Is the left turn signal activated by moving up or down?

[RosalieAnn]

To activate the left turn signal, move the lever downward. Below is an introduction to turn signal knowledge: 1. Overview: The turn signal is a crucial indicator light activated when a motor vehicle turns, alerting surrounding vehicles and pedestrians. The turn signal bulb uses a xenon tube, controlled by a microcontroller circuit that enables alternating left-right flashing. The turn signal employs a flasher unit to achieve blinking. It can be mainly categorized into three types: resistance wire type, capacitor type, and electronic type. 2. Structural Principle: The resistance wire type can be further divided into thermal filament type (electrothermal) and vane type (spring-loaded), while the electronic type includes hybrid (relay with contacts combined with electronic components) and fully electronic (relay-free). For example, the spring-loaded flasher utilizes the thermal effect of electric current, using thermal expansion and contraction as the driving force to create sudden movements in the spring strip, thereby connecting and disconnecting contacts to achieve light blinking.