How many meters before turning or changing lanes must a driver use a directional signal on expressways?

Using a directional signal at least 100 meters before turning or changing lanes on expressways is crucial for ensuring safe driving practices. This distance provides adequate time for other drivers to notice the signal and react accordingly, which helps to prevent accidents and maintain smooth traffic flow.

Expressways often involve higher speeds and increased traffic volumes, making it essential for drivers to communicate their intentions well in advance. By signaling 100 meters prior to a maneuver, drivers allow enough time for both themselves and surrounding vehicles to adjust their movements safely. This practice enhances overall road safety, promotes awareness, and encourages a cooperative driving environment.