Abstract—With a number of projects developing vehicular communication systems, there is rising awareness on threats and the need to introduce security and privacy-enhancing mechanisms. With recent results, in principle in agreement across different major projects, there has been little work on implementation and demonstration of security and privacyenhancing mechanisms. The contribution of this work is exactly in this direction: we present a demonstration of our system, comprising a range of mechanisms, developed to secure vehicular communications (VC) and enhance the location privacy of the users of VC systems.

Abstract — Vehicular communication (VC) systems have recently drawn the attention of industry, authorities, and academia. A consensus on the need to secure VC systems and protect the privacy of their users led to concerted efforts to design security architectures. Interestingly, the results different project contributed thus far bear extensive similarities in terms of objectives and mechanisms. As a result, this appears to be an auspicious time for setting the corner-stone of trustworthy VC systems. Nonetheless, there is a considerable distance to cover till their deployment. This paper ponders on the road ahead. First, it presents a distillation of the state of the art, covering the perceived threat model, security requirements, and basic secure VC system components. Then, it dissects predominant assumptions and design choices and considers alternatives. Under the prism of what is necessary to render secure VC systems practical, and given possible non-technical influences, the paper attempts to chart the landscape towards the deployment of secure VC systems. I.

Switzerland. The event brought together experts, from a variety of organizations, working on vehicular communication systems, security and privacy. The fourteen presentations offered an overview of the latest results and reflected the views of public authorities, academia, and industry. During the one and a half days of the workshop, the thirty-five attendees had the opportunity to have an in-depth discussion on future research and development directions for vehicular communication systems security and privacy. The developments in the area of vehicular networks and communication systems, and the increasing attention from industry, academia and authorities, motivated us to organize this workshop. Vehicular communications (VC), including vehicle-to-infrastructure