When you say your "trial" is in 3 days, do you mean arraignment or the actual court trial? Another way to put it, is this the date shown on your ticket or the initial courtesy notice as the day (by which) you "promised to appear", or have you already responded to the courtesy notice as "not guilty" and THEN this date was set? If it's just arraignment, the officer will not be there, you will just need to plead, and the actual date for court trial will only then be set. If so, ask for a trial within 45 days.