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Loyal Speed Adaptation Speed limitation by means of an active accelerator and its possible impacts in built-up areas

Almqvist, Sverker LU (2006)
Abstract
Traditional measures for improved traffic safety need to be complemented by modern technologies in the struggle to reduce the consequences of traffic accidents all over the world. This thesis introduces the Loyal Speed Adaptation (LSA) function based on recent developments in the area of Intelligent Transport Sys-tems to support the vehicle drivers in not using inappropriate or excessive speeds, which have been found to be an important factor for causing serious and fatal accidents. The LSA function uses an active accelera-tor, which prevents the driver from exceeding legal speed limits by creating a force feed back in the pedal depending on local speed limits identified and supported by GPS.



The thesis analyses the... (More)
Traditional measures for improved traffic safety need to be complemented by modern technologies in the struggle to reduce the consequences of traffic accidents all over the world. This thesis introduces the Loyal Speed Adaptation (LSA) function based on recent developments in the area of Intelligent Transport Sys-tems to support the vehicle drivers in not using inappropriate or excessive speeds, which have been found to be an important factor for causing serious and fatal accidents. The LSA function uses an active accelera-tor, which prevents the driver from exceeding legal speed limits by creating a force feed back in the pedal depending on local speed limits identified and supported by GPS.



The thesis analyses the traffic safety and user acceptance effects of an introduction of LSA in built-up areas with speed limits 30, 50 and 70 km/h. The results show that considerable speed reductions were obtained when the LSA function was used. It was also possible to compare the effects between the field trial with 284 vehicles in Lund with an option of overriding speed limits and the LSA function. The result showed that the LSA function contributed to an improved traffic safety by reducing the number of fatal and seri-ous injuries by 5 - 8% and 4 - 7% more than with the system possible to override the limits.



User acceptance increased after experience and the drivers appreciated the support the LSA function pro-vided them with. The conclusion is that the LSA function can be an important tool for improving the traffic safety in built-up areas and it can support the Swedish traffic safety program Vision Zero towards a society without health losses. (Less)
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author
supervisor
opponent
  • Professor Brookhuis, Karel, Delft University of Technology
organization
publishing date
type
Thesis
publication status
published
subject
keywords
active accelerator, LSA, speed, speed reduction, driver behaviour, traffic safety, ISA, Teknik, Technological sciences, Road transport technology, Vägtransportteknik
pages
109 pages
publisher
Traffic Engineering
defense location
Auditorioum V:A V-huset John Ericssons väg 1 Lund
defense date
2006-12-15 10:15
ISSN
1404-272X
language
English
LU publication?
yes
id
b6fc9513-ccf8-4c38-93bd-ccaf4f4881d4 (old id 25619)
date added to LUP
2007-06-05 12:43:35
date last changed
2016-09-19 08:44:52
@phdthesis{b6fc9513-ccf8-4c38-93bd-ccaf4f4881d4,
  abstract     = {Traditional measures for improved traffic safety need to be complemented by modern technologies in the struggle to reduce the consequences of traffic accidents all over the world. This thesis introduces the Loyal Speed Adaptation (LSA) function based on recent developments in the area of Intelligent Transport Sys-tems to support the vehicle drivers in not using inappropriate or excessive speeds, which have been found to be an important factor for causing serious and fatal accidents. The LSA function uses an active accelera-tor, which prevents the driver from exceeding legal speed limits by creating a force feed back in the pedal depending on local speed limits identified and supported by GPS.<br/><br>
<br/><br>
The thesis analyses the traffic safety and user acceptance effects of an introduction of LSA in built-up areas with speed limits 30, 50 and 70 km/h. The results show that considerable speed reductions were obtained when the LSA function was used. It was also possible to compare the effects between the field trial with 284 vehicles in Lund with an option of overriding speed limits and the LSA function. The result showed that the LSA function contributed to an improved traffic safety by reducing the number of fatal and seri-ous injuries by 5 - 8% and 4 - 7% more than with the system possible to override the limits.<br/><br>
<br/><br>
User acceptance increased after experience and the drivers appreciated the support the LSA function pro-vided them with. The conclusion is that the LSA function can be an important tool for improving the traffic safety in built-up areas and it can support the Swedish traffic safety program Vision Zero towards a society without health losses.},
  author       = {Almqvist, Sverker},
  issn         = {1404-272X},
  keyword      = {active accelerator,LSA,speed,speed reduction,driver behaviour,traffic safety,ISA,Teknik,Technological sciences,Road transport technology,Vägtransportteknik},
  language     = {eng},
  pages        = {109},
  publisher    = {Traffic Engineering},
  school       = {Lund University},
  title        = {Loyal Speed Adaptation Speed limitation by means of an active accelerator and its possible impacts in built-up areas},
  year         = {2006},
}