This site is for United States law. Look for a lawyer in Ontario.
The above answer, and any follow up comments or emails is for informational purposes only and not meant as legal advice.
Look for a lawyer in Ontario Canada to help you out. Although there may not be too much difference in the law, generally, you have a duty to see what has to be seen on a highway and to maitain a safe distance. The fact that you slammed into the back of a person's vehicle is enough to say that you were following too closely and worse not paying attention.
Be weary of any possible lawsuit that may be commenced by the other driver. If one starts, you will like be liable because you struck the other person in the rear
This response will not create an attorney-client relationship.
I suggest you ask a lawyer in Ontario if the officer is able to issue a ticket for offense he did not personally observe .
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