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Validation of in-car observations, a method for driver assessment

Hjälmdahl, Magnus LU and Varhelyi, Andras LU (2004) In Transportation Research. Part A: Policy & Practice 38(2). p.127-142
Abstract
An in-car observation method with human observers in the car was studied to establish whether observers could be trained to observe safety variables and register driver's behaviour in a correct and coherent way, and whether the drivers drove in their normal driving style, despite the presence of the observers. The study further discussed the observed variables from a safety perspective. First three observers were trained in the observation method and on-road observations were carried out. Their observations were then compared with a key representing a correct observation. After practising the observation method the observers showed a high correlation with the key. To establish whether the test drivers drove in a normal way during the... (More)
An in-car observation method with human observers in the car was studied to establish whether observers could be trained to observe safety variables and register driver's behaviour in a correct and coherent way, and whether the drivers drove in their normal driving style, despite the presence of the observers. The study further discussed the observed variables from a safety perspective. First three observers were trained in the observation method and on-road observations were carried out. Their observations were then compared with a key representing a correct observation. After practising the observation method the observers showed a high correlation with the key. To establish whether the test drivers drove in a normal way during the in-car observations, comparisons of 238 spot-speed measurements were carried out. Driver's speeds when driving their own private cars were compared with their speeds during the in-car observations. The analysis showed that the drivers drove in the same way when being observed as they did normally. Most of the variables studied in the in-car observations had a well documented relevance to traffic safety. Overall, in-car observation was shown to be a reliable and valid method to observe driver behaviour, and observed changes provide relevant data on traffic safety. (C) 2003 Elsevier Ltd. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
method, safety assessment, driver behaviour, in-car observations, validation
in
Transportation Research. Part A: Policy & Practice
volume
38
issue
2
pages
127 - 142
publisher
Elsevier
external identifiers
  • wos:000188300000003
  • scopus:0346724865
ISSN
0965-8564
DOI
10.1016/j.tra.2003.09.001
language
English
LU publication?
yes
id
65b39261-74d4-4076-98d8-4cb2e0975e75 (old id 288892)
date added to LUP
2007-10-30 14:56:57
date last changed
2017-01-08 05:18:44
@article{65b39261-74d4-4076-98d8-4cb2e0975e75,
  abstract     = {An in-car observation method with human observers in the car was studied to establish whether observers could be trained to observe safety variables and register driver's behaviour in a correct and coherent way, and whether the drivers drove in their normal driving style, despite the presence of the observers. The study further discussed the observed variables from a safety perspective. First three observers were trained in the observation method and on-road observations were carried out. Their observations were then compared with a key representing a correct observation. After practising the observation method the observers showed a high correlation with the key. To establish whether the test drivers drove in a normal way during the in-car observations, comparisons of 238 spot-speed measurements were carried out. Driver's speeds when driving their own private cars were compared with their speeds during the in-car observations. The analysis showed that the drivers drove in the same way when being observed as they did normally. Most of the variables studied in the in-car observations had a well documented relevance to traffic safety. Overall, in-car observation was shown to be a reliable and valid method to observe driver behaviour, and observed changes provide relevant data on traffic safety. (C) 2003 Elsevier Ltd. All rights reserved.},
  author       = {Hjälmdahl, Magnus and Varhelyi, Andras},
  issn         = {0965-8564},
  keyword      = {method,safety assessment,driver behaviour,in-car observations,validation},
  language     = {eng},
  number       = {2},
  pages        = {127--142},
  publisher    = {Elsevier},
  series       = {Transportation Research. Part A: Policy & Practice},
  title        = {Validation of in-car observations, a method for driver assessment},
  url          = {http://dx.doi.org/10.1016/j.tra.2003.09.001},
  volume       = {38},
  year         = {2004},
}