MTA Bus Time uses GPS and wireless communications technology to track the real-time location of buses. MTA Bus Time can be used to find the location of the next several buses that will arrive at a stop. The project currently covers all bus routes in Staten Island and will be expanded to other NYC boroughs with expected completion in 2013. The API provides calls that let users track any or all vehicles in the system in real time and also monitor real time information about a particular stop. The API uses RESTful calls and responses are formatted in XML and JSON.