Section 316.193, Florida Statutes, requires ignition interlock devices to be installed on the vehicles of certain persons convicted of DUI. A first DUI conviction with a minor in the car or a blood alcohol level of .15 or more requires Ignition Interlock for at least six months. A second DUI conviction requires Ignition Interlock use for at least one year. A third DUI conviction requires Ignition Interlock use for two years or more. The ignition interlock program affects those arrested and convicted of DUI after July 1, 2002, upon eligibility of reinstatement for a permanent or restricted driver license following their conviction of the DUI. The ignition interlock device is also required when a driver convicted of DUI applies for a restricted license for work or business purposes in the special supervision program (s. 322.271, F.S.). If the person is otherwise eligible, a driver license will be issued with a “P” restriction indicating interlock device is required. The required time period for interlock officially begins on the day the "P" interlock restriction is issued.