This paper addresses urban traffic control using an optimization model for signalized areas. The paper modifies and extends a discrete time model for urban traffic networks proposed in the related literature to take into account some real aspects of traffic. The model is embedded in a real time controller that solves an optimization problem from the knowledge of some measurable inputs. Hence, t...

The urban traffic jams are daily problem in large cities. Urban Traffic Control (UTC) Systems aim to solve this problem. Because of spatial distribution of urban traffic, multiagent systems are suitable framework for implementation of UTC. In this paper, we present a new abstract model of traffic flow that and explain how a reactive control agent can be built based on it.

This paper examines a new evaluation of urban road traffic safety based on a matter element analysis, avoiding the difficulties found in other traffic safety evaluations. The issue of urban road traffic safety has been investigated through the matter element analysis theory. The chief aim of the present work is to investigate the features of urban road traffic safety. Emphasis was placed on the...

We consider a stochastic approach in order to define an equilibrium model for a traffic-network problem. In particular, we assume a Markovian behaviour of the users in their movements throughout the zones of the traffic area. This assumption turns out to be effective at least in the context of urban traffic, where, in general, the users tend to travel by choosing the path they find more conveni...

In recent years, many emerging problems with urban transportation system, including traffic congestion, have been direct results of the steadily increasing number of commuters in urban areas. To address these problems, many research projects have studied the behaviors of urban traffic systems, and researchers have proposed new and innovative traffic control schemes. These studies require accura...

Nowadays, many cities or urban areas, say San Francisco Bay Area, started to converge into a divided “working area” “living area” layout, where people commute daily to working area on mornings and commute back on nights. The commute usually depend on few vital highways. For example, the ”working area” could be San Francisco inner city, and living area could be east bay or south bay, and the vit...

Noise mapping of urban areas according to standardized engineering calculation methods systematically results in an underestimation of noise levels at areas shielded from direct exposure to noise, such as inner yards. In these methods, road traffic lanes are represented by point sources and noise levels are computed utilizing point-to-point propagation paths. For a better prediction of noise le...