What is the purpose of 'Turn and stop lights' in traffic control?

The purpose of 'Turn and stop lights' in traffic control is to communicate intentions to other drivers. These lights are essential for signaling a driver's actions, such as when a vehicle is preparing to stop or make a turn. By indicating these intentions through specific light patterns, other drivers can react accordingly, improving overall traffic flow and reducing the likelihood of accidents. This clear communication is vital in maintaining safety on the roads, as it helps to inform surrounding vehicles of upcoming changes in movement, thus allowing them to adjust their own driving in response. The other options may relate to broader aspects of traffic management or vehicle performance but do not specifically address the primary function of turn and stop lights.