Which side to signal when overtaking?

[DelElijah]

When overtaking, turn on the left turn signal; when returning to the original lane, turn on the right turn signal. Here is relevant information: Precautions: The "Road Traffic Safety Law of the People's Republic of China" stipulates that overtaking is strictly prohibited in the following situations: at intersections, steep slopes, sharp curves, and other hazardous sections; during adverse weather conditions such as rain or fog; when the vehicle ahead signals a left turn, U-turn, or is overtaking another vehicle; and in areas marked with no-overtaking signs. Downshifting for overtaking: When downshifting to overtake, it is recommended to downshift sequentially rather than skipping gears to minimize the jerking caused by mismatched speed and gear. Additionally, while manually downshifting, lightly pressing the accelerator to increase engine RPM can help reduce the discrepancy between speed and gear.