The Honolulu Authority for Rapid Transit (HART) is constructing the High-Capacity Transit Corridor Project, a 20-mile rail line that would serve the south shore of Oahu from a western terminus in Kapolei, past Pearl Harbor and Honolulu International Airport, through Downtown Honolulu, to an eastern terminus at Ala Moana Center. The electrified (third rail) line would be almost entirely on elevated structure in existing public rights-of-way, primarily arterial streets. Rail service would extend 20 hours each day with automated trains running every 2.4 minutes in weekday peak periods and every 4.7 minutes during most off-peak hours. The project scope includes 21 stations, 80 light metro rail vehicles, four park and ride facilities with 4,100 spaces, and a maintenance and storage facility. The project is expected to serve 116,000 average weekday trips in 2030.