== Abstract ==

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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.

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Document type: Article

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== Full document ==

<pdf>Media:Draft_Content_382873816-beopen179-8745-document.pdf</pdf>

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== Original document ==

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The different versions of the original document can be found in:

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* [http://diposit.ub.edu/dspace/bitstream/2445/122913/1/655971.pdf http://diposit.ub.edu/dspace/bitstream/2445/122913/1/655971.pdf] under the license https://creativecommons.org/licenses/by-nc-nd

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* [http://dx.doi.org/10.1016/j.trd.2015.02.003 http://dx.doi.org/10.1016/j.trd.2015.02.003] under the license cc-by-nc-nd

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* [http://dx.doi.org/10.2139/ssrn.2533098 http://dx.doi.org/10.2139/ssrn.2533098]

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* [http://hdl.handle.net/2072/243326 http://hdl.handle.net/2072/243326]

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* [http://hdl.handle.net/2445/122913 http://hdl.handle.net/2445/122913]

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* [http://www.xreap.cat/RePEc/xrp/pdf/XREAP2014-09.pdf http://www.xreap.cat/RePEc/xrp/pdf/XREAP2014-09.pdf] under the license http://creativecommons.org/licenses/by-nc-nd/3.0/es

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* [http://hdl.handle.net/20.500.11797/PC2461 http://hdl.handle.net/20.500.11797/PC2461],

: [http://hdl.handle.net/2072/243326 http://hdl.handle.net/2072/243326]

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: [http://dx.doi.org/10.1016/j.trd.2015.02.003 http://dx.doi.org/10.1016/j.trd.2015.02.003]

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* [https://www.sciencedirect.com/science/article/pii/S1361920915000127 https://www.sciencedirect.com/science/article/pii/S1361920915000127],

: [http://diposit.ub.edu/dspace/bitstream/2445/122913/1/655971.pdf http://diposit.ub.edu/dspace/bitstream/2445/122913/1/655971.pdf],

: [http://diposit.ub.edu/dspace/handle/2445/122913 http://diposit.ub.edu/dspace/handle/2445/122913],

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: [https://econpapers.repec.org/RePEc:xrp:wpaper:xreap2014-09 https://econpapers.repec.org/RePEc:xrp:wpaper:xreap2014-09],

: [https://www.ssrn.com/abstract=2533098 https://www.ssrn.com/abstract=2533098],

: [http://www.sciencedirect.com/science/article/pii/S1361920915000127 http://www.sciencedirect.com/science/article/pii/S1361920915000127],

: [https://www.safetylit.org/citations/index.php?fuseaction=citations.viewdetails&citationIds[]=citjournalarticle_479336_38 https://www.safetylit.org/citations/index.php?fuseaction=citations.viewdetails&citationIds[]=citjournalarticle_479336_38],

: [https://academic.microsoft.com/#/detail/2082100557 https://academic.microsoft.com/#/detail/2082100557] under the license https://www.elsevier.com/tdm/userlicense/1.0/

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DOIS: 10.1016/j.trd.2015.02.003 10.2139/ssrn.2533098

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