Vehicular ad hoc networks (VANETs) are appropriate networks that can be used in intelligent transportation systems. Among challenges in VANET, scalability is a critical issue for a network designer. Clustering is one solution for the scalability problem and is vital for efficient resource consumption and load balancing in large scale networks. As our first algorithm, we propose a novel clusteri...

The complexity and congestion of current transportation systems often produce traffic situations that jeopardize the safety of the people involved. These situations vary from maintaining a safe distance behind a leading vehicle to safely allowing a pedestrian to cross a busy street. Environmental sensing plays a critical role in virtually all of these situations. Of the sensors available, visio...

Increased urban sprawl and increased vehicular traffic have resulted in an increased number of traffic fatalities, the majority of which occur near intersections. According to the National Highway Safety Administration, one out of eight fatalities occurring at intersections is a pedestrian. An intelligent, real-time system capable of predicting situations leading to accidents or near misses wil...

INTRODUCTION "DETERIORATION OF a vehicle with time is inescapable, whether from normal wear, abuse, defective construction, improper maintenance, poor quality of original or repair parts, inadequate skill of mechanics or other factors. With the deterioration of such components as brakes, steering systems, and tires, the chances of the vehicle becoming involved in a crash increase." This asserti...

In this thesis we formally model a system consisting of two vehicles moving along a single track, plus controllers that operate the vehicles, plus communication channels. The modeling formalism used is the Hybrid Automata model developed by Lynch, Segala, Vaandrager and Weinberg. We formulate a key safety requirement of such a system, namely, that the two vehicles never collide at a relative ve...

The advance of computing technology has provided the means for building intelligent vehicle systems. Drowsy driver detection system is one of the potential applications of intelligent vehicle systems. Here we employ machine learning techniques to detect driver drowsiness. The system obtained 98% performance in predicting driver drowsiness. This is the highest prediction rate reported to date fo...

The Intelligent Vehicle Initiative (IVI) provides vehicle-based tools that could assist drivers in reacting both more rapidly and effectively to a range of external stimuli. Intelligent or adaptive cruise control systems (ICC or ACC), for example, attempt to assist drivers in better maintaining a safe headway under normal driving conditions. In addition, automatic braking systems may provide ad...

86 1094-7167/03/$17.00 © 2003 IEEE IEEE INTELLIGENT SYSTEMS The first large-scale application of computerized signal control systems, Torontonians brag, was in Metropolitan Toronto during the early 1960s. More recently, changeable-messagesign driver information systems (such as COMPASS, www. mto.gov.on.ca/english/traveller/compass) for freeway control have been introduced in the Greater Toronto...