Safe driving · Stopping distances and Hazards
Rain, Fog or Snow.
Rain, Fog or Snow. Heavy rain, snowstorms or thick fog, may not allow you to see more than 200 feet ahead. In order to be safe, you should not drive more than 30 mph. Any time you cannot see the road ahead pull over in a safe place and wait until the weather clears.
Learn it with your state's rules
DMV One Way teaches the whole handbook slide by slide and checks it with practice questions.