What should you be prepared to do if you see someone driving against traffic?

When encountering a situation where someone is driving against traffic, the most prudent action is to slow down and be ready to stop. This response is critical for ensuring safety and preventing accidents. Such drivers may not be aware of their mistake or could be in a state of confusion, which makes their future movements unpredictable. By reducing your speed and preparing to stop, you provide yourself with the best chance to react appropriately—whether that means yielding to the driver, changing lanes if safe, or stopping completely to avoid a collision.

Calling the police may be a reasonable course of action after ensuring your own safety, but it should not take precedence over your immediate need to control your own vehicle. Signaling the driver to turn around can be dangerous, as it may distract them or cause them to react unexpectedly. Ignoring the situation, even if the driver appears distant, can lead to a tragic accident if they suddenly enter your path. The key takeaway is that maintaining caution and control over your vehicle is paramount in such scenarios.