Even if the stop is lawful, you should challenge the accuracy of the blood/ breath test results of equipment used to measure you blood alcohol content. The first thing an experienced DUI lawyer should do is demand the periodic determination of accuracy documents that all law enforcement agencies and crime labs are required to maintain to prove that their blood/breath /urine test instruments were working

Even if You are Seen Driving, You May Be Entitled To Challenge the Lawfulness of the Traffic Stop. The first reason you need a lawyer if you are arrested for  of DUI is that when you are arrested for drunk driving, the prosecution has the burden of proof that you were lawfully stopped in the first place.  An experienced lawyer should always review the arrest