The Third and Amsterdam Avenues Line, also known as the Third Avenue Line, is a public transit line in Manhattan, New York City, running from Lower Manhattan to Fort George in Washington Heights. Originally a streetcar line, it now consists of the M98, M101, M102, and M103 bus routes, operated by the New York City Transit Authority. The M98 bus route operates on Third Avenue between East 65th Street and East 127th Street, although it previously continued to 32nd Street. The M101, M102 and M103 bus routes run southbound on Lexington Avenue north of East 24th Street. Current bus service M98 The M98 operates between Hunter College at East 68th Street on the Upper East Side and Fort Tryon Park in Inwood near West 192nd Street. The M98 operates northbound via Third Avenue, and southbound via Lexington Avenue. At East 120th Street, southbound service shifts from Park to Lexington Avenues, while at East 127th Street, the M98 northbound service shifts onto the Harlem River Drive. The M98 exits the Harlem River Drive via the Interstate 95/Amsterdam Avenue exit. The M98 travels westbound along West 179th Street and eastbound along West 178th Street between Amsterdam Avenue and Fort Washington Avenue, where the M98 turns north on Fort Washington Avenue until its terminal at the entrance to Fort Tryon Park. M101 The M101 spans between Cooper Square in the East Village and West 193rd Street and Amsterdam Avenue in Fort George. The M101 runs northbound along Third Avenue from Astor Place to East 125th Street, while southbound buses use Lexington Avenue north of East 24th Street. The M101 continues crosstown on 125th Street to Amsterdam Avenue, running north towards West 193rd Street after Amsterdam Avenue becomes Fort George Avenue. To begin the southbound trip, the M101 turns south onto Saint Nicholas Avenue, then left (east) onto West 190th Street, followed by a right (south) back onto Amsterdam Avenue. The M101 runs as a limited-stop service during the day south of East 116th Street, with no other local service. Local service is provided by the M102 and M103 buses, during that time. Overnight and weekend morning service runs local. M102 The M102 begins at Cooper Square and follows the M101 until East 116th Street in East Harlem. The route travels west across 116th Street to Lenox Avenue, where it continues north to the Harlem–148th Street subway station. M103 The M103 begins its route