Traffic control devices are tools used to manage and direct the flow of vehicles and pedestrians on roads. These devices include traffic signs, traffic signals, and road markings. They help ensure safety by providing important information, such as speed limits and directions, and by controlling when vehicles and people can move. By following these devices, drivers and pedestrians can navigate roads more safely and efficiently. For example, a stop sign tells drivers to come to a complete stop, while a crosswalk indicates where pedestrians should cross the street. Overall, traffic control devices play a crucial role in maintaining order on our roads.