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...

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...

According to the poor adaptive ability of traditional filter algorithm in the estimation for traffic state and travel time with Kalman filter, an improved fuzzy adaptive Kalman filtering method was proposed. The new interest of observation noise was defined, and the fuzzy logic was used to adjust the importance weights of system noise and observation noise through on-line monitoring the interes...

This paper proposes an unsupervised vehicle’s tracking and recognition methods for urban Traffic surveillance in a distributed cooperative manner. Vehicle’s matching in a multi-camera surveillance system is a fundamental issue for increasing the accuracy of recognition. In intelligent transportation systems (ITS), especially in field of urban traffic management, intersections monitoring is one ...

Problem statement: The reduction in ambient air pollution is a universal goal-particularly in urban areas, the lack of resources often necessitates identification and prioritization of sources of air pollutants. Efficient planning and effective management of environmental pollutants is thus important for optimum utilization of limited resources. Approach: This study examined seven years of data...

Urban traffic state evolution analysis is very significant and constructive for traffic guidance and control. In this paper, a quantitative method for analyzing regional traffic state evolution was proposed by constructing traffic state pattern transition network to mine regional traffic state information and state pattern transition characteristics from massive data. Based on the method, a GIS...