What should you do when an oncoming vehicle crosses the centerline while making a left turn?

When an oncoming vehicle crosses the centerline while making a left turn, waiting for the oncoming traffic to clear is the safest and most responsible action to take. This approach ensures that you avoid a potential collision with the oncoming vehicle, which may not be aware of your presence or may misjudge the maneuver. By remaining patient and giving way to the oncoming traffic, you are prioritizing safety for all road users, including yourself and any passengers in your vehicle.

This situation necessitates a cautious response, as speeding up to get ahead can lead to a dangerous scenario, particularly if the other driver doesn’t see you or doesn't accurately judge their clearance. Signaling to the other driver in this situation might not be effective or necessary, as they may be preoccupied with their own maneuvering. Making a left turn without hesitation is also unwise as it could result in an accident, particularly if the oncoming vehicle is positioned in a way that creates a hazard. Therefore, waiting for the oncoming traffic to clear is the most pragmatic and safe choice.