An important task for progress in IVHS (Intelligent Vehicle Highway Systems) is the development of methods for real-time traffic scene analysis. All three major applications of IVHS ADIS (Advanced Driver Information Systems), ATMS (Advanced Traffic Management Systems), and AVCS (Automated Vehicle Control Systems) could benefit from accurate, high-level descriptions of traffic situations. For ex...

We present longitudinal control laws for vehicles moving in an Intelligent Vehicle Highway System (IVHS) [1] [2]. In particular the scenario where cars move along the highway in tightly spaced platoons is considered. We present control schemes that perform the major longitudinal tasks that will be required from the lead vehicle of a platoon moving on an automated highway. More speci cally schem...

A comparison is drawn between the casualty rates per failure on an automated highway system (AHS) according to the longitudinal control configuration used. It is suggested that the most important failure of this system is one in which brakes fail full on. The inverse failure brakes will not apply—must be avoided by system designers. Incident for incident, it is clearly the more dangerous of the...

In a world that is increasingly reliant on automobiles, efficient management of the transportation network is a key functionality of intelligent transportation systems (ITS). A wide range of these ITS applications rely on the extraction of current data as well as historical information in order to perform appropriately. This work presents a novel computer vision based approach for traffic manag...

Absb.ack A multiple access and collision resolution scheme that accounts for the spatial aspects of cochannel interference is introduced and analyzed for roadside base station to vehicle packet communications in Intelligent Vehicle Highway Systems (IVHS). In a wireless network with base stations having full knowledge of neighboring station activity, co-channel interference and destructive colli...

Abstruct: Optimum frequency reuse patterns for roadside base station to vehicle communications in Intelligent VehicldHighway Systems (IVHS) are determined based on optimal delayhhroughput and packet erasure rates for BPSK transmission over narrowband dispersive Rician channel with IS1 and (Rayleigh-faded) co-channel interference. For fixed cluster size and fixed total system bandwidth, a reuse ...

In our country, Student transportations’ security and driving accidents statistics for students is one of the major concerns for relevant organizations such as educational organization. In current year, a system, was named Sepand, was formed in city taxi driver ::::::union:::::: by educational organization, NAJA traffic and city taxi driver ::::::union::::::. In this systems’ plan, ...

Design of a new intelligent driver assistance system based on traffic sign detection with Persian context is concerned in this paper. The primary aim of this system is to increase the precision of drivers in choosing their path with regard to traffic signs. To achieve this goal, a new framework that implements fuzzy logic was used to detect traffic signs in videos captured along a highway f...

ABSTR.ACT A case study of the difficulties associated with the design of hybrid control systems is presented. We use the Intelligent Vehicle Highway System (IVHS) architecture of [l] as our example of a hierarchical hybrid system. We point out that, even though conventional analysis tools suggest that the proposed design should fulfill certain performance requirements, the simulation results sh...

In earlier work, we developed a mathematical hybrid I/O automaton (HIOA) modeling framework, capable of describing both discrete and continuous behavior. This framework has been used to analyze examples of automated transportation systems, intelligent vehicle highway systems, air traffic control systems, and consumer electronics applications. Here, we reconsider the basic definitions of the HIO...