what you have been charged with and compared to what mates of mine have been done for and gone to court for you should be able to get off quite lightly i wouldnt even bother with a lawyer rock up well dressed not over the top tell them what happened you dont think you did anything wrong, maybe your wheels slipping on the tram tracks and that's it. If your driving record for driving is good should go well.
be keen to know your result, i thought it was 6 months you could be summoned after the offence not 12.. that sucks
good luck