Turn signal indicators are mandatory for motor vehicles produced after which model year?

Turn signal indicators became mandatory for all motor vehicles produced after the model year 1959 as a result of the growing need for improved safety features on vehicles. Before this regulation, many vehicles were equipped with such indicators, but it was not a universal requirement. The decision to mandate turn signals was influenced by the increasing number of vehicles on the roads and the need for clearer communication between drivers to reduce accidents.

This regulation formed part of a broader movement during the late 1950s toward enhancing vehicle safety and ensuring that all new vehicles included essential safety measures. Therefore, vehicles manufactured after 1959 must include turn signals as standard equipment to comply with safety regulations.