Publications related to Variable-message sign

Study of flexible operating conditions in variable-speed hydraulic turbines : advanced models and experimental validation

The global imperative to transition from fossil fuel-based energy sources to renewable alternatives has become increasingly urgent in the pursuit of sustainable and renewable power generation. This paradigm shift necessitates innovative approaches to manag ...

EPFL2024

Dynamic lane restrictions on congested arterials

Nikolaos Geroliminis, Paul Richard Anderson

Buses operating in mixed traffic experience problems with delay and travel time variability in peak periods. Numerous transit priority measures are found in the literature but most rely on separating buses from other vehicles. Complete separation such as d ...

PERGAMON-ELSEVIER SCIENCE LTD2020

Comparison of Feedback Linearization and Model Predictive Techniques for Variable Speed Limit Control

Nikolaos Geroliminis, Isik Ilber Sirmatel, Yihang Zhang

Different types of variable speed limit (VSL) controllers have been proposed to improve the traffic mobility at highway bottlenecks. However, the benefit of VSL is sometimes deteriorated by the capacity drop phenomenon introduced by the disordered lane cha ...

IEEE2018

Prediction of Francis Turbine Prototype Part Load Pressure and Output Power Fluctuations with Hydroelectric Model

François Avellan, Christophe Nicolet, Christian Landry, Sébastien Alligné, Joao Gomes Pereira Junior, Antoine Béguin

The prediction of pressure and output power fluctuations amplitudes on Francis turbine prototype is a challenge for hydro-equipment industry since it is subjected to guarantees to ensure smooth and reliable operation of the hydro units. The European FP7 re ...

2017

Stochastic Security Constrained Unit Commitment with Variable-Speed Pumped-Storage Hydropower Plants

Mostafa Nick, Omid Alizadeh Mousavi

The Pumped Hydro Storages (PHSs) equipped with variables speed drives have several advantages, namely: i) power regulation in pumping mode, ii) extended operating range, iii) higher efficiency in turbine mode. Such flexible operation of the PHS units ensur ...

Ieee2016

Effectiveness of variable speed limits considering commuters' long-term response

Wei Liu

This paper examines the effectiveness of variable speed limits (VSLs) on improving traffic flow efficiency and reducing vehicular emissions in a stylized setting of morning commute where a fixed number of individuals commute from home to work through the f ...

Pergamon-Elsevier Science Ltd2015

Position accuracy with redundant MEMS IMU for road applications

Jan Skaloud, Pierre-Yves Gilliéron, Bertrand Merminod, Philipp Clausen

Traffic problems have mainly resulted from an increase in mobility over the last decades involving an increase in traffic congestion and degradation of environmental conditions. The employment of new systems - namely, Intelligent Transport Systems (ITS) is ...

2015

Accessibility Futures

Paul Richard Anderson

This study uses accessibility as a performance measure to evaluate a matrix of future land use and network scenarios for planning purposes. The concept of accessibility dates to the 1950s, but this type of application to transportation planning is new. Pre ...

Wiley-Blackwell2013

Modeling and Simulating ITS Applications with iTETRIS

Jérôme Härri

This work presents the modeling methodology of the iTETRIS platform to integrate and simulate ITS applications. iTETRIS is a modular and open-source simulation platform composed of four key modules: the network simulator ns-3, the traffic simulator SUMO, a ...

2011

Random Forest Models for Identifying Motorway Rear-End Crash Risks Using Disaggregate Traffic Data and Meteorological Information

André-Gilles Dumont, Ashish Bhaskar, Edward Chung, Minh Hai Pham

This paper presents an approach to develop motorway Rear-End Crash Risk Identification Models (RECRIM) using disaggregate traffic data, meteorological data and crash database for a study site at a two-lane-per-direction section on Swiss right-hand driving ...

2010

AGIR - A decision support tool for Geneva ring-road traffic management during important events

Emmanuel Bert

Geneva is a city used to organise international events like for example the International Motor Show which takes place every year. Most of these events are hold on the Palexpo area, a group of buildings situated near the Geneva airport. Both places are clo ...

2006

Self supplied navigation systems: microsimulation-based performance assessment

André-Gilles Dumont

The self-supplied navigation concept is based on the combination of the floating car data technique and the dynamic route guidance service in the same vehicles. The gains obtained by the users of such system are, obviously, closely related to the percentag ...

2005

Elaboration d'un système de navigation auto-alimenté (SNA) et évaluation de ses performances

Alexandre Torday

This research deals with self-supplied navigation systems (SNS), a combination of the technology of gathering travel time using floating car data (FCD) and dynamic route guidance (DRG). Using similar on-board equipment, these two systems can easily be comb ...

EPFL2005