Is the upper one the left turn signal or the right turn signal?

[ArabellaAnn]

The upper one is the left turn signal. Below is an extended introduction about turn signals: 1. Basic information: The turn signal bulb uses a xenon tube, controlled by a microcontroller circuit, with left and right alternating flashes working uninterrupted. The turn signal uses a flasher to achieve light blinking. The timing of its activation should be well controlled; it should be turned on about 100 meters before the turning intersection. If changing lanes, it needs to be activated even earlier. Turning it on too early may give the following vehicle the illusion of 'forgetting to turn off the turn signal,' while turning it on too late may cause accidents due to insufficient reaction time for the following vehicle or pedestrians. 2. Types and functions: The turn signal uses a flasher to achieve light blinking. It can mainly be divided into three types: resistance wire type, capacitor type, and electronic type. The turn signal is an important indicator light that is activated when the vehicle is turning to alert surrounding vehicles and pedestrians.