Many traffic courts in BC do not have Crowns to prosecute cases, it is just the officer in a tribunal setting. In that case a redirect may not happen unless the justice directs a question to the officer after presenting evidence in chief and cross examination. Provincial offences such as the MVA don't offer the justice much logic leeway, either the elements of the offence are presented or they are not. An astute defence council will recognize discrepancies in evidence, a lay person may not. Many justices will assist the unrepresented but well prepared defendant.