100+ Free DRTS Heavy-Vehicle Theory Practice Questions

Pass your Botswana DRTS Heavy-Vehicle Driving Theory Test (Classes C, C1, EB, EC, EC1) exam on the first try — instant access, no signup required.

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Sample DRTS Heavy-Vehicle Theory Practice Questions

Try these sample questions to test your DRTS Heavy-Vehicle Theory exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1While driving a heavy vehicle fitted with air brakes, the low air-pressure warning light and buzzer activate. What should you do?

A.Continue to your destination and report the fault afterwards

B.Pump the brake pedal rapidly to rebuild air pressure while moving

C.Stop in a safe place as soon as possible and investigate the cause

D.Switch off the engine immediately in the traffic lane

Explanation: A low air-pressure warning means the braking system may soon lose effectiveness, so the safe response is to stop in a safe place as soon as possible and investigate. Continuing to drive risks total brake failure. On many air-brake systems the spring brakes will apply automatically as pressure falls further.

2What is the main cause of brake fade when a heavily laden truck descends a long hill?

A.Overheating of the brake drums and linings from prolonged braking

B.Too much brake fluid in the hydraulic reservoir

C.Cold morning air reducing tyre grip

D.Worn tyre tread on the steering axle

Explanation: Brake fade is caused by overheating of the brake drums and linings when the brakes are applied continuously on a long descent. As the friction material overheats it loses grip, and braking power falls away even though the pedal is pressed. Selecting a low gear and using engine braking prevents it.

3What is the correct technique for descending a long, steep hill in a laden heavy vehicle?

A.Select neutral to save fuel and control speed with the brakes

B.Select a low gear before the descent and use engine braking or a retarder

C.Apply the service brakes firmly and continuously all the way down

D.Switch off the engine to reduce speed gradually

Explanation: The correct technique is to select a low gear before starting the descent so that engine braking or a retarder holds the vehicle's speed. This keeps the service brakes cool and available for emergencies. The gear should be chosen before the hill, because changing down mid-descent may be impossible at speed.

4What is the main purpose of a retarder or exhaust brake fitted to a heavy vehicle?

A.To increase the vehicle's maximum road speed

B.To improve fuel economy when climbing hills

C.To replace the parking brake when stationary

D.To assist the service brakes on descents and reduce brake wear and fade

Explanation: A retarder or exhaust brake provides supplementary braking force that slows the vehicle without using the wheel brakes. Its main purpose is to control speed on long descents, reducing wear on the service brakes and protecting them from overheating and fade.

5Why does a fully laden truck need a much longer distance to stop than a car travelling at the same speed?

A.Truck brakes are always in poorer condition than car brakes

B.The greater mass of the truck carries far more kinetic energy that the brakes must absorb

C.Truck drivers have slower reaction times

D.Trucks are not permitted to brake as hard as cars

Explanation: A laden truck's greater mass means it carries far more kinetic energy at any given speed, and the brakes must convert all of that energy into heat. This is why stopping distances increase sharply with load. Drivers must compensate with larger following distances and earlier braking.

6How should cargo be distributed when loading a rigid goods vehicle?

A.Heaviest items stacked as high as possible for stability

B.All weight over the rear axle to improve traction

C.Heaviest items low down and close to the axles, spread evenly side to side

D.Heavy items at the front of the load bed only

Explanation: Cargo should be loaded with the heaviest items low down and near the axles, spread evenly from side to side. This keeps the centre of gravity low, avoids overloading any single axle, and maintains stable, predictable handling. Poor distribution is a major cause of rollovers and axle overloads.

7When should the security of a load on a heavy vehicle be checked?

A.Before departure, again shortly after setting off, and regularly during the journey

B.Only at the final destination when unloading

C.Only if the driver hears noise from the load area

D.Once a week at the depot

Explanation: A load should be checked before departure, again soon after setting off because straps and lashings settle and loosen in the first kilometres, and then regularly throughout the journey. Loads shift under braking and cornering, so a single check at the depot is never enough.

8What is the effect of stacking heavy cargo high on the load bed of a truck?

A.It lowers fuel consumption

B.It improves braking performance

C.It makes the vehicle more stable in crosswinds

D.It raises the centre of gravity and increases the risk of rollover

Explanation: Stacking heavy cargo high raises the vehicle's centre of gravity, which sharply increases the risk of rollover when cornering, swerving or driving on a cambered surface. High, heavy loads also catch more wind. Heavy items belong low down on the load bed.

9You are driving a truck carrying a tall, top-heavy load and approaching a sharp bend. What should you do?

A.Maintain speed so the load stays pressed into place

B.Slow down to a safe speed before entering the bend

C.Brake hard halfway around the bend

D.Steer sharply to keep the vehicle on line

Explanation: With a top-heavy load the safe technique is to reduce speed before entering the bend, so cornering forces stay low and the rollover threshold is not approached. Braking or steering sharply while in the bend transfers weight suddenly and can tip a high-centre-of-gravity vehicle.

10What does the term 'off-tracking' describe in a long or articulated vehicle?

A.The tendency of the trailer to skid sideways on gravel roads

B.The loss of GPS signal in remote rural areas

C.The rear wheels following a tighter path than the front wheels when turning

D.The vehicle drifting out of its lane in strong crosswinds

Explanation: Off-tracking is the way the rear wheels of a long or articulated vehicle cut inside the path of the front wheels during a turn. The longer the vehicle, the greater the off-tracking. Drivers must allow for it so the rear wheels do not mount kerbs, strike pedestrians or sideswipe other vehicles.

About the DRTS Heavy-Vehicle Theory Exam

The Botswana DRTS heavy-vehicle driving theory test is the mandatory knowledge test for drivers seeking licence classes C1, C, EB, EC and EC1 — heavy motor vehicles over 3,500 kg gross vehicle mass, rigid and articulated combinations, and light vehicles towing heavier trailers. Administered by the Department of Road Transport and Safety, the 45-question test covers SADC-system road rules and signs, heavy-vehicle braking and loading safety, defensive driving, and professional driving duties including Professional Driving Permits (PrDP). Candidates must score at least 39 out of 45 to pass; unsuccessful candidates may reapply after 14 days.

Assessment

A single 45-question knowledge test on road rules, traffic signs, heavy-vehicle safety and professional driving duties, taken electronically or manually at a DRTS office. Passing leads to the provisional learner's licence; the practical test (yard, then road) follows later.

Time Limit

Not officially published

Passing Score

39 out of 45 questions

Exam Fee

BWP 60.00 theory test fee (official question booklet BWP 65.00 for classes C, C1, EC, EC1; provisional learner's licence BWP 45.00; practical test BWP 60.00; licence issue BWP 105.00) (Department of Road Transport and Safety (DRTS), Botswana Ministry of Transport and Public Works)

DRTS Heavy-Vehicle Theory Exam Content Outline

~25%

Heavy-Vehicle Operations

Air and hydraulic braking behaviour, brake fade and snub braking on descents, stopping distance at gross vehicle mass, load distribution and securing, rollover risk, off-tracking and wide turns, coupling checks, and daily pre-trip inspection.

~20%

Rules of the Road and Right of Way

Keeping left, roundabout priority (give way to the right), overtaking rules for long vehicles, intersections, traffic signals, lane discipline, and level crossings.

~20%

Traffic Signs, Signals and Markings

SADC-system prohibitory, mandatory, warning and guidance signs relevant to heavy vehicles — restriction signs, steep-hill warnings, markings and signals.

~15%

Defensive Driving and Hazards

Following distance at GVW, fatigue management, wet and gravel road technique, night driving, livestock on rural roads, and alcohol and drug impairment awareness.

~10%

Professional Duties and PrDP

PrDP-G (goods, age 21), PrDP-H (hazardous, age 25) and PrDP-P (passenger, age 21 or 25 by vehicle) requirements, police fingerprint clearance for passenger permits, fees, late-renewal penalties, and professional conduct.

~10%

Documentation and Roadworthiness

DL31 health declaration, minimum age 21 for heavy classes, fees, 24-month provisional licence, 5-year licence card, and roadworthiness intervals (goods vehicles 1 year, passenger transport 6 months).

How to Pass the DRTS Heavy-Vehicle Theory Exam

What You Need to Know

Passing score: 39 out of 45 questions
Assessment: A single 45-question knowledge test on road rules, traffic signs, heavy-vehicle safety and professional driving duties, taken electronically or manually at a DRTS office. Passing leads to the provisional learner's licence; the practical test (yard, then road) follows later.
Time limit: Not officially published
Exam fee: BWP 60.00 theory test fee (official question booklet BWP 65.00 for classes C, C1, EC, EC1; provisional learner's licence BWP 45.00; practical test BWP 60.00; licence issue BWP 105.00)

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

DRTS Heavy-Vehicle Theory Study Tips from Top Performers

1Master braking physics first: a loaded heavy vehicle needs far more stopping distance, and brake fade on long descents is managed with lower gears and snub braking — not continuous pedal pressure.

2Learn load safety rules: high or badly distributed loads raise the centre of gravity and sharply increase rollover risk on curves and roundabouts.

3Drill the PrDP table — category G (goods, 21), H (hazardous, 25) and P (passengers, 21 or 25 by vehicle) — including which permits need police fingerprint clearance.

4Know the numbers: 39/45 to pass, 14-day retake wait, age 21 for heavy classes, DL31 valid 30 days, and roadworthiness every 12 months for goods vehicles versus 6 months for passenger transport.

5Study wrong-answer explanations — heavy-vehicle distractors often swap in light-vehicle rules that do not apply at gross vehicle mass.

Frequently Asked Questions

How many questions are on the Botswana DRTS heavy-vehicle theory test and what is the pass mark?

The official DRTS theory test for classes C, C1, EB, EC and EC1 has 45 questions, and the pass mark is 39 out of 45, according to the Government of Botswana driving licence application page.

What are the requirements to take the heavy-vehicle theory test in Botswana?

Applicants for classes C1, C, EC1 and EC must be at least 21 years old, complete the Health Declaration form DL31 (valid for 30 days), pass eye screening, and pay the BWP 60.00 theory test fee at a DRTS office.

What is a Professional Driving Permit (PrDP) in Botswana?

A PrDP is a DRTS-issued professional permit: PrDP-G for goods (minimum age 21), PrDP-H for hazardous goods (age 25), and PrDP-P for passengers (age 21 for taxis and minibuses, 25 for omnibuses). Passenger PrDPs require Botswana Police fingerprint clearance; taxis, call cabs and minibuses are reserved for Botswana nationals.

What happens if I fail the DRTS heavy-vehicle theory test?

Unsuccessful applicants must wait 14 days before they may reapply and rebook the theory test at a DRTS office.

Is this practice bank the official DRTS test?

No. This is a free English-language MCQ study aid aligned to the official DRTS syllabus topics for heavy classes. It is not the official DRTS question booklet and does not simulate the exact test interface.