Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Speed Responses to Speed Humps as Affected by Time of Day and Light Conditions on a Residential Road with Light-Emitting Diode (LED) Road Lighting
Calluna AB, Nacka, Sweden.ORCID iD: 0000-0001-5322-9827
Lund University, Lund, Sweden.
Lund University, Lund, Sweden.
2018 (English)In: Safety, E-ISSN 2313-576X, no 1, article id 10Article in journal (Refereed) Published
Abstract [en]

The speed-reducing effect of speed humps during darkness is important to ensure a consistent speed reduction and a decreased probability of accidents during darkness. This study examined the effects of speed humps, compared with a control location, on a residential road in Sweden with light-emitting diode (LED) street lighting and a 30 km/h posted speed limit. Hypotheses tested were that: (I) vehicle speed is higher during daylight than in darkness; (II) speed at speed humps is lower than at control locations during both daylight and darkness; (III) speed at humps is higher during daylight; (IV) vehicle speed at humps is lower when luminance or visibility of the humps is greater; and, (V) the road environment of speed humps is perceived as being similar by drivers. The results showed that vehicle speed at the control location was negligibly higher (+0.3 km/h) during daylight than in darkness. Speed humps reduced driving speed by 20% when compared with the posted speed limit and the effect was not significantly different between daylight and darkness. Speed reduction for the three speed humps varied between 9% and 29% as compared with the posted speed limit. In this study, the LED road lighting that was placed directly above or in front of the hump achieved the highest luminance. This study could not reveal any significant differences in vehicle speed attributable to light conditions per se.

Place, publisher, year, edition, pages
Basel, 2018. no 1, article id 10
Keywords [en]
speed-reduction, measures, street, lighting, day; night, traffic calming
National Category
Infrastructure Engineering
Identifiers
URN: urn:nbn:se:hj:diva-41010DOI: 10.3390/safety4010010ISI: 000428668800010OAI: oai:DiVA.org:hj-41010DiVA, id: diva2:1233708
Available from: 2018-07-19 Created: 2018-07-19 Last updated: 2018-07-19Bibliographically approved

Open Access in DiVA

fulltext(5585 kB)3 downloads
File information
File name FULLTEXT01.pdfFile size 5585 kBChecksum SHA-512
ee8e244299d6d0b27546c301200b646f5e415b6a6a9b50ae3dd6da6faccca8175d947e2af21b8e9c2515394b5ca77b4cb6149aabf297dd8bd6515b55dd84b155
Type fulltextMimetype application/pdf

Other links

Publisher's full text

Authority records BETA

Jägerbrand, Annika K.

Search in DiVA

By author/editor
Jägerbrand, Annika K.
Infrastructure Engineering

Search outside of DiVA

GoogleGoogle Scholar
Total: 3 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 3 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf