Good drivers scan 12 to 15 seconds down the road to anticipate traffic flow and obstacles. This bird's-eye view gives you time to plan smooth maneuvers instead of panicked slams on the brakes. Practice ahead-of-the-car scanning
  10. Effective Communication - Signals aren't just for show: use turn indicators, brake lights, and even your horn to share your driving intentions clearly. A little communication goes a long way toward road harmony. Master communication skills
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