Ellen Grumert


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Ellens forskningsresultat


Traffic management for smart cities

Smart cities, participatory sensing as well as location data available in communication systems and social networks generates a vast amount of heterogeneous mobility data that can be used for traffic management. This chapter gives an overview of the...

Evaluation of Four Control Algorithms Used in Variable Speed Limit Systems

Control algorithms used for deciding on the speed limits in variable speed limit systems are crucial for the performance of the system. Today, many of the control algorithms used are based on fixed thresholds in speed and/or flow for lowering and...

Analysis of a cooperative variable speed limit system using microscopic traffic simulation

Variable speed limit systems where variable message signs are used to show speed limits adjusted to the prevailing road or traffic conditions are installed on motorways in many countries. The objectives of variable speed limit system installations...

Cooperative Variable Speed Limit Systems: Modeling and Evaluation using Microscopic...

During the last decades the road traffic has increased tremendously leading to congestion, safety issues and increased environmental impacts. As a result, many countries are continuously trying to find improvements and new solutions to solve these...

Microscopic traffic simulation for evaluation of a cooperative variable speed limit system

Variable Speed Limit Systems (VSLS) where gantries are showing speed limits based on, for example, traffic volume or other road or traffic conditions exists on motorways in many countries. The aim of the VSLS is usually to improve traffic...

Effects of a Cooperative Variable Speed Limit System on Traffic Performance and Exhaust...

Variable Speed Limit Systems (VSLS) where variable message signs show speed limits based on traffic or road conditions exist on motorways in many countries. The purpose of the VSLS is to decrease the number of accidents while increasing efficiency...

Impacts of a Cooperative Variable Speed Limit System

Variable Speed Limit Systems (VSLS) where variable message signs show speed limits based on, for example,traffic volume or road conditions exists on motorwaysin many countries. The purpose of the VSLS is to decrease the number of accidents and to...

Hastighetsdämpande åtgärder: en litteraturstudie med fokus på nya trafikmiljöåtgärder och...

A literature survey has been conducted regarding international traffic calming measures that could have a potential use in Sweden and other Nordic countries. Focus has been on measures in new traffic environments and ITS (Intelligent Transport...

Cooperative systems: an overview

The objective of this report is to give an introduction to the subject of cooperative systems and an overview of projects related to cooperative systems. Issues related to cooperative systems are also discussed in the report. Two areas of great...