 , there are 28 light rail systems, 14 modern streetcar systems, and approximately 10 heritage streetcar systems (plus the San Francisco cable car system, and Morgantown's light rail-like Personal Rapid Transit system) offering regular year-round transit service, for a total of over 52 operational light rail-type systems in the United States.The United States has a much larger number of "true" light rail systems (i.e.not including streetcar and heritage streetcar systems), by far, compared to any other country in the world (the next largest are Germany with 10 light rail systems, and Japan with 7).