Weather and Hazardous Conditions Flashcards

You are driving on I-40 when heavy fog suddenly reduces visibility to near zero. What is the safest action?

Answer: Pull completely off the road, stop, and turn on hazard lights

In near-zero visibility you should pull completely off the roadway, stop, and use hazard lights until conditions improve.

Why does a road become most slippery during the first 10 to 15 minutes of rainfall?

Answer: Rain mixes with oil and dust on the surface, forming a slick film

The first minutes of rain lift accumulated oil and dirt off the pavement, creating an especially slick film before it washes away.

Your vehicle begins to hydroplane on a wet highway. What should you do first?

Answer: Ease off the accelerator and avoid braking suddenly

Easing off the gas lets the tires slow and regain contact with the road, while hard braking or steering can cause a skid.

At approximately what speed can hydroplaning begin on wet roads with worn tires?

Answer: As low as 35 mph

With standing water and poor tread, tires can begin riding on water at speeds as low as about 35 mph.

Which part of the road typically freezes first in cold weather?

Answer: Bridges and overpasses

Bridges and overpasses freeze first because cold air circulates both above and below the road surface.

When driving in heavy rain during the day, North Carolina law requires you to:

Answer: Turn on your headlights whenever your wipers are in use

North Carolina law requires headlights on whenever windshield wipers are in continuous use due to weather.

How should you adjust your following distance when driving on wet pavement?

Answer: Increase it well beyond the normal following distance

Wet pavement can double stopping distance, so you should leave a much larger gap than in dry conditions.