Should the left turn signal be up or down?

[AniyahAnn]

When making a left turn, the turn signal should be pushed downward. Function of turn signals: As signal lights, turn signals primarily serve to alert surrounding vehicles during daily driving, indicating an upcoming turn and prompting other vehicles to yield to avoid collisions. Whenever a vehicle needs to steer away from its current lane, the turn signal should be activated in advance - this is a fundamental principle of safe driving. Working principle of turn signals: Turn signal lamps use xenon tubes with microcontroller-controlled circuits that alternately flash left and right continuously. When voltage or current is applied to both ends of the electromagnetic relay coil, the magnetic flux generated by the coil passes through the magnetic circuit composed of the iron core, yoke, armature, and working air gap. Under the magnetic field's influence, the armature is attracted to the iron core's pole face, causing normally closed contacts to open and normally open contacts to close. When the voltage or current at both ends of the coil drops below a certain threshold and the mechanical reaction force exceeds the electromagnetic attraction, the armature returns to its initial state, with normally open contacts opening and normally closed contacts closing.