J. Agustin Sanchez Rey
Doctor Ingeniero de Caminos, Canales y Puertos
Highways
Ministerio de Fomento

ABSTRACT
As an example of ITS systems that are implemented on Spanish roads the VIA-T interoperable electronic toll system is described. It is a system whose features make it unique in the world: absolute interoperability, despite the existence in Spain of numerous toll motorways managed by different companies, choice of equipment suppliers that ensures competition, conformity to standards international technical, financial institutions collaboration devices like electronic toll stations, possibility of cross-border use, etc. The system fully operational since 2004, has been the result of TRACK project, whose development is dedicated article.

KEYWORDS
Intelligent Transportation System, Electronic Toll Turnpike, dynamic tolling, interoperability.