Emaar Properties extends Serco’s tram O&M contract October 28, 2016 | Middle East & Africa News Dubai-based Emaar Properties, the developer of the tramway system in Downtown Dubai, has extended term of the UK-based Serco’s operations and maintenance (O&M) contract until 2019. Serco had secured t... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password