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Improving roundabouts for cyclists and visually impaired

Sakshaug, Lisa LU (2009)
Abstract
Roundabouts are continuing to increase due to their high traffic safety, low

delay times and their winning design. However, there are also problems related to roundabouts; the traffic safety for cyclists is unclear or even negative and there are reports of accessibility problems for people with visual impairment. The overall objective of this project is to identify designs that improve the situation for these two groups of road users in roundabouts. This implies that acquiring a profound understanding of the current problems and state of knowledge is a prerequisite. Cyclist

behaviour, interactions with motorists and the resulting safety were studied in two roundabouts, one with separated cycle crossings and one without... (More)
Roundabouts are continuing to increase due to their high traffic safety, low

delay times and their winning design. However, there are also problems related to roundabouts; the traffic safety for cyclists is unclear or even negative and there are reports of accessibility problems for people with visual impairment. The overall objective of this project is to identify designs that improve the situation for these two groups of road users in roundabouts. This implies that acquiring a profound understanding of the current problems and state of knowledge is a prerequisite. Cyclist

behaviour, interactions with motorists and the resulting safety were studied in two roundabouts, one with separated cycle crossings and one without cycle facilities. Low vision and blind people were interviewed in focus group interviews and a questionnaire survey to find out in what way roundabouts differ from other intersection types and to investigate whether there are design solutions to make roundabouts more accessible. The results show that signalised intersections are more accessible than roundabouts. Despite this, they are not perceived as safer. Moreover, no difference in accessibility is found between roundabouts and four-way intersections

without signalisation. Roundabouts with separate cycle crossings seem to be safer than those without cycle facility. Roundabouts without a cycle facility are more complex in that they have more conflict points and more interaction types between cyclists and motorists. The implications of the results for the other road user group (cyclists/visually impaired) are also discussed. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Thesis
publication status
published
subject
keywords
accessibility, safety, visually impaired, cyclist, roundabout
pages
106 pages
publisher
Lunds tekniska högskola, instutionen för teknik och samhälle, trafik och väg
external identifiers
  • other:CODEN:LUTVDG/(TVTT-3203)1-106/2009
language
English
LU publication?
yes
id
269c0270-9833-4526-82ea-3a7ac0b2d1b1 (old id 1648998)
date added to LUP
2010-08-05 14:34:08
date last changed
2016-09-19 08:44:47
@misc{269c0270-9833-4526-82ea-3a7ac0b2d1b1,
  abstract     = {Roundabouts are continuing to increase due to their high traffic safety, low<br/><br>
delay times and their winning design. However, there are also problems related to roundabouts; the traffic safety for cyclists is unclear or even negative and there are reports of accessibility problems for people with visual impairment. The overall objective of this project is to identify designs that improve the situation for these two groups of road users in roundabouts. This implies that acquiring a profound understanding of the current problems and state of knowledge is a prerequisite. Cyclist<br/><br>
behaviour, interactions with motorists and the resulting safety were studied in two roundabouts, one with separated cycle crossings and one without cycle facilities. Low vision and blind people were interviewed in focus group interviews and a questionnaire survey to find out in what way roundabouts differ from other intersection types and to investigate whether there are design solutions to make roundabouts more accessible. The results show that signalised intersections are more accessible than roundabouts. Despite this, they are not perceived as safer. Moreover, no difference in accessibility is found between roundabouts and four-way intersections<br/><br>
without signalisation. Roundabouts with separate cycle crossings seem to be safer than those without cycle facility. Roundabouts without a cycle facility are more complex in that they have more conflict points and more interaction types between cyclists and motorists. The implications of the results for the other road user group (cyclists/visually impaired) are also discussed.},
  author       = {Sakshaug, Lisa},
  keyword      = {accessibility,safety,visually impaired,cyclist,roundabout},
  language     = {eng},
  note         = {Licentiate Thesis},
  pages        = {106},
  publisher    = {Lunds tekniska högskola, instutionen för teknik och samhälle, trafik och väg},
  title        = {Improving roundabouts for cyclists and visually impaired},
  year         = {2009},
}