The term highway applies to all roadways. There are two demerit 2 points. Because of the dermerit points it means this is a provincial issue. Because it's a provincial matter, the French Language Services Act is triggered. This requires all communications to be in both languages even if you don't speak both languages.
Because the cop never spoke to you in both languages, French and English, and because the text he added to the ticket are not in both Frenh and English, the ticket is not complete and regular on its face. Therefore, the ticket cannot be enforced.
Therefore, do not respond to the ticket. If you don't respond the court cannot fix theerrors and must quash the proceeding and ticket against you. If they do not and they convict you, you can appeal it and will win.
If you send in the notice that you intend to defend yourself at a trial, the court can then fix the errors on the ticket and convict you.
Use your own judgment, but my advice is to not respond to the ticket at all.