Yes and no. When you are issued a Florida Drivers License, you agree to submit to any chemical tests if requested by a police officer.  If a police officer is investigating whether you are driving under the influence (DUI), the officer cannot physically force you to give a breath sample.  You may refuse to submit a breath or urine sample, but there are immediate administrative penalties with the DMV if you do so when the officer had sufficient probable cause to request a breath sample.   If you are stopped for a second DUI and you refuse a breath test a second time, the administrative penalties are harsher even if you are acquitted in court.   Every case is unique and in order to get a clear answer for your case, you should call Fort Lauderdale DUI Attorney Joseph Fasone.  The initial consultation is free of charge.