Official Driving School Segment 1 Practice Test

Traffic control devices exist to give information to road users so they can act safely. Signs, signals, pavement markings, and barriers tell drivers when to stop, slow down, yield, or change lanes, and they alert people about pedestrians, hazards, or changing road conditions. This guidance helps create predictable behavior and reduces crashes, keeping everyone on the road safer. They aren’t about charging parking fees or creating detours, nor are they solely for pedestrians; their primary job is to inform drivers (and all road users) to drive and walk safely. For example, a red light means stop, a stop sign signals yielding the right-of-way, pedestrian crossing signs alert drivers to nearby pedestrians, and lane markings show where to drive or merge.