Signals, Signs and Pavement Markings · Pavement Markings
White Stop Lines
Stop lines show where you must stop for a stop sign or red light. You must stop your vehicle before any part of it crosses the line before the crosswalk.
Important
Stop lines are the wide white lines painted across a traffic lane. Stop there before entering the intersection.
Learn it with your state's rules
DMV One Way teaches the whole handbook slide by slide and checks it with practice questions.