Free CDE Traffic Laws & Road Safety Questions and Answers — Questions and Answers

Question 1: What does a red traffic light mean?

Stop (Correct answer)
Go
Yield
Speed up

Correct answer: Stop

A red traffic light is a universal and unambiguous signal in traffic control that mandates all vehicles to come to a complete stop before the intersection or designated stop line. This rule is absolutely crucial for preventing collisions, ensuring pedestrian safety, and maintaining the orderly and safe flow of traffic.

Question 2: What is the legal blood alcohol concentration (BAC) limit for drivers over 21 in most states?

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

Correct answer: 0.08%

The legal blood alcohol concentration (BAC) limit for drivers over 21 in most U.S. states is 0.08%. Driving with a BAC at or above this level is considered 'per se' illegal, meaning impairment is presumed without further proof. This standard is crucial for preventing impaired driving and ensuring road safety.

Question 3: When should you use your turn signals?

Only when turning left.
Only when parking.
Before turning or changing lanes (Correct answer)
Only in heavy traffic.

Correct answer: Before turning or changing lanes

You should always use your turn signals before turning or changing lanes. This action clearly communicates your intentions to other drivers and road users, giving them time to react accordingly. Signaling is a fundamental safety practice that helps prevent collisions and promotes a smooth flow of traffic.

Question 4: What should you do when approaching a pedestrian crossing?

Speed up to cross quickly.
Honk to warn pedestrians.
Yield and stop if necessary (Correct answer)
Ignore pedestrians.

Correct answer: Yield and stop if necessary

When approaching a pedestrian crossing, you must yield and stop if necessary to ensure the safety of pedestrians. Pedestrians generally have the right-of-way in marked crosswalks and often at intersections. This rule is critical for preventing accidents and promoting a safe environment for all road users.

Question 5: What is the safe following distance rule?

1-second rule.
3-second rule (Correct answer)
5-second rule.
No specific rule.

Correct answer: 3-second rule

The safe following distance rule commonly taught is the 3-second rule. This guideline provides enough time and space for a driver to react safely to sudden stops or hazards ahead. It should be increased in adverse conditions to maintain an even greater safety margin.

Question 6: When is it illegal to pass another vehicle?

On straight roads.
On hills, curves, or solid yellow lines (Correct answer)
At intersections.
On highways.

Correct answer: On hills, curves, or solid yellow lines

It is illegal and extremely dangerous to pass another vehicle on hills, curves, or when a solid yellow line is present. These areas have limited visibility, making it unsafe to determine if oncoming traffic is present. Solid yellow lines specifically designate no-passing zones to prevent head-on collisions and ensure safety.

Question 7: What does a flashing yellow traffic signal mean?

Stop completely.
Proceed with caution (Correct answer)
Speed up.
Yield to all traffic.

Correct answer: Proceed with caution

A flashing yellow traffic signal means you should proceed with caution. Drivers must slow down and be prepared to stop if necessary, as there may be a hazard or conflicting traffic. It indicates a need for increased awareness, but a full stop is not required unless conditions demand it.

Question 8: What should you do if your vehicle starts to skid?

Brake hard immediately.
Turn in the direction of the skid (Correct answer)
Turn opposite to the skid.
Accelerate.

Correct answer: Turn in the direction of the skid

If your vehicle starts to skid, you should gently turn the steering wheel in the direction of the skid. This technique helps to regain control by allowing the front wheels to point where you want to go, rather than fighting the skid. Braking hard or turning against the skid can worsen the loss of control.

Question 9: What is the penalty for using a mobile phone while driving in many states?

No penalty.
Fines or points on license (Correct answer)
Reward.
Warning only.

Correct answer: Fines or points on license

In many states, using a mobile phone while driving carries penalties such as fines or points on your license. These laws are in place to combat distracted driving, which significantly increases the risk of accidents. Penalties aim to deter this dangerous behavior and enhance road safety for everyone.

Free CDE Traffic Laws & Road Safety Questions and Answers

What does a red traffic light mean?