Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/122913
Title: | The environmental effects of changing speed limits: A quantile regression approach |
Author: | Bel i Queralt, Germà, 1963- Bolancé Losilla, Catalina Guillén, Montserrat Rosell i Segura, Jordi |
Keywords: | Enginyeria del trànsit Contaminació atmosfèrica Anàlisi de regressió Estadística quàntica Traffic engineering Atmospheric pollution Regression analysis Quantum statistics |
Issue Date: | May-2015 |
Publisher: | Elsevier Ltd |
Abstract: | Two speed management policies were implemented in the metropolitan area of Barcelona aimed at reducing air pollution concentration levels. In 2008, the maximum speed limit was reduced to 80 km/h and, in 2009, a variable speed system was introduced on some metropolitan motorways. This paper evaluates whether such policies have been successful in promoting cleaner air, not only in terms of average pollutant levels but also during high and low pollution episodes. To do so, we use a quantile regression approach for fixed effect panel data, which allows us analyzing different scenarios (beyond the average levels). We find that the variable speed system improves air quality with regard to the two pollutants considered here, being most effective when nitrogen oxide levels are not too low and when particulate matter concentrations are below extremely high levels. However, reducing the maximum speed limit from 120/100 km/h to 80 km/h has no effect - or even a slightly increasing effect - on the two pollutants, depending on the pollution scenario. |
Note: | Versió postprint del document publicat a: https://doi.org/10.1016/j.trd.2015.02.003 |
It is part of: | Transportation Research Part D: Transport and Environment, 2015, vol. 36, num. May, p. 76-85 |
URI: | http://hdl.handle.net/2445/122913 |
Related resource: | https://doi.org/10.1016/j.trd.2015.02.003 |
ISSN: | 1361-9209 |
Appears in Collections: | Articles publicats en revistes (Econometria, Estadística i Economia Aplicada) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
655971.pdf | 679.06 kB | Adobe PDF | View/Open |
This item is licensed under a Creative Commons License