After a lawful arrest, an officer has a right to search you and your belongings, including your car if you are arrested in it. However, the officer generally has no legal right to then go to your home to search it unless a search warrant is granted by a judge or you give your permission for that search.If an officer has reasonable cause to believe you are operating a motor vehicle under the influence of alcohol or drugs, he or she may ask you to take a Breathalyzer test. You may demand the opportunity to take a blood test too, but at your own expense. If you cannot give a breath sample because of injuries or unconsciousness, a blood or urine sample may be taken. You may refuse the breath, blood or urine test, but if you do, your driver's license will be suspended for six months even if you are not guilty of a crime. If you submit to the test, the results may be used in evidence. A refusal is also admissible.