The Midland Metro is a light-rail or tram line in the West Midlands of England between the cities of Birmingham and Wolverhampton via West Bromwich and Wednesbury. It is owned and promoted by Centro, and operated by a subsidiary of the National Express Group (NEG) under the brand name Travel Midland Metro (TMM). Midland Metro carries about five million passengers annually, about one third of that predicted by Centro in the planning stage.