If you read HTA 154.1 http://www.ontario.ca/laws/statute/90h08#BK244 I do not see anything that relates to number of seats in a vehicle.
So assuming Young St is not a Kings Highway (you will have to verify this) then you should do the following:
- Plead NOT GUILTY and ask for a Trial with the officer present.
- Once you get your Notice of Trial, request disclosure (officers notes).
- Within the first 6 months, do NOT ever mention to the prosecutor that it is the wrong charge and that Young Street is not a Kings Highway. If you tell the prosecutor, then they can drop the charge and re-issue the correct charge. However they can only do this within the first 6 months. So keep your mouth shut about this!
- AFTER the 6 month period you can contact the prosecutor (send a fax to the Clerk of the Court and the Prosecutor) and advise them that Young Street is not a Kings Highway and ask if they will drop the charge.
- Worst case is they say "no" and you end up in court and you tell the JP that the charge is incorrect because Young Street is not a Kings Highway.