The Keikyu Line is a major railway line in Japan, connecting Tokyo to Kawasaki and Yokohama. Operated by Keikyu Corporation, it serves both local and express trains, making it a vital transportation option for commuters and travelers in the Kanagawa Prefecture. The line spans approximately 40 kilometers and features several branches, including routes to Haneda Airport. It is known for its efficiency and convenience, providing access to popular destinations and connecting with other major rail lines, such as the JR East network.