Speed Limits and Traffic Laws Flashcards

What is the usual speed limit in a business district when no sign is posted?

Answer: 30 mph

Most states set a default speed limit of 25–30 mph in business districts when no speed limit sign is present.

When driving in fog, you should use:

Answer: Low-beam headlights or fog lights

Low-beam headlights or fog lights should be used in fog because high beams reflect off the fog and reduce visibility.

You are following a truck on the highway. What is the safest following distance?

Answer: At least 6 seconds

When following large trucks, maintain at least 6 seconds of following distance because trucks have large blind spots and longer stopping distances.

Hydroplaning occurs when:

Answer: Tires lose traction due to water on the road surface

Hydroplaning happens when tires ride on a thin layer of water and lose contact with the road, causing loss of steering control.

Which of the following is the safest action if your brakes fail?

Answer: Pump the brakes rapidly and downshift to slow down

If brakes fail, rapidly pumping the brake pedal may restore hydraulic pressure, and downshifting helps reduce speed.

What is the primary purpose of the three-second following distance rule?

Answer: To give yourself time to react and stop safely

The three-second rule provides enough time for a driver to perceive a hazard, react, and bring the vehicle to a stop safely.