Traffic conflicts are heavily correlated with traffic collisions and may provide insightful information on the failure mechanism factors that contribute more towards a collision. Although proactive management systems have been supported in research community, autonomous vehicles (AVs) soon to become reality, analyses concentrated very specific environments using aggregated data. This study aims...

The nature and the effects of improving road traffic safety by infrastructure redesign and Advanced Driver Assistance Systems (ADAS) are different. This makes comparison of such measures difficult, especially because relevant effect data for ADAS are not yet available. To address this issue, a conceptual model is presented for the effects of road traffic safety measures, based on a breakdown in...

Alternative implementations of a Rear Cross Traffic Alert (RCTA) system intended to actively notify drivers of the presence of rear cross-path traffic when backing were evaluated in naturalistic settings. The feature is one of several emerging technologies designed to assist drivers when backing in this case, enhancing drivers' awareness of traffic approaching from the rear. The study allowed p...

The routing of traffic flows is an important mechanism to alleviate traffic congestion. However, it faces a dilemma. For the traffic manager, it is desirable to achieve system optimum, which may discriminate against some users, and yet the user wishes to use the shortest route to maximize his/her utility, which may result in inferior system performance. Based on the conflict between the "system...

In order to explore the potential for a human centred design of conflict resolution advisor, or ‘assistant’, a project has been undertaken to elicit from controllers directly their resolution strategies for a number of scenarios. Since this is a European project, it was necessary to consider a number of different countries. Therefore controllers from seven countries were interviewed individuall...

Technical systems tend to undergo changes and thus will sooner or later require adjustments to new requirements or conditions. Currently, major changes in Air Traffic Management (ATM) are on the way, as ATM modernizations programs like SESAR or NextGen are getting momentum. ATM systems are rather complex and pose high demands on safety. Besides safety, other performance parameters like efficien...

OBJECTIVE This experiment attempted to identify the features of air traffic geometry that would influence the difficulty and biases of pilots' conflict detection using a cockpit display of traffic information (CDTI). BACKGROUND There was previously no systematic study on effects of such features on conflict detection using the CDTI. METHOD Twenty-four pilots viewed dynamic encounters betwee...

2003 i Preface In recent years, the Internet traffic has increased explosively, because multimedia traffic such as video streaming service and business data distribution becomes to be transported in the Internet. Some multimedia applications requires strict QoS or multicasting. A multicast ATM switch can be accepted as a solution to support multimedia traffic. ATM can provide strict QoS guarant...

The hierarchical connection of Rail Traffic Management System (TMS) and Automatic Train Operation (ATO) for mainline railways has been proposed a while; however, few have investigated this with the real field. This paper studies in detail benefits limitations an integrated framework TMS ATO stochastic dynamic conditions terms punctuality, energy efficiency, conflict-resolving. A simulation is b...

The conflict resolution task performed by air-traffic controllers appears a suitable task for automation using CBR. This is because human competence seems to involve recognising situations and reusing solutions. In this paper we present our experiences in developing a CBR system to support this conflict resolution task. We discuss the problems of case representation: the macro problem of what s...