When should a driver use turn signals?

The use of turn signals is a critical aspect of safe driving. Drivers should use turn signals anytime they are changing lanes, turning, or merging because it communicates their intentions to others on the road. This practice helps to improve situational awareness and reduce the likelihood of accidents, as other drivers can anticipate what actions to expect. Proper signaling promotes a safer driving environment by allowing for better coordination among vehicles.

While there are scenarios, such as merging onto highways, when signaling is particularly important, it's not limited to just those situations. Proper use of turn signals should extend to all instances of lane changes and turns. The option suggesting that signals should be used only in heavy traffic is misleading, as communication of intent is vital in all traffic conditions to enhance overall road safety.