3 Scarborough and at the Toronto–York Spadina Subway Extension ( to ) stations. The new media system replaced the old "Subway Online" system, which were decommissioned. The signs feature advertising, news headlines and weather information. From its inception in 2005 until December 31, 2017, the news feed and advertising for television programs were supplied under a contract with Bell Media's 24-hour local cable television news service, CP24. Since January 1, 2018, the service has been provided by Global Television Network's Toronto television station CIII-DT 41, which is owned by Corus Entertainment. The signs also provide TTC-specific information regarding service changes and delays, information pertaining to using the system, and Toronto Police Service alerts about suspects. The system can also be used when an Amber alert is issued, which also may include announcements via the PA system. In September 2008, Dundas station was the first to feature a "Next Train" announcement integrated into the signage. The system has been expanded to many other stations since its initial rollout. Since mid-July 2009, the majority of stations have been equipped with this service and since January 2018 – coinciding with a content provider switch from CP24 to Global News – the next train arrival time notices were also updated to provide the line number and the destination of the next train. The TYSSE stations have screens that display the arrival times for the next two or three trains. Unlike the older screens, these screens neither display news nor weather headlines provided by Global News. Governance As an agency of the City of Toronto, the City has full authority over the TTC's mandate and structure. The TTC is responsible to Toronto City Council through its board, composed of members of council and citizens, led by the chair. Constituting legislation The Municipality of Metropolitan Toronto Act established the modern day "Toronto Transit Commission" from the "Toronto Transportation Commission" in 1954. When the City of Toronto Act was last updated in 2006, the TTC was continued under the updated act. Toronto Municipal Code, chapter 279 stipulates additional fiscal and policy requirements for the TTC, as well as sets out the requirements for the TTC board. The TTC itself regulates the use of its system via TTC By-law No. 1, the most current revision being the 2009 revision. Board and chair The TTC board consists of ten members: six Toronto City Council members and four citizens. The