Do I need to use turn signals when driving on a curve?

[LaJonathan]

Turn signals are not required when driving on a curve. Situations where turn signals are necessary: 1. When changing lanes, turn signals should be used to alert vehicles behind. 2. When overtaking (according to regulations, overtaking must be done from the left, so first use the left turn signal, and when returning to the original lane after overtaking, use the right turn signal). 3. When making a U-turn, use the left turn signal to indicate to vehicles behind. 4. When exiting a roundabout (no signal is needed when entering, but use the right turn signal when exiting). 5. When entering or exiting main roads, ramps, or highways. 6. When pulling over to park, use the right turn signal; when leaving, use the left turn signal. 7. When spotting an available parking space in a parking lot.