Real-time traffic speeds on South African roads: the technology, applications and possibilities

摘要

For definitions of terms, and an explanation of the acronyms associated with the various technologies, please refer to the list at the end of the article.The ability to measure / monitor the speed of traffic in real time1 gives a unique insight into the performance of a road network. This in turn facilitates more effective operation and management of the network, and identification of areas where improvements are required. And, as traffic speed and journey-time are experienced directly by road users, the measurement of these factors provides an objective tool for user-centric performance evaluation of the road network.