DART to invite bids for BRT system operations; extend network May 26, 2017 | Middle East & Africa News The Dar Rapid Transit Agency (DART) has announced plans to invite a second operator for the Dar es Salaam bus rapid transit (BRT) system. Usafiri Dar es Salaam Rapid Transit Company (UDART) ope... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password