Transportation Safety Board
The Transportation Safety Board of Canada (TSB) is an independent agency created to advance transportation safety through the investigation of occurrences in the marine, pipeline, rail and air modes of transportation.
These investigations help the TSB to determine why an accident happened, and how safety can be improved to help prevent similar accidents.
The TSB also maintains an accident reporting system for all modes of transportation. This information is used by the Board, and by Transport Canada, to analyze and improve the safety of Canada's transportation system.
Coroner
If a transportation accident involves fatalities, a representative of the provincial or territorial coroner or a medical examiner is sent to the site. The coroner's responsibilities include conducting autopsies where necessary and determining the cause of death. The coroner may decide to hold a coroner's inquest into the circumstances surrounding the deaths. This inquest is normally held two to six months after the accident.
Police
The police, whether local, provincial or RCMP, are normally among the first officials to arrive at the site. Their initial responsibilities are to ensure the safety of persons and property at the site. They also secure the site, document evidence, assist the coroner in his/her duties, and may act as the coroner's agent, especially in remote locations.
Others
On occasion, there may be other organizations present at accident sites. For example, officials from Environment Canada and their provincial counterparts may be on hand to help determine the presence of or to contain any environmental damage.