If you have been arrested for suspicion of driving under the influence, you have not yet been charged or convicted. This is a very important distinction. When you are arrested, it is only because officers believe there may be enough evidence to find you guilty of what they are charging you with. The case is then forwarded to prosecutors who will review the evidence and make a determination as to whether there really is enough to bring a formal case against you. The first priority of a Los Angeles DUI lawyer is to demonstrate that there is not enough evidence to formally bring a case against you. That is why the earlier you hire a Criminal Lawyer to defend you, the quicker they can get to work and fight to drop the charges before they are even made.
With an attorney on your side, they can act swiftly to contact the arresting police department and speak to the officer about the evidence they have against you. They can gather information efficiently and quickly because they know the officers and are familiar with the police department. But more importantly, the police department has a good working relationship with the attorney and so they are more willing to cooperate and work with the attorney in getting them the information they need.
With the evidence in hand, the attorney can then do a thorough review of what happened the night of the arrest and why the officer believes there is enough to charge you with a formal DUI. The attorney will find holes in the legal process and weaknesses in the arguments that prosecutors can potentially make.