SANRAL ITS Rehabilitation
SANRAL Head Office
The South African National Roads Agency Limited (SANRAL) implemented an Intelligent Transportation System (ITS) project where ITS technologies are used to manage traffic and to provide road users with traffic conditions on a real-time basis. The ITS backbone connects the Network Management Centre (NMC) to 27 Outstations where the video-streams and data-streams from approximately 240 field devices (the majority of which are cameras, but also include Variable Message Signs [VMS]) are collected for transfer to the NMC.
This project has been operational for several years, and the duct infrastructure for the fibre optic cables has significantly deteriorated over the years due to ongoing construction and repair of other services.
This situation was further aggravated by the significant reconstruction and expansion work SANRAL commissioned on the Gauteng Freeway Improvement Project (GFIP), where several highways were significantly widened and almost all the major interchanges were optimised and rebuilt. Owing to the damage on the duct infrastructure, a significant portion of the backbone had to be rehabilitated, and in certain cases, completely replaced.