The ticket the officer gave you is a summons to appear in court. The summons is for the defendant to appear before a Justice to respond to the charge.
Commonly this is called the "set date", on the set date it is just a date to enter a plea to the charge, the police officer does not have to be in attendance and the trial will not happen on that date.
On the set date the prosecutor may reduce the charge, but it is their option to do so. I suggest that you ensure that the fine has been paid and that you have the receipts with you.
If the prosecutor does not accept a reduce charge, this would be a charge where you should ensure that you are represented by a knowledgeable and confident paralegal as the implications of being convicted are serious.
As well a conviction for this charge will dramatically affect your insurance rates.
Retired Toronto Traffic Officer, Hit & Run Squad Detective,
Breathalyzer Tech, Radar/Highway Patrol