The turn signal is called "blinkers" because of its blinking working characteristic, and this term intuitively describes the physical action of the light turning on and off intermittently. In automotive terminology, "blinker" and "turn signal" have exactly the same function-both are used to convey the intention of turning or changing lanes to other road users, but the former places more emphasis on the dynamic effect of the light. This wording habit can be traced back to the design principle of early signal devices: the light is controlled by a circuit to turn on and off rapidly to form a visual cue, and its blinking frequency is usually 60 to 120 times per minute to ensure it can be clearly recognized both in daylight and at night. Technically, the turn signal system of modern vehicles consists of a relay (or electronic module), a bulb/LED light source, and a reflector. The blinking mechanism can be achieved either through a hot metal sheet relay or controlled by programming the body control module. Although alternative terms such as "indicator" exist in different regions, "blinker" is still widely used in daily language in many countries including Malaysia due to its vividness.
