English: London General MEC31 (BD09 ZVW), a Mercedes-Benz Citaro, in Cab Road, Waterloo, outside London Waterloo railway station, on route 507. This Monday was the first weekday of rigid Citaro operation of the route, the service finished being operated by articulated buses on 24 July 2009, and rigid Citaros took over from the next day (a Saturday), coinciding with the introduction of a weekend service for this previously Monday - Friday only commuter route.