When stopped for a DWI or DUI, if you refuse a chemical test, then you will be written up for a DUI refusal. But, there is one exception to that rule. Missouri law allows a driver twenty (20) minutes to contact a lawyer before being tested. If you get pulled over and are worried about getting a DUI or DWI, contact our office at 816-514-4949 or www.Hoorfarlaw.com.