“Turn Not In Safety”

I was charged with Turn not in Safety

Basically

I was turning right at a stoplight (red to me) onto a 4 lane road / 2 going eash 2 going west (Dundas Street Oakville)

At the time of turning I checked my left side - there were no cars in the lane approcahing lane - there were cars in the inner lane

The car that hit me was following behind my witness at a fast speed and moved into the right lane to pass the witness At the same time as I was making my right turn (after I had proceeded into the intersection). He collided into the back of me

I didnt know what had happened until the witness explained it to me

I was charged with TURN NOT IN SAFETY

The other guy didnt say that he was speeding or that he made a last minute decision to pass on teh right

Do I have a chance to win this?