Speeding Tickets: Dismissal

My question involves a traffic ticket from the state of: Washington, I believe the prosecuting attorney's office has failed to meet my discovery requests, and I have a scheduled court date next week, can i ask at my trial for dismissal on those grounds or do I have to submit in writing prior to my court date? I would prefer to ask at my trial, instead of missing any more unnecessary days off.

Thanks,
Sparky

Speeding Tickets: Dismissal