MTA's Bus Time app originated as a pilot program to install bus countdown clocks along the M16 and M34 routes in August 2009. At the same time, many new buses were retrofitted with GPS-enabled automatic vehicle location systems. In October 2010, the developers of the buses' GPS devices implemented the MTA system's first bus-tracking app, which monitored buses along the M16 and M34 routes. This evolved into the current web app, which originally tracked buses along the route in Brooklyn when it started in February 2011. By January 2012, every local and express bus in Staten Island was equipped with the system. The M34 corridor began using the system on April 6, 2012 with nearly every Bronx bus route using the system by the end of 2012. All five boroughs of the city used the system by March 2014, and a mobile app was released in 2015.