If you get charged, plead not guilty and request a trial. Once you get the notice of trial then you can request disclosure (witness reports and witness statements and officers notes).
Police have up to 6 months to lay a charge. If you have not heard anything in 6 months, then don't worry about it.
+++ This is not legal advice, only my opinion +++
But I still wondering what can he possibly charge with me. After looking through the Highway Traffic Act his stop sign is only valid when dealing with passengers. I'm just asking to see if I missed something out in the Act or misinterpreted it. Thanks