<page_title> List of United States light rail systems by ridership </page_title> <section_title> List </section_title> <table> <cell> 12 <col_header>  </col_header> </cell> <cell> METRORail <col_header> System </col_header> </cell> </table>
METRORail ranks as the 12th most-traveled light rail system in the United States.