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Reliable and trustworthy routing operation is a very crucial requirement in Vehicular Communication (VC) that enables a new set of applications to improve active safety, traffic efficiency and driving comfort. To make this application possible, a security mechanism must be taken into account. Major security issue for VC is secure routing. Practical routing schemes in VC are geographic-based, which...
Vehicle safety communication applications require safety messages to be received by all the targeted vehicles within their lifetime. We propose a piggybacked cooperative repetition approach for reliably broadcasting safety messages in VANETs. Repetitions by neighbors that receive the original transmission can effectively cover the areas that are missed in the original transmissions. Moreover, the...
This paper proposes an optimization based approach to multi-UGV surveillance. In particular, we formulate both the minimum time- and connectivity constrained surveillance problems, show NP-hardness of them and propose decomposition techniques that allow us to solve them efficiently in an algorithmic manner. The minimum time formulation is the following. Given a set of surveillance UGVs and a polyhedral...
Vehicle License Plate of GA36-2007 has overcome most defects of GA36-1992, but there are still some disadvantages on visibility, uniqueness and intelligence. At present the automatic vehicle identification system is limited on image identification technology, which still has many shortages. In this paper, we propose a new type design of vehicle license plate and develop a matched secure automatic...
This paper proposes novel certificate assignment strategies for use in vehicular networks in order to significantly reduce the complexity of managing the public key infrastructure (PKI) framework. The strategy involves segmenting a country into a number of geographic regions, and the assignment of region-specific certificates to an OBU resident on a vehicle. A vehicle is also assigned multiple certificates...
In this paper we introduce a novel security architecture and security mechanisms for vehicular networks environments. Our approach provides a layer-2 multi-hop authentication and credential delivery scheme between vehicles and the network operator authentication server. We analyze the performance of the proposed solution through extensive simulations, showing the success of our scheme (compared to...
The driver controlling model of car-following based on preview follower theory is advanced by analyzing the relation of direction controlling and velocity controlling on the following car and regarding the whole car-following course as preview-follow to the velocity of the leading car for n times. The model could describe the car-following behaviors more truly due to the safety decision index is the...
According to the characteristics of driving knowledge, different knowledge expression methods was adopted to express the driving system knowledge respectively, and the driving knowledge expression model has been established. The overall structure and lever of driving knowledge was based on framework representation and the logic judgment process of operation was expressed based on producing representation...
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