Signals, Signs and Pavement Markings · Pavement Markings
White Lane Lines
White lane lines separate lanes of traffic moving in the same direction.
Important
White lane markings separate multiple lanes of traffic going in the same direction. Most roads with more than two lanes have broken white lines to separate the lanes. You may cross a broken white line when it is safe to change lanes, but you should not cross a solid white line.
Learn it with your state's rules
DMV One Way teaches the whole handbook slide by slide and checks it with practice questions.