Publications by Edward Chung | EPFL Graph Search

Information Provision and Network Performance Represented by Macroscopic Fundamental Diagram

Ashish Bhaskar, Edward Chung, Nikolaos Geroliminis

2013

Methodology for Developing Real-time Motorway Traffic Risk Identification Models Using Individual Vehicle Data

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

Most of existing motorway traffic safety studies using disaggregate traffic flow data aim at developing models for identifying real-time traffic risks by comparing pre-crash and non-crash conditions. One of serious shortcomings in those studies is that non ...

2011

Fusing Loop Detector and Probe Vehicle Data to Estimate Travel Time Statistics on Signalized Urban Networks

André-Gilles Dumont, Ashish Bhaskar, Edward Chung

This article presents a methodology that integrates cumulative plots with probe vehicle data for estimation of travel time statistics (average, quartile) on urban networks. The integration reduces relative deviation among the cumulative plots so that the c ...

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

Estimation of travel time on urban networks with midlink sources and sinks

André-Gilles Dumont, Ashish Bhaskar, Edward Chung

This paper presents a methodology for estimation of average travel time on signalized urban networks by integrating cumulative plots and probe data. This integration aims to reduce the relative deviations in the cumulative plots due to midlink sources and ...

National Academy of Sciences2009

Analytical Modelling and Sensitivity Analysis for Travel Time Estimation on Signalised Urban Network

André-Gilles Dumont, Ashish Bhaskar, Edward Chung

This paper presents a model for estimation of average travel time on signalized urban lane using cumulative plots. The plots are generated based on the availability of data: a) case-D, for detector data only; b) case-DS, for detector data and signal timing ...

2008

Mesoscopic simulator data to perform dynamic origin- destination matrices estimation in urban context

André-Gilles Dumont, Emmanuel Bert, Edward Chung

The aim of this paper is to explore a new approach to obtain better traffic demand (Origin-Destination, OD matrices) for dense urban networks using traffic simulation data. From reviewing existing methods, from static to dynamic OD matrix evaluation, possi ...

2008

Urban Dynamic Origin-Destination Matrices Estimation

André-Gilles Dumont, Emmanuel Bert, Edward Chung

The aim of this paper is to explore a new approach to obtain better traffic demand (Origin-Destination, OD matrices) for dense urban networks. From reviewing existing methods, from static to dynamic OD matrix evaluation, possible deficiencies in the approa ...

2008

Sensitivity of road safety indicators in normal and crash cases

Edward Chung, Minh Hai Pham

Road traffic safety is receiving increasing attention. Different real-time safety indicators relying on traffic sensor data can be found in the literature. Some are based on the posterior analysis of crash and traffic data; while others are based on real t ...

2008

Discrete choice modelling of combined mode and departure time

Edward Chung

Typical daily decision-making process of individuals regarding use of transport system involves mainly three types of decisions: mode choice, departure time choice and route choice. This paper focuses on the mode and departure time choice processes and stu ...

2008

Approach for Dynamic Origin-Destination Matrices Estimation in Urban Context

André-Gilles Dumont, Emmanuel Bert, Edward Chung

The aim of this paper is to explore a new approach to obtain better traffic demand (Origin-Destination, OD matrices) in dense urban networks. From reviewing actual methods, for static and dynamic OD matrix evaluation, possible deficiencies in the approach ...

2008

Can safety indicators assess and monitor road traffic risk in real-time? Investigation of two safety indicators on Swiss motorways

Edward Chung, Minh Hai Pham

Road safety has become a major concern and many strategies have been introduced to reduce road risk and mitigate severe consequences of unavoidable crashes. This paper presents an innovative methodology which aims at monitoring in real time and even antici ...

2008

Travel Time Estimation on a Signalised Urban Networks using Cumulative Plots

André-Gilles Dumont, Ashish Bhaskar, Edward Chung

This paper presents the development and testing of a methodology for estimation of average travel time on signalised urban networks. The methodology considers the classical analytical procedure, where average travel time on a study link is estimated as the ...

2007

Methodology for Travel Time Estimation on a Signalised Arterial

André-Gilles Dumont, Ashish Bhaskar, Edward Chung

This paper presents the development and testing of a methodology for estimation of average travel time on signalised urban networks. The methodology considers the classical analytical procedure, where average travel time on a study link is estimated as the ...

2007

Development and implementation of the areawide Dynamic ROad traffic NoisE (DRONE) simulator

Ashish Bhaskar, Edward Chung

This paper discusses the areawide Dynamic ROad traffic NoisE (DRONE) simulator, and its implementation as a tool for noise abatement policy evaluation. DRONE involves integrating a road traffic noise estimation model with a traffic simulator to estimate ro ...

2007

Mapping Personal Trip OD from Probe Data

Edward Chung

The paper analyses the expected value of OD volumes from probe with fixed error, error that is proportional to zone size and inversely proportional to zone size. To add realism to the analysis, real trip ODs in the Tokyo Metropolitan Region are synthesised ...

2007

Applicability of road safety indicators to assess driving risks under Swiss road conditions

André-Gilles Dumont, Edward Chung, Minh Hai Pham

Road traffic crash is a problem in every country. According to World Health Organization, in Europe there are about 127,000 people killed and at least some 2.4 million injured each year. Incident detection algorithms to detect incidents on motorways are we ...

2007

Dynamic Origin-Destination Matrices Estimation Method for urban Networks

André-Gilles Dumont, Emmanuel Bert, Edward Chung

The aim of this paper is to explore a new approach to obtain better traffic demand (Origin-Destination, OD matrices) in case of dense urban networks. To improve the global process of OD demand estimation, this paper is focussing on a new methodology to exe ...

2007

Season effect on traffic: A case study in Switzerland

André-Gilles Dumont, Edward Chung, Minh Hai Pham

2007

Global emission estimation by using probe vehicles

André-Gilles Dumont, Emmanuel Bert, Edward Chung

Air pollution is becoming a more and more important aspect for transportation, particularly car emission in urban area. The objective of this paper is to evaluate the global emission of a transport network based on probe car and sensor data. Probe vehicles ...

2006