This article presents a study on freeway networks instrumented with coordinated ramp metering and the ability of such control systems to produce arbitrarily complex congestion patterns within the dynamical limits of the traffic system. The developed method is used to evaluate the potential for an adversary with access to control infrastructure to enact high-level attacks on the underlying freew...

Simplified theory of kinematic waves was proposed by Newell and uses cumulative arrival and departure counts to describe kinematic waves of freeway traffic. The original paper deals only with traffic on freeway mainline. It is of great interest, at least practically, to investigate whether the simplified theory can be used to simulate freeway traffic merging and diverging behavior. In his paper...

ENGLISH) This study presents a surrogate approach for safety analysis of freeway facilities using semiautomated trajectory collection and behavioural analysis from surrogate measures of safety (in particular time to collision). This methodology is proposed as a potential alternative to the classical approach based on historical accident data, particularly suited for evaluating the microscopic s...

In this paper the calibration of a traffic microsimulation model based on speed-density relationships is presented. Hypothesis test was applied in the calibration process to measure the closeness between empirical data and simulation outputs and determine whether the difference between (observed and simulated) speeddensity relationships was statistically significant. Statistical regressions bet...

Because remote sensing data can offer information on the geographical landscape of the earth’s surface, these data can be widely used in researching types of land and monitoring vegetation. In this paper, we discuss how to extract land types and vegetation from remote sensing data using the method of Non-Supervised Classification. These data provide the means to study types of soil and vegetati...

Spatial constraints in urban areas very often lead to the application of traffic management measures meet transport demands. Accordingly, it is important identify all potential impacts that could reductions street network’s capacity. One such impact weather conditions. The main motivation this research analyze rainfall on one most segments Belgrade’s network represents part a freeway passing ci...

although there are remarkable differences in drivers’ behavior as well as vehicles characteristics, road capacity estimationmethods in developing countries are same as developed ones. so, the discrepancy between the theoretical andpractical values of capacity is inevitable. although, capacity estimation methods can be classified based on numerousparameters, in developing countries, the availabi...

Numerous continuum models have been proposed for freeway traffic, but their performance real-world traffic flows has not rigorously evaluated and compared in the literature. This paper conducts a comprehensive benchmarking study on single-pipe by using data from German A5 autobahn. Model families are examined, best representative selected within families. A set of criteria is designed, ranging ...

This report describes unique surveillance system on a section of I-80 freeway in the city of Emeryville. The system, called the Berkeley Highway Laboratory (BHL), consists of eight dual loop detector stations along the freeway section, and 12 video cameras. Advanced machine vision algorithms were developed to process the video data to generate vehicle trajectories. Efforts are underway to fuse ...