I got a ticket for stop sign and seat belt. I challenged both in court, I won the seat belt offence.. but the stop sign I couldn't beat. He can challenge it in court himself if he is confident he is innocent. However, he will need to prove reasonable doubt. Also, I dont know how it is there.. but here in Montreal you can request to get a copy of the police report prior to the court date/hearing. My seatbelt ticket was poorly documented but my stop sign infraction was extremely detailed. That will make a huge difference on whether or not you should challenge it. If you can make the judge believe there is reasonable doubt, that is your only chance to win. If the cop poorly documented the incident, you will be better suited on fighting and winning it in court. Just be sure to find out if you lose in court if the fees remain the same or if they double. Get a copy of the report prior, if poorly documented, research your defense online and fight it. If its well documented by the officer, you might rather pay it and not make the same mistake again.