A 4-minute lesson from the Illinois course. Read the rules and examples, follow the handbook page references, and check your understanding before you move on.
Bad weather cuts your traction and your view. The same habits apply every time: turn off cruise control, slow down, increase your following distance, and brake early and gently.
If you must drive in fog (it's not advisable):
Turn off cruise control and increase your following distance
Slow down, and slow more if you see lights; a car may be stopped or in the center
Use headlights on dim (low beam) or fog lights
Don't overdrive your headlights; stay within the limits of your vision
If fog is too dense, pull off the road and stop; don't creep along at 5-10 mph
Signal turns long in advance and brake early before stops
If you get stranded in winter, stay in your vehicle. Run the engine only briefly and open a window to prevent carbon monoxide poisoning. Keep the tailpipe clear of snow and debris.
A sudden downpour starts and your car begins to hydroplane. Don't slam the brakes. Try to regain control, and if you can't, lift off the accelerator and ride out the skid.
Check your understanding
Read the question, decide on an answer, then open it to check the explanation. These are Roadwise study questions based on the source handbook.
What lighting should you use in fog?
High beams for maximum visibility
Low beams or fog lights, not high beams
Hazard lights while driving
Only parking lights
Answer: Low beams or fog lights, not high beams
High beams reflect off fog and reduce visibility; use low beams or fog lights.