Nevada police will take away your driver's license immediately if you are arrested for DUI and: Your post-arrest DUI breath test shows a BAC of .08% or greater; or You refuse to take a breath or blood test. The officer will forward your license to the Nevada DMV, and you will be given a temporary driving permit good for seven days. To contest the loss of your license, you must request a hearing from the DMV in writing before your seven-day temporary license expires. If the seven days pass without you requesting the DMV hearing, your three-year license revocation will begin. Note that you can delay a license revocation by electing to take a blood test rather than a breath test following your DUI arrest. Since it takes a few weeks for blood test results to come back, you can continue driving on your license during this waiting period.   If the blood results show you were over the legal limit for alcohol and/or drugs, the DMV will notify you by certified mail. The DMV notice will say that your license will be revoked unless you request a DMV hearing in writing within seven days.