If an oncoming vehicle has started to turn left in front of you?

If an oncoming vehicle has started to turn left in front of you, you should reduce your speed and be prepared to stop. Maintain awareness of the vehicle's position and any pedestrians or cyclists that may also be affected by the turn. Ensure you have a clear path before proceeding, and be cautious of any sudden movements from the other driver. Always prioritize safety and the right of way.