DGT Theory Test (Examen Teórico DGT) — Questions and Answers

Question 1: What is the correct hand signal for a right turn?

Arm waved in a circular motion
Arm bent upward at the elbow (Correct answer)
Arm bent downward at the elbow
Arm extended straight out

Correct answer: Arm bent upward at the elbow

The hand signal for a right turn is the left arm extended out the window with the forearm bent upward at a 90-degree angle.

Question 2: In most U.S. states, a second DUI conviction within a specified period results in:

Enhanced penalties including longer license suspension and possible jail time (Correct answer)
The same penalties as a first offense
Only a written warning
Automatic dismissal if BAC was exactly 0.08%

Correct answer: Enhanced penalties including longer license suspension and possible jail time

Repeat DUI offenses carry escalating penalties including longer license suspensions, mandatory ignition interlock devices, higher fines, and possible imprisonment.

Question 3: When should you use a tourniquet on a bleeding wound?

As the very first step before applying pressure
Only if trained medical personnel are present
For any wound that bleeds
Only when direct pressure has failed to control life-threatening limb bleeding (Correct answer)

Correct answer: Only when direct pressure has failed to control life-threatening limb bleeding

Tourniquets are a last resort for life-threatening limb bleeding that cannot be controlled by direct pressure.

Question 4: What does 'engine knocking' typically indicate?

The oil is too thick for current conditions
Pre-ignition or detonation, often from low-octane fuel or carbon buildup (Correct answer)
A loose heat shield on the exhaust
The engine needs a tune-up

Correct answer: Pre-ignition or detonation, often from low-octane fuel or carbon buildup

Engine knocking is caused by pre-ignition or detonation — the fuel-air mixture igniting too early or unevenly — often due to low-octane fuel or carbon deposits.

Question 5: What does hydroplaning mean and at what condition does it most commonly occur?

Loss of tire traction when a water layer separates tires from the road (Correct answer)
Brakes overheating when driving through deep puddles
Aquatic debris blocking the exhaust system
Engine overheating in hot weather, especially above 90°F

Correct answer: Loss of tire traction when a water layer separates tires from the road

Hydroplaning occurs when tires ride on a film of water rather than making contact with the road surface.

Question 6: What is the effect of doubling your speed on your vehicle's kinetic energy and stopping distance?

Kinetic energy doubles; stopping distance triples
Both double
Both triple
Both quadruple (Correct answer)

Correct answer: Both quadruple

Kinetic energy increases with the square of speed, so doubling speed quadruples kinetic energy and approximately quadruples stopping distance.

Question 7: Which drug category, besides alcohol, is most frequently detected in fatally injured drivers in the U.S.?

Opioids
Hallucinogens
Cannabis (marijuana) (Correct answer)
Stimulants such as cocaine

Correct answer: Cannabis (marijuana)

Cannabis is the most frequently detected illicit drug among fatally injured drivers in the U.S., impairing depth perception, reaction time, and divided attention.

Question 8: At an uncontrolled intersection where two vehicles arrive at the same time, who has the right-of-way?

The vehicle on the right (Correct answer)
The larger vehicle
The vehicle traveling faster
The vehicle on the left

Correct answer: The vehicle on the right

When two vehicles reach an uncontrolled intersection simultaneously, the driver on the left must yield to the driver on the right.

Question 9: What is the general speed limit on a rural two-lane road in most U.S. states when no posted sign is visible?

65 mph
45 mph
55 mph (Correct answer)
35 mph

Correct answer: 55 mph

Most U.S. states set a default speed limit of 55 mph on rural two-lane undivided highways when no sign is posted.

Question 10: Statistics show that impaired driving crashes peak during which time period?

Monday through Wednesday morning rush hours
School zone hours on weekday mornings
Late night and early morning hours, especially on weekends (Correct answer)
Early afternoon on weekdays

Correct answer: Late night and early morning hours, especially on weekends

NHTSA data consistently shows that alcohol-related fatal crashes peak between midnight and 3 a.m. on weekends, coinciding with bar and restaurant closing times.

Question 11: What is the minimum safe following distance recommended when driving at highway speeds in normal conditions?

1 second
2 seconds
3 seconds (Correct answer)
5 seconds

Correct answer: 3 seconds

A minimum 3-second following distance is recommended at highway speeds to allow adequate reaction and braking time.

Question 12: A pedestrian signal displaying an orange hand means:

Signal is malfunctioning — pedestrians have the right of way
Pedestrians should not begin crossing; finish if already started (Correct answer)
Pedestrians should increase their pace to finish crossing
Pedestrians must stop on the sidewalk immediately

Correct answer: Pedestrians should not begin crossing; finish if already started

The flashing or steady orange hand tells pedestrians not to start crossing; those already crossing should finish before the signal changes.

Question 13: What is the legal blood alcohol content (BAC) limit for non-commercial adult drivers in most U.S. states?

0.08% (Correct answer)
0.10%
0.15%
0.05%

Correct answer: 0.08%

A BAC of 0.08% or higher is legally impaired for non-commercial adult drivers in most states.

Question 14: What effect does drowsy driving have on reaction time, and what is the recommended action?

Drinking coffee while driving fully restores alertness for the remaining trip
Drowsy driving impairs reaction time similarly to alcohol; pull over and rest in a safe location (Correct answer)
Drowsy driving minimally affects reaction time; just open the window for fresh air
Increasing the radio volume is proven to counteract driver fatigue safely

Correct answer: Drowsy driving impairs reaction time similarly to alcohol; pull over and rest in a safe location

Research shows drowsy driving impairs judgment and reaction time to a degree comparable with alcohol intoxication; stopping to rest is the only safe remedy.

Question 15: What is the purpose of a feasibility study in Directorate-General for Traffic Test project planning?

To create a marketing plan
To determine if a project is viable and worth pursuing (Correct answer)
To start the project immediately
To assign team roles

Correct answer: To determine if a project is viable and worth pursuing

A feasibility study evaluates whether a project is technically, financially, and operationally viable before committing resources.

Question 16: How does aggressive braking at traffic lights contribute to environmental harm?

It overheats the catalytic converter, reducing its effectiveness
Both A and C (Correct answer)
It wastes the kinetic energy already expended on acceleration, requiring more fuel to restart
It deposits rubber particles that wash into storm drains

Correct answer: Both A and C

Aggressive braking wastes fuel energy invested in acceleration and deposits tire rubber microplastics that enter waterways via runoff.

Question 17: At a T-intersection where no signs or signals are present, who must yield?

The driver arriving first has the right-of-way
The driver on the terminating road must yield to traffic on the through road (Correct answer)
The driver turning left always yields
The driver on the through road

Correct answer: The driver on the terminating road must yield to traffic on the through road

At a T-intersection, vehicles on the road that ends (the stem of the T) must yield to vehicles on the through road.

Question 18: A white rectangular sign with the message 'SPEED LIMIT 35' is classified as what type of sign?

Service sign
Regulatory sign (Correct answer)
Warning sign
Guide sign

Correct answer: Regulatory sign

Regulatory signs are white rectangles that inform drivers of traffic laws they must obey, including speed limits.

Question 19: When must a driver yield to a pedestrian in a crosswalk?

Only when there is a crossing guard present
Whenever a pedestrian is in or entering a crosswalk, marked or unmarked (Correct answer)
Only at marked crosswalks with painted lines
Only when the pedestrian has a walk signal

Correct answer: Whenever a pedestrian is in or entering a crosswalk, marked or unmarked

U.S. law requires drivers to yield to pedestrians in both marked and unmarked crosswalks at intersections.

Question 20: What does a 'speed advisory sign' (yellow diamond) indicate compared to a regulatory speed limit sign?

It overrides any posted speed limit in the area
It is legally enforceable just like a speed limit
It recommends a safe speed for a curve or hazard but is not legally binding (Correct answer)
It applies only to trucks and buses

Correct answer: It recommends a safe speed for a curve or hazard but is not legally binding

Advisory speed signs (yellow) suggest a safe speed for conditions like curves but carry no legal penalty, unlike regulatory white signs.

Question 21: When a school bus is stopped with its red lights flashing and stop arm extended on a two-lane road, what must approaching drivers in BOTH directions do?

Stop only if approaching from behind the bus
Yield only if children are visible
Stop and remain stopped until the bus resumes motion or the arm is retracted (Correct answer)
Slow to 15 mph and proceed cautiously

Correct answer: Stop and remain stopped until the bus resumes motion or the arm is retracted

On a two-lane road with no median, all traffic in both directions must stop for a school bus loading or unloading children.

Question 22: If you are driving at 60 mph, approximately how many feet does your vehicle travel per second?

88 feet (Correct answer)
44 feet
110 feet
60 feet

Correct answer: 88 feet

At 60 mph, a vehicle travels approximately 88 feet per second, which is why adequate following distance is critical.

Question 23: Why should you avoid 'riding the clutch' in a manual transmission vehicle?

It wastes fuel by keeping the engine revving
It causes premature clutch wear by creating friction (Correct answer)
It damages the transmission fluid
It overheats the brakes

Correct answer: It causes premature clutch wear by creating friction

Riding the clutch keeps the clutch disc partially engaged, creating constant friction that accelerates wear and shortens clutch life significantly.

Question 24: What is the correct depth for chest compressions in adult CPR?

3.5 inches
1 inch
0.5 inches
At least 2 inches (about 5 cm) (Correct answer)

Correct answer: At least 2 inches (about 5 cm)

Chest compressions for adults must be at least 2 inches (5 cm) deep to effectively circulate blood to vital organs.

Question 25: How often should you check your tire pressure?

Once a year during a vehicle inspection.
At least once a month. (Correct answer)
Only before long trips.
Never, unless the tire looks flat.

Correct answer: At least once a month.

You should check your tire pressure at least once a month, as well as before long trips. Proper tire pressure is crucial for vehicle safety, fuel efficiency, and tire longevity. Under-inflated or over-inflated tires can lead to poor handling, increased wear, and a higher risk of blowouts, making regular checks an essential part of vehicle maintenance.

DGT Theory Test (Examen Teórico DGT)

The official Spanish driving theory test administered by the Directorate-General for Traffic (DGT), required to obtain a Category B driving licence in Spain. Candidates must answer 30 multiple-choice questions covering traffic law, road signs, speed limits, priority rules, and safe driving behaviour.

Questions

25 min

Time Limit

90%

To Pass

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