100+ Free INTRANT Heavy Vehicle Driving Theory Practice Questions

Prepare for the INTRANT Categoría 03/04 Driving Theory Examination — Vehículos Pesados (Dominican Republic) exam with instant access — no signup required.

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Sample INTRANT Heavy Vehicle Driving Theory Practice Questions

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

1A driver needs to operate a 6,000 kg two-axle cargo truck and a bus designed for 30 passengers. Which vehicle scope matches both under Categoría 03?

A.Rigid cargo motor vehicles exceeding 3,500 kg up to 7,500 kg maximum authorized mass (MMA), and passenger transport vehicles (minibuses and buses) carrying more than 9 up to 40 passengers

B.Articulated multi-trailer commercial transport trucks (patanas) exceeding 40,000 kg MMA with three or more axles

C.Only two-wheeled motorized delivery motorcycles and motorized passenger tricycles

D.Agricultural tractors and tracked earthmoving bulldozers exceeding 15,000 kg MMA

Explanation: According to the official INTRANT Manual de Conducción Categoría 03 y 04 and Ley 63-17, a Categoría 03 license authorizes driving medium-heavy commercial vehicles: cargo vehicles with an MMA between 3,500 kg and 7,500 kg (typically 2-axle rigid trucks), and passenger transport omnibuses/minibuses designed to carry between 10 and 40 passengers.

2What is the minimum statutory age and prerequisite driving experience required to obtain an INTRANT Categoría 03 heavy vehicle license?

A.Minimum 21 years of age and having held a valid Categoría 02 license for at least two (2) years

B.Minimum 18 years of age with no prior licensing experience if accompanied by an employer

C.Minimum 16 years of age with written parental and driving school authorization

D.Minimum 30 years of age with ten years of commercial taxi driving experience

Explanation: Under Article 200 of Ley 63-17, applicants for a professional heavy vehicle driver's license (Categoría 03) must be at least twenty-one (21) years of age and must have possessed a valid Categoría 02 (light vehicles) license for a minimum of two (2) consecutive years.

3What are the requirements to upgrade from a Categoría 03 license to a Categoría 04 license (heavy articulated trucks / patanas and buses over 40 passengers)?

A.Minimum 24 years of age and a valid Categoría 02 or 03 license issued at least two (2) years earlier, plus the required theoretical and practical evaluations

B.Minimum 21 years of age and paying an upgrade processing fee without additional testing

C.Holding a motorcycle license for five years and obtaining a commercial bank guarantee

D.Operating a light pickup truck for six months without receiving any speeding tickets

Explanation: INTRANT's current category-change service sets age 24 for Categoría 04 and accepts a valid Categoría 02 or 03 license whose issue date is at least two years earlier. The process includes psychophysical screening, road-safety instruction, a theory test, and a practical test; a Categoría 03 license is not the only accepted prerequisite.

4What is the statutory Blood Alcohol Concentration (BAC / alcoholemia) limit for commercial cargo and public passenger drivers under Article 258 of Ley 63-17?

A.0.0 grams of alcohol per liter of blood (absolute zero tolerance for alcohol and illicit drugs)

B.0.2 grams of alcohol per liter of blood (0.10 mg/l in expired air)

C.0.5 grams of alcohol per liter of blood (0.25 mg/l in expired air)

D.0.8 grams of alcohol per liter of blood (0.40 mg/l in expired air)

Explanation: Article 258 of Ley 63-17 establishes a 0.0 g/l blood and 0.0 mg/l breath limit for public-passenger, cargo, and school-transport drivers. That is stricter than the general-driver and motorcycle limits in the same article.

5Under Article 268 of Ley 63-17, what is the maximum speed for a vehicle used for school transport?

A.50 km/h

B.80 km/h

C.100 km/h

D.120 km/h

Explanation: Article 268 expressly prohibits drivers of school-use vehicles from exceeding 50 km/h. Other road limits remain relevant, so a lower posted or zone limit must also be obeyed.

6What lane discipline is legally mandated for heavy freight trucks and omnibuses on multi-lane expressways under Dominican traffic law?

A.They should remain as close to the right edge or in the right lane as conditions permit, leaving it only for a lawful maneuver

B.They may cruise continuously in the far left lane to avoid slower merging traffic

C.They may straddle both center lanes to prevent private automobiles from passing

D.They must travel continuously on the unpaved road shoulder

Explanation: Article 247 directs heavy vehicles, motorcycles, scooters, and vehicles moving below normal speed to travel as close to the right edge as reasonably possible. A lawful pass, turn, obstruction, or traffic control can require a temporary lane change.

7Which sequence does INTRANT's current category-change service require after the applicant meets the document and experience requirements?

A.Psychophysical evaluation, road-safety instruction, a theory test, and a practical test

B.Payment only, with no evaluation or test

C.A motorcycle road test followed by a marine-navigation test

D.Only a written employer recommendation

Explanation: The current INTRANT category-change service lists psychophysical evaluation, a road-safety talk, a theoretical knowledge test, and a practical skills test. Local route and time restrictions are separate controls and should be followed as posted or authorized rather than memorized as a permanent nationwide schedule.

8Under Decree 330-26, how long is a Categoría 03 or 04 driving license valid?

A.Three years for a holder under 75; one year for a holder aged 75 or older

B.Four years at every age

C.Two years under age 75 and five years thereafter

D.A lifetime with no renewal

Explanation: Decree 330-26, issued in May 2026, sets a three-year validity period for Categoría 03 and 04 licenses when the holder is under 75, and one year once the holder is 75 or older.

9For a first-time Categoría 03 or 04 practical examination, what vehicle-related responsibility did INTRANT confirm when examinations resumed in 2026?

A.The applicant must bring the vehicle corresponding to the requested category for the mandatory practical test

B.INTRANT waives the practical test for every heavy-vehicle applicant

C.The applicant may take the test on a motorcycle regardless of category

D.A scale model of the vehicle is sufficient

Explanation: INTRANT's March 2026 notice confirmed that the practical examination remains mandatory and that first-time Categoría 03 and 04 applicants must present the vehicle that corresponds to the requested category. This bank prepares for theory and does not simulate that practical assessment.

10What is the primary function of the air compressor (compresor de aire) in a commercial vehicle pneumatic brake system?

A.It pumps atmospheric air into storage reservoirs to build and maintain the pneumatic pressure needed to operate the brakes

B.It pumps hydraulic brake oil through rubber hoses to the front brake calipers

C.It compresses engine exhaust gases to provide cabin air conditioning

D.It cools the engine radiator by blowing high-pressure air through the grille

Explanation: The air compressor is mechanically driven by the engine (via gears or serpentine belt). Its sole duty is to draw filtered ambient air, compress it, and pump it into the primary and secondary compressed air storage tanks to supply hydraulic-free pneumatic brake chambers.

About the INTRANT Heavy Vehicle Driving Theory Exam

In the Dominican Republic, professional operators of heavy transport vehicles must obtain an INTRANT Categoría 03 or Categoría 04 licence under Ley No. 63-17. Categoría 03 covers two-axle trucks and passenger vehicles below 40 occupants within the manual's weight limits; Categoría 04 covers buses over 40 passengers, patanas, and trucks with more than two axles. The official process includes theory and a vehicle-specific practical evaluation. The official simulator and combined manual are in Spanish; this English-language MCQ bank is a study adaptation, not an official translation, practical-test simulation, or substitute for professional vehicle training.

Assessment

The category-change process includes a psychophysical evaluation, road-safety instruction, a unified CAT. 03/04 theoretical evaluation, and a mandatory practical heavy-vehicle evaluation. INTRANT states that first-time Categoría 03 and 04 applicants must bring the vehicle corresponding to the requested category for the practical evaluation.

Time Limit

Not published by INTRANT

Passing Score

Not published by INTRANT

Exam Fee

RD$ 3,000 for category upgrade (Cambio de Categoría); RD$ 300 re-examination fee (Instituto Nacional de Tránsito y Transporte Terrestre (INTRANT))

INTRANT Heavy Vehicle Driving Theory Exam Content Outline

15 of 100 study questions (15%)

Legal Framework and Commercial Driver Requirements

Licensing requirements for Categoría 03 (minibuses, two-axle trucks, 3.5-7.5 t) and Categoría 04 (buses over 40 passengers, patanas, and trucks with more than two axles), minimum ages 21 and 24, three-year validity until age 75, and driver duties.

38 of 100 study questions (38%)

Heavy Vehicle Mechanics, Air Brakes, and Coupling

Compressed-air brake principles, ABS, ASR, EBS and ESP, engine braking (freno motor), retarders, fifth-wheel and kingpin coupling, trailer dynamics, tires, suspension, and avoiding jackknifing (efecto tijera).

37 of 100 study questions (37%)

Heavy Vehicle Operations and Defensive Maneuvers

Off-tracking during turns, grade descents and brake overheating, emergency runaway ramps, the 150-metre statutory highway following minimum, blind-spot management, and reversing trailers.

10 of 100 study questions (10%)

Commercial Passenger and Freight Regulations

Strict zero alcohol limit under Art. 258, 150-metre statutory following distance on highways, lane discipline, cargo securement and axle-load limits, and passenger-transport safety.

How to Pass the INTRANT Heavy Vehicle Driving Theory Exam

What You Need to Know

Passing score: Not published by INTRANT
Assessment: The category-change process includes a psychophysical evaluation, road-safety instruction, a unified CAT. 03/04 theoretical evaluation, and a mandatory practical heavy-vehicle evaluation. INTRANT states that first-time Categoría 03 and 04 applicants must bring the vehicle corresponding to the requested category for the practical evaluation.
Time limit: Not published by INTRANT
Exam fee: RD$ 3,000 for category upgrade (Cambio de Categoría); RD$ 300 re-examination fee

Keys to Passing

Work through all 100 available questions
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INTRANT Heavy Vehicle Driving Theory Study Tips from Top Performers

1Understand how compressed-air brakes work and how ABS, EBS, ASR, and ESP support—but do not replace—safe speed, spacing, and driver control.

2Review the cause and prevention of jackknifing (efecto tijera): locking the drive wheels or sudden braking on slippery curves causes the tractor and trailer to fold together.

3Memorize the legal alcohol limit for cargo and public-passenger drivers: it is strictly 0.0 g/l under Article 258 of Ley 63-17.

4Study off-tracking: during tight turns, the rear wheels of a long truck or trailer follow a path closer to the curb than the front wheels, requiring the driver to square off the turn.

Frequently Asked Questions

What is the difference between INTRANT Categoría 03 and Categoría 04 licenses?

Categoría 03 authorizes driving heavy vehicles between 3,500 kg and 7,500 kg Maximum Authorized Mass (MMA), including rigid two-axle trucks, minibuses, and buses designed for fewer than 40 passengers. Categoría 04 authorizes the largest vehicle classes: buses designed for more than 40 passengers, trucks with three or more axles, and articulated vehicles or tractor-trailers (patanas).

What theoretical examination is required for Categoría 03 and Categoría 04?

INTRANT's public simulator uses one unified 'CAT. 03/04 - VEHICULOS PESADOS' theoretical track based on the combined official manual. INTRANT does not publish a current question count, duration, or pass mark. Applicants must also complete the practical evaluation in a vehicle corresponding to the requested category.

What is the legal blood alcohol concentration (BAC) limit for commercial and heavy vehicle drivers in the Dominican Republic?

Under Article 258 of Ley No. 63-17, drivers of cargo vehicles and public-passenger transport are subject to 0.0 grams of alcohol per litre of blood and 0.0 mg/l in exhaled breath.

How much following distance must a heavy vehicle leave on Dominican highways?

Article 224 of Ley No. 63-17 and the official INTRANT Categoría 03/04 manual require heavy vehicles on highways and roads to maintain at least 150 metres behind the vehicle ahead.