What happens if I refuse a blood or urine test?

What happens if I refuse a blood or urine test? If there was probable cause to pull you over, you lose your license for a year. Do the authorities have the right to impound my vehicle? If you were arrested in a public location where the vehicle would have been an impediment to traffic, parking, etc., then yes. (Can they), place me under arrest when I have not been involved in an accident, or failed to turn my headlights on moments before driving a well lit street? If you failed to turn your headlights on at dusk or after dark, that will give them an excuse to pull you over. If the traffic stop gave them evidence to believe you were intoxicated, they can arrest you. Advice: Talk to an attorney in your community about all the facts and hire one to represent you in this case.