What should you do if you observe a driver swerving on the road?

When observing a driver swerving on the road, staying back and calling the police if necessary is the most responsible action. This choice prioritizes safety, both for yourself and for others on the road. Swerving often indicates that the driver may be impaired, distracted, or experiencing a medical emergency, which poses a danger to all road users. By keeping your distance, you minimize the risk of an accident while monitoring the situation. If the driver’s behavior seems dangerous, notifying law enforcement allows them to intervene appropriately and ensure the safety of everyone involved.

Flashing your headlights could potentially startle the swerving driver, leading to erratic behavior, while trying to overtake them quickly increases the risk of a collision, particularly if the driver's actions are unpredictable. Ignoring the situation completely overlooks the potential danger posed by the driver's behavior, which could have serious consequences. Thus, the selection of staying back and contacting the authorities emphasizes a proactive approach to road safety.