tests.get-dpt-app

If you cannot see farther than 100 feet ahead of your vehicle due to rain, snow, blowing dust, smoke, or thick fog, then you are unable to safely drive faster than:

Adverse weather conditions can rapidly reduce visibility. If you cannot see farther than 100 feet ahead of your vehicle due to rain, snow, blowing dust, smoke, or thick fog, you cannot safely drive faster than 30 mph.