How far before an intersection must a driver signal when planning to turn right?

When preparing to make a right turn at an intersection, the appropriate distance for signaling is 30 meters. This distance allows other road users, including vehicles and pedestrians, to anticipate the driver's intention to turn. Signaling well in advance is crucial for safety and helps to prevent accidents by providing clear communication on the road. Drivers must ensure that they signal early enough to give following traffic and pedestrians ample time to react accordingly. This practice aligns with safe driving protocols and traffic regulations in Japan, contributing to an overall safer driving environment.