All they have to prove is that you were driving with marijuana in your system to convict you of OWI. They will need some type of chemical test result to show that, either a blood or urine test. They can't just take your word for it. Are you sure you've been charged with OWI? If so, make sure you retain the services of a good DUI attorney in your area because a lot is at stake. While jail for first time offenders is still rare, it's becoming more common place than it used to, especially in certain jurisdictions.
Answered on Mar 14th, 2013 at 3:46 PM