How many seconds in advance should the turn signal be activated?

[Jessica]

Generally, the turn signal should be activated about 10-20 seconds in advance before changing lanes, which gives the vehicles behind sufficient reaction time and is more conducive to traffic safety. Left turn signal: When turning left, changing lanes to the left, preparing to overtake, leaving a parking spot, or making a U-turn, the left turn signal should be activated in advance. Right turn signal: When turning right, changing lanes to the right, returning to the original lane after overtaking, or parking by the roadside, the right turn signal should be activated in advance. Liability for accidents: If an accident occurs because the driver failed to activate the turn signal, it is highly likely that the driver will bear the primary or full responsibility for the accident.