What should you do to warn others when approaching a blind curve?

When approaching a blind curve, using your horn is an effective way to alert other drivers or pedestrians who may not be able to see you coming. This action can help enhance safety by providing a warning to anyone who might be in the area, as they may be unaware of your presence. Honking your horn communicates that you are approaching and encourages others to be cautious, which is particularly important in situations where visibility is limited.

In contrast, accelerating or increasing your speed could lead to a loss of control or reduce the time you have to react if an obstruction appears ahead. Turning on hazard lights is generally intended to indicate a vehicle is stopped or experiencing trouble, rather than signaling an approach. Therefore, using the horn is the most appropriate and effective method for warning others in this scenario.