Drunk driving is a very serious offense that is capable of destroying numerous lives in one fell swoop. While it's ultimately up to law enforcement to identify and apprehend drunk drivers, it also helps for ordinary citizens to be alert and aware when on the road. In this case, MADD offers the following advice on how you can spot a drunk driver and what you should do about it.
First and foremost, never pursue a drunk driver on your own. If you notice any of the following signs, the best thing you can do is to take note of the vehicle and contact law enforcement right away from a safe area. Drunk drivers often exhibit risky driving behaviors, including swerving in and out of lanes. The person may also appear to accelerate or decelerate at an abnormal pace or even stop for no reason. Other signs include driving with headlights off, driving too slowly, making illegal turns, driving on the wrong side of the road, or signaling incorrectly.
If you notice these behaviors, keep your distance. You run the risk of being involved in an accident yourself if you get too close. Try to get as much of the license plate as you can, which can be extremely helpful when calling the police. If you don't have a clear view, note the make and model of the vehicle, as well as any other distinguishing marks. Finally, pull over and contact the police. Don't forget to provide the location where you saw the suspected drunk driver, as well as the behavior that caught your attention.
If you encounter a person that insists on driving even after they've been drinking, there are other steps you can take. Offer a ride or recommend that the person arrange a ride share or taxi. If the person is at your home, you can also offer a place to stay for the night. Refrain from being confrontational, as this will only cause the drunk driver to become more insistent. If the person refuses to listen to reason, contact the police.