Concept

Traffic congestion

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Fatigue safety examination of a 150-year old riveted railway bridge

Eugen Brühwiler

Built in 1859, the railway bridge over the Rhine between Koblenz (Switzerland) and Waldshut (Germany) consists of a three span continuous riveted steel truss girder and an approach viaduct in natural stone masonry. Due to ever increasing traffic demands th ...

CRC Press/Balkema2012

Experienced Travel Time Prediction for Freeway Systems

Nikolaos Geroliminis, Mehmet Yildirimoglu

Travel time is considered as one of the most important performance measures for roadway systems, and dissemination of travel time information can help travelers to make reliable travel decisions such as route choice or time departure. Since the traffic dat ...

Ieee2012

Structural Analysis of Network Traffic Matrix via Relaxed Principal Component Pursuit

Xiaowen Dong, Zhe Wang, Ke Xu

The network traffic matrix is widely used in network operation and management. It is of crucial importance to analyze the composition and the structure of the network traffic matrix, for which some mathematical approaches such as Principal Component Analys ...

2012

Simulation-based Validity Analysis of Ecological User Equilibrium

Traffic is believed to organize itself by minimizing user’s travel cost (travel time is used as cost very often). Almost all the analytical and numerical work in the last 50 years has concentrated on travel cost and the assumption that costs are always an ...

2012

Rain rate estimation combining rain gauge, radar and microwave link data

Alexis Berne, Blandine Bianchi

Accurate and reliable rain rate estimates are crucial for various applications (flood forecasting, road traffic, agriculture to list a few). As a consequence rain sensors of different types have deployed in many regions. In this work a data assimilation te ...

2012

Privacy Decision Making in the Travel Panopticon

Intelligent Transport Systems (ITS) have the potential to increase road-network capacities, reduce congestion and pollution, create shorter and more predictable journey times and significantly improve road-user safety. However, these technologies will also ...

2012

A monitoring system for determination of real deck slab behaviour in prestressed box girder bridges

Eugen Brühwiler, Mark Anthony Treacy

Due to ever increasing traffic demands the fatigue safety and service life of the bridges of a railway line in Brazil need to be examined. Conventional assessment methods using load models and approaches as suggested in codes lead to conservative results r ...

CRC Press/Balkema2012

Estimation of the network capacity for multimodal urban systems

Nikolaos Geroliminis, Burak Boyaci

As more people through different modes compete for the limited urban space that is set aside to serve transport, there is an increasing need to understand details of how this space is used and how it can be managed to improve accessibility for everyone. Ul ...

Elsevier Science2011

Considering weather in simulating traffic

André-Gilles Dumont, Ashish Bhaskar, Minh Hai Pham, Sofia Samoili

The impact of weather on traffic and its behavior is not well studied in literature primarily due to lack of integrated traffic and weather data. Weather can significant effect the traffic and traffic management measures developed for fine weather might no ...

2011

Traffic Effects of the Emergency Lane Use

Sofia Samoili

The use of the hard shoulder/emergency lane (EL) is analysed in the current research, with case study the first experimental application of emergency lane use undertaken in Switzerland (Morges - Écublens). The EL is activated during peak hours and when con ...

2011