Samenvatting
The Societe des Autoroutes Paris Rhin Rhone (S.A.P.R.R.) has been operating a motorway network which has been expanding both in terms of length and volume of traffic for more than 30 years. The network operated by SAPRR was originally a single stretch of the A6 motorway. In 1987, SAPRR introduced the first version of a modern traffic management system: REGA. Nowadays the network, with a total length of 1540 kms, no longer forms a star but a mesh of inter-linked motorways which offer several possible routes for the same destination. This required SAPRR to carry out studies on a new architecture for the system: REGA 2. The article describes this architecture.