Police officers are charged with keeping the cities and roads safe. One of their duties is to do their best to keep drunk drivers off the streets. In an effort to do this, cops look for certain behaviors when they are watching how people drive.
When a police officer sees something that indicates drunk driving, he or she will make contact with the driver. The basis for this is known as reasonable suspicion. This is a much different concept than probable cause. Here's what you need to know about drunk driving stops and reasonable suspicion: