This paper provides the status of the Vehicle Safety Communications-Applications (VSC-A) research project, which was designed to determine if dedicated short range communications (DSRC) paired with accurate vehicle positioning can improve upon autonomous vehicle-based safety systems or enable new communication-based safety applications. This three-year project is a collaborative effort between ...

One of the key ideas to make Intelligent Transportation Systems (ITS) work effectively is to deploy advanced communication and cooperative control technologies among the vehicles and road infrastructures. In this spirit, we propose a consensus based distributed speed advisory system that optimally determines a recommended common speed for a given highway in order that the group emissions are mi...

Cooperative vehicular systems are currently being investigated to design innovative ITS (Intelligent Transportation Systems) solutions for road traffic management and safety. Through the wireless exchange of information between vehicles, and between vehicles and infrastructure nodes, cooperative systems can support novel decentralized strategies for ubiquitous and more cost-attractive traffic m...

The idea of vehicle-highway communications sufficient to assume driving functions for the driver is not new. Researchers have articulated both its value and feasibility for several decades; and military and vehicle manufacturer test facility developments have proven the concept’s viability. As mounting congestion conflicts with environmental constraints, the Automated Highway System (AHS) promi...

This work treats a problem arising in intelligent vehicles and highway systems (IVHS), specifically in automatic road following,collisionavoidance, and maneuver control. A millimeter-wave radar is placed on the front of the vehicle and an image of the radar backscatter of the terrain is acquired in polar coordinates. This image contains both road and offroad scatter components which must be seg...

A recently proposed strategy for evaluating the string stability properties of longitudinal vehicle controllers used in Automated Highway Systems (AHS) is to consider the platoon as a mass-spring-damper system. This simpliied analysis framework results in linear closed-loop systems, yielding transfer functions which characterize the spacing error response of the platoon. These transfer function...

We investigate the use of large-scale Automated Highway Systems, also called one-dimensional vehicle platoons, as a practical traffic mitigation solution. We review recent theoretical results related to vehicle platooning and discuss their implications on the scalability and safety of large-scale platoons. We also quantify the performance of different platoon control strategies through simulati...

The problem of designing a decentralized advance hazard warning system for highway transportation systems entails the development of efficient switching controllers. In this paper, we represent the vehicle dynamics by a finite number of modes, each of which is represented by a low order transfer function and a constant time delay. The problem of highway safety analysis then gets translated into...

Analyzing historical vehicle traffic data has many applications including urban planning and intelligent in-vehicle route prediction. A common practice to acquire this data is through roadside sensors. This approach is expensive because of infrastructure and planning costs and cannot be easily applied to new routes. In this paper, a low-cost Web mining approach is proposed to address these limi...