<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Changing factors (mainly traffic intensity and weather conditions) affecting road conditions require a suitable optimal speed at any time. To solve this problem, variable speed limit systems (VSL) - as opposed to fixed limits - have been developed in recent decades. This term has included a number of speed management systems, most notably dynamic speed limits (DSL). In order to avoid the indiscriminate use of both terms in the literature, this paper proposes a simple classification and offers a review of some experiences, how their effects are evaluated and their results This study also presents a key indicator which measures the speed homogeneity and a methodology to obtain the data based on floating cars and GPS technology applying it to a case study on a section of the M30 urban motorway in Madrid (Spain). It also presents the relation between this indicator and road performance and emissions values.</p></abstract>

Changing factors (mainly traffic intensity and weather conditions) affecting road conditions require a suitable optimal speed at any time. To solve this problem, variable speed limit systems (VSL) - as opposed to fixed limits - have been developed in recent decades. This term has included a number of speed management systems, most notably dynamic speed limits (DSL). In order to avoid the indiscriminate use of both terms in the literature, this paper proposes a simple classification and offers a review of some experiences, how their effects are evaluated and their results This study also presents a key indicator which measures the speed homogeneity and a methodology to obtain the data based on floating cars and GPS technology applying it to a case study on a section of the M30 urban motorway in Madrid (Spain). It also presents the relation between this indicator and road performance and emissions values.

Homogenization Effects of Variable Speed Limits

Transportation Research Centre (TRANSyT) Universidad Politecnica de Madrid. Escuela de Ingenieros de Caminos, Canales y Puertos, Avda. Profesor Aranguren s/n. Madrid. Spain Phone: +34 91 336 52 34. Fax: +34 91 336 53 62.

Transportation Research Centre (TRANSyT) Universidad Politecnica de Madrid. Escuela de Ingenieros de Caminos, Canales y Puertos, Avda. Profesor Aranguren s/n. Madrid. Spain Phone: +34 91 336 52 34. Fax: +34 91 336 53 62

Transport and Telecommunication Journal

This article is distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

{"article-title":"Homogenization Effects of Variable Speed Limits"}

Changing factors (mainly traffic intensity and weather conditions) affecting road conditions require a suitable optimal speed at any time. To solve this...

Homogenization Effects of Variable Speed Limits

Published Online: Apr 25, 2014

Page range: 130 - 143

DOI: https://doi.org/10.2478/ttj-2014-0012

Keywords
Effectiveness indicator, variable speed limits, dynamic speed limits, GPS application, speed management, floating car data

© Transport and Telecommunication Institute

This article is distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Homogenization Effects of Variable Speed Limits

Published Online: Apr 25, 2014

Page range: 130 - 143

DOI: https://doi.org/10.2478/ttj-2014-0012

KeywordsEffectiveness indicator, variable speed limits, dynamic speed limits, GPS application, speed management, floating car data

© Transport and Telecommunication Institute

This article is distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Keywords
Effectiveness indicator, variable speed limits, dynamic speed limits, GPS application, speed management, floating car data