The IRT Flushing Line is a rapid transit route of the New York City Subway system, operated as part of the A Division. Originally an Interborough Rapid Transit Company-operated route, the Flushing Line, as originally built, ran from Flushing, Queens, to Times Square, Manhattan; a western extension was built to Hudson Yards in western Manhattan, and the line now stretches from Flushing to Chelsea, Manhattan. It carries trains of the local service, as well as the express during rush hours in the peak direction.