From CityNews Ottawa

The numbers were revealed during a presentation from OC Transpo's chief safety officer at a meeting of the city's transit committee, Thursday, Feb. 8.
"I was obviously not pleased to hear that number," said councillor for Barrhaven West David Hill on Wake Up with Rob Snow. "Anything above zero is unacceptable."
The chief safety officer defined the incidents as involving physical violence, possibly with the use of a weapon - essentially anything beyond verbal harassment.
Hill, a member of the city's transit commission, said OC Transpo have indicated they are going to ensure safety mechanism and any "passive measures" are in place.
"This becomes an enforcement issue if there are issues that cross the line," said Hill. "We need to make sure that there's specific and public deterrence, so that people understand that it's unacceptable to have behaviour like that."