How can turn signals contribute to driving safety?

Turn signals play a crucial role in driving safety primarily by communicating intentions to other drivers. When a driver uses turn signals, they indicate their upcoming maneuver, whether it is a turn or a lane change. This communication helps to prevent misunderstandings and potential collisions, as other drivers can anticipate that the signaling driver is about to alter their course.

For instance, if a vehicle is preparing to turn left, activating the left turn signal warns vehicles behind and beside it that they should be prepared for that action. This clarity reduces the likelihood of accidents caused by confusion or surprise, making the roadways safer for everyone.

The other choices may seem relevant at first glance; however, improving visibility in bad weather is not a primary function of turn signals. They are not designed to indicate the number of passengers in a vehicle, and they do not provide information about vehicle performance. Therefore, the key contribution of turn signals to driving safety lies in their ability to effectively communicate a driver's intentions to others on the road.