Greater Los Angeles has a complex multimodal transportation infrastructure, which serves as a regional, national and international hub for passenger and freight traffic. The transportation system of Greater Los Angeles includes the United States' largest port complex, seven commuter rail lines, Amtrak service, a subway system within the city of Los Angeles, and numerous highways. Los Angeles is integrated into the Interstate Highway System by Interstate 5, Interstate 10, and Interstate 15, along with numerous auxiliary highways and state routes. Bus service is also included locally within the area by numerous local government agencies. Subways and light commuter rail lines are present within Los Angeles proper, allowing mass transportation within the city. Commuter railroads are run by Metrolink. Amtrak has numerous railroad lines that connect Los Angeles to the rest of the country. People in Los Angeles rely on cars as the dominant mode of transportation, but starting in 1990 Los Angeles Metro Rail has built over of light and heavy rail serving more and more parts of Los Angeles. Rail Local Rail Services Metrolink As Greater Los Angeles' main commuter rail service, Metrolink runs seven lines through Southern California. 91/Perris Valley Line (83.8 mile route between Union Station and Perris–South) Antelope Valley Line (76.6 mile route between Union Station and Lancaster) Inland Empire–Orange County (IEOC) Line (100.1 mile route between San Bernardino and Oceanside) Orange County Line (87.2 mile route between Union Station and Oceanside) Riverside Line (59.1 mile route between Union Station and Riverside–Downtown) San Bernardino Line (61.5 mile route between Union Station and San Bernardino/Riverside–Downtown) Ventura County Line (70.9 mile route between Union Station and Montalvo, Ventura) Los Angeles County Metro Rail The Los Angeles County Metro Rail is a light rail and subway system that serves primarily Los Angeles and its surrounding cities. There are several routes associated to this system, which follows: The Metro A Line (opened in 1990 as the Blue Line) is a light rail line running between 7th Street/Metro Center station in Downtown Los Angeles and Downtown Long Beach station in Downtown Long Beach. It is the first of the MTA's modern rail lines since the 1961 demise of the Pacific Electric Railway's Red Car system. The Metro B Line is a subway line running between Union Station in Downtown Los Angeles and North Hollywood station in North Hollywood. The first leg opened as the Red Line to Westlake/MacArthur Park in 1993,