While many agencies internally record incidents (which can often cause bunching and gaps down the line for hours), the TTC (Toronto Transit Commission) makes then publicly available here: https://www.toronto.ca/city-government/data-research-maps/open-data/open-data-catalogue/#bb967f18-8d90-defc-2946-db3543648bd6
This ticket only tracks putting them on the map (use fake hardcoded data when implementing this)
API endpoint creation tracked here: trynmaps/tryn-api#30