Reasonable suspicion means that the officer who stops you needs to be able to swear and testify to facts that led him to have a legal basis to pull you over for a crime or traffic violation. A seasoned DUI attorney will be able to analyze the traffic stop of your vehicle and determine whether you were legally stopped. Oftentimes, police officers will simply go on a hunch—this is not enough! There are common reasons given by police officers on their arrest reports to justify stopping someone and subsequently arresting them for DUI. Even if you fail to signal while changing lanes or turning, or you happen to weave within your lane or even outside your lane, there are no grounds for a traffic infraction. If the court rules that there was no legal basis for the traffic stop, then evidence will get suppressed and the charge is typically dismissed.