METRORail is the 7.5-mile (12.1 km) light rail line in Houston, Texas (USA). With an average weekday ridership of 36,250, METRORail ranks as the fourteenth most-traveled light rail system in the United States, with the second highest ridership per track mile. METRORail is operated by the Metropolitan Transit Authority of Harris County (METRO).
Read more about METRORail: History, Ridership, Route and Infrastructure, Rolling Stock, Fares and Operations, Controversies, Future Expansion