Speed responses of trucks to light and weather conditions

Light conditions are essential factors in traffic safety, but the relationship between light conditions and vehicle speed is not fully understood and has rarely been examined for trucks. We asked the following questions: I) if vehicle speed between brighter and darker conditions in clear weather wil...

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Autores principales:	Annika K. Jägerbrand, Jonas Sjöbergh
Formato:	article
Lenguaje:	EN
Publicado:	Taylor & Francis Group 2019
Materias:	ldv hdv driving behaviour rain snow temperature velocity visibility traffic safety Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/c164e46c186f49cc86594f3a14899b0f
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spelling	oai:doaj.org-article:c164e46c186f49cc86594f3a14899b0f2021-11-04T15:51:56ZSpeed responses of trucks to light and weather conditions2331-191610.1080/23311916.2019.1685365https://doaj.org/article/c164e46c186f49cc86594f3a14899b0f2019-01-01T00:00:00Zhttp://dx.doi.org/10.1080/23311916.2019.1685365https://doaj.org/toc/2331-1916Light conditions are essential factors in traffic safety, but the relationship between light conditions and vehicle speed is not fully understood and has rarely been examined for trucks. We asked the following questions: I) if vehicle speed between brighter and darker conditions in clear weather will be different? II) if vehicle speeds are lower during rain and snow than in clear weather conditions? and if so III) if the speed reduction in rainy and snowy weather conditions is more substantial on roads without road lighting in darkness? We investigated how the speed of trucks was affected by weather conditions (clear, rain, and snowfall), daylight, darkness, and road lighting by using traffic and weather data from 25 locations on the Swedish road network. Seventeen of the 25 locations were roads with road lighting. Speed responses by 5,344,287 vehicle passages by trucks was included in the analyses, more specifically 3,659,940 passages by light-duty vehicles and 1,684,347 passages by heavy-duty vehicles. The data was extracted from hourly measurements for the period 2012-09-01 to 2014-05-31. No evidence of consistent patterns of speed differences with respect to lighting conditions (darkness, daylight, twilight or road lighting) under clear weather conditions were detected. Truck speeds decreased in response to snowfall, but not to rain, with the decrease dependant on the amount of snow. Effects of road lighting on speed reduction in rainy and snowy weather was not shown.Annika K. JägerbrandJonas SjöberghTaylor & Francis Grouparticleldvhdvdriving behaviourrainsnowtemperaturevelocityvisibilitytraffic safetyEngineering (General). Civil engineering (General)TA1-2040ENCogent Engineering, Vol 6, Iss 1 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	ldv hdv driving behaviour rain snow temperature velocity visibility traffic safety Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	ldv hdv driving behaviour rain snow temperature velocity visibility traffic safety Engineering (General). Civil engineering (General) TA1-2040 Annika K. Jägerbrand Jonas Sjöbergh Speed responses of trucks to light and weather conditions
description	Light conditions are essential factors in traffic safety, but the relationship between light conditions and vehicle speed is not fully understood and has rarely been examined for trucks. We asked the following questions: I) if vehicle speed between brighter and darker conditions in clear weather will be different? II) if vehicle speeds are lower during rain and snow than in clear weather conditions? and if so III) if the speed reduction in rainy and snowy weather conditions is more substantial on roads without road lighting in darkness? We investigated how the speed of trucks was affected by weather conditions (clear, rain, and snowfall), daylight, darkness, and road lighting by using traffic and weather data from 25 locations on the Swedish road network. Seventeen of the 25 locations were roads with road lighting. Speed responses by 5,344,287 vehicle passages by trucks was included in the analyses, more specifically 3,659,940 passages by light-duty vehicles and 1,684,347 passages by heavy-duty vehicles. The data was extracted from hourly measurements for the period 2012-09-01 to 2014-05-31. No evidence of consistent patterns of speed differences with respect to lighting conditions (darkness, daylight, twilight or road lighting) under clear weather conditions were detected. Truck speeds decreased in response to snowfall, but not to rain, with the decrease dependant on the amount of snow. Effects of road lighting on speed reduction in rainy and snowy weather was not shown.
format	article
author	Annika K. Jägerbrand Jonas Sjöbergh
author_facet	Annika K. Jägerbrand Jonas Sjöbergh
author_sort	Annika K. Jägerbrand
title	Speed responses of trucks to light and weather conditions
title_short	Speed responses of trucks to light and weather conditions
title_full	Speed responses of trucks to light and weather conditions
title_fullStr	Speed responses of trucks to light and weather conditions
title_full_unstemmed	Speed responses of trucks to light and weather conditions
title_sort	speed responses of trucks to light and weather conditions
publisher	Taylor & Francis Group
publishDate	2019
url	https://doaj.org/article/c164e46c186f49cc86594f3a14899b0f
work_keys_str_mv	AT annikakjagerbrand speedresponsesoftruckstolightandweatherconditions AT jonassjobergh speedresponsesoftruckstolightandweatherconditions
_version_	1718444675761700864

Speed responses of trucks to light and weather conditions

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