Solar-Powered Active Road Studs and Highway Infrastructure: Effect on Vehicle Speeds

Vehicle speeds have a direct relationship with the severity of road crashes and may influence their probability of occurrence. Solar-powered active road studs have been shown to have a positive effect on driver confidence, but their impact on vehicle speed in conjunction with other road features is...

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Autores principales:	Richard Llewellyn, Jonathan Cowie, Grigorios Fountas
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	active road studs highway infrastructure vehicle speeds road safety road features Technology T
Acceso en línea:	https://doaj.org/article/6987395dbe494896ac7431ccb8307a16
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spelling	oai:doaj.org-article:6987395dbe494896ac7431ccb8307a162021-11-11T15:58:47ZSolar-Powered Active Road Studs and Highway Infrastructure: Effect on Vehicle Speeds10.3390/en142172091996-1073https://doaj.org/article/6987395dbe494896ac7431ccb8307a162021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/21/7209https://doaj.org/toc/1996-1073Vehicle speeds have a direct relationship with the severity of road crashes and may influence their probability of occurrence. Solar-powered active road studs have been shown to have a positive effect on driver confidence, but their impact on vehicle speed in conjunction with other road features is little understood. This study aims to address this gap in knowledge through a case study of a 20 km section of a strategic major road featuring a variety of highway infrastructure features. Before-and-after surveys were undertaken at 21 locations along the route using manual radar speed measurement. Analysis of nearly 10,000 speed measurements showed no statistically significant change in mean speeds following the implementation of the road studs. Linear regression models are proposed for two different posted speed limits, associating road features with expected vehicle speed. The models suggest that vehicle speeds are chiefly influenced by merges, curves, gradients, and ambient light conditions. The findings of this study should provide confidence that active road studs may be implemented without a negative impact on speed-related safety. The work also provides further expansion of the evidence base describing the effect of highway infrastructure features on vehicle speeds.Richard LlewellynJonathan CowieGrigorios FountasMDPI AGarticleactive road studshighway infrastructurevehicle speedsroad safetyroad featuresTechnologyTENEnergies, Vol 14, Iss 7209, p 7209 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	active road studs highway infrastructure vehicle speeds road safety road features Technology T
spellingShingle	active road studs highway infrastructure vehicle speeds road safety road features Technology T Richard Llewellyn Jonathan Cowie Grigorios Fountas Solar-Powered Active Road Studs and Highway Infrastructure: Effect on Vehicle Speeds
description	Vehicle speeds have a direct relationship with the severity of road crashes and may influence their probability of occurrence. Solar-powered active road studs have been shown to have a positive effect on driver confidence, but their impact on vehicle speed in conjunction with other road features is little understood. This study aims to address this gap in knowledge through a case study of a 20 km section of a strategic major road featuring a variety of highway infrastructure features. Before-and-after surveys were undertaken at 21 locations along the route using manual radar speed measurement. Analysis of nearly 10,000 speed measurements showed no statistically significant change in mean speeds following the implementation of the road studs. Linear regression models are proposed for two different posted speed limits, associating road features with expected vehicle speed. The models suggest that vehicle speeds are chiefly influenced by merges, curves, gradients, and ambient light conditions. The findings of this study should provide confidence that active road studs may be implemented without a negative impact on speed-related safety. The work also provides further expansion of the evidence base describing the effect of highway infrastructure features on vehicle speeds.
format	article
author	Richard Llewellyn Jonathan Cowie Grigorios Fountas
author_facet	Richard Llewellyn Jonathan Cowie Grigorios Fountas
author_sort	Richard Llewellyn
title	Solar-Powered Active Road Studs and Highway Infrastructure: Effect on Vehicle Speeds
title_short	Solar-Powered Active Road Studs and Highway Infrastructure: Effect on Vehicle Speeds
title_full	Solar-Powered Active Road Studs and Highway Infrastructure: Effect on Vehicle Speeds
title_fullStr	Solar-Powered Active Road Studs and Highway Infrastructure: Effect on Vehicle Speeds
title_full_unstemmed	Solar-Powered Active Road Studs and Highway Infrastructure: Effect on Vehicle Speeds
title_sort	solar-powered active road studs and highway infrastructure: effect on vehicle speeds
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/6987395dbe494896ac7431ccb8307a16
work_keys_str_mv	AT richardllewellyn solarpoweredactiveroadstudsandhighwayinfrastructureeffectonvehiclespeeds AT jonathancowie solarpoweredactiveroadstudsandhighwayinfrastructureeffectonvehiclespeeds AT grigoriosfountas solarpoweredactiveroadstudsandhighwayinfrastructureeffectonvehiclespeeds
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Solar-Powered Active Road Studs and Highway Infrastructure: Effect on Vehicle Speeds

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