If you are overtaking a bicycle and an oncoming vehicle is approaching, you must:

When you are overtaking a bicycle and there is an oncoming vehicle, the safest and most responsible action is to slow down and allow the oncoming vehicle to pass first. This approach minimizes the risk of creating a hazardous situation for both the cyclist and yourself.

Cyclists have the same rights as motor vehicle operators and should be given adequate space when being overtaken. By waiting for the oncoming vehicle to pass, you can create enough room to safely pass the bicycle later. Attempting to speed up or pass in the same lane could result in a dangerous situation where there may not be enough space for both the cyclist and the vehicle, leading to potential collisions or accidents. Honking your horn does not guarantee safety and could startle the cyclist, making the situation more dangerous. Thus, slowing down is the most prudent and safety-conscious choice in this scenario.