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af Wåhlberg, Anders
Alternative names
Publications (10 of 16) Show all publications
af Wåhlberg, A. (2012). Changes in Driver Celeration Behavior over Time: do Drivers Learn from Collisions?. Transportation Research Part F: Traffic Psychology and Behaviour, 15(5), 471-479
Open this publication in new window or tab >>Changes in Driver Celeration Behavior over Time: do Drivers Learn from Collisions?
2012 (English)In: Transportation Research Part F: Traffic Psychology and Behaviour, ISSN 1369-8478, E-ISSN 1873-5517, Vol. 15, no 5, p. 471-479Article in journal (Refereed) Published
Abstract [en]

Although it is well known that drivers’ accident risk changes with experience, it has never been specified exactly how this comes about in terms of changes of behaviour, or what features of their experiences are important for this change. One possibility is that drivers learn from their collision involvement, and change their behaviour after such events, as some studies indicate. However, relative accident involvement tends to be very stable over time, which indicates the opposite. Repeated measurements of celeration (speed change) behaviour of bus drivers were compared between two groups; drivers without accidents within the measurement period (about 3 years), and drivers with at least one crash. For the crash group, there was a steady decline in their celeration values over time, but this was not related to their crashes. A similar reduction was also present for the non-crash sample. The results would seem to be in agreement with the theory of accident proneness; there exist stability in driver behaviour over time, despite accident involvement. However, this stability is relative within the sample, and not absolute. The reduction in celeration values for both groups over time would seem to indicate that drivers learn from their experiences in general, but not specifically from accidents. The present study seems to indicate that daily experience of driving situations is the strongest factor for changes in driving behaviour.

Keywords
Driving experience, Accident, Driver behaviour, Celeration
National Category
Psychology
Identifiers
urn:nbn:se:uu:diva-179610 (URN)10.1016/j.trf.2012.04.002 (DOI)000307915200001 ()
Available from: 2012-08-20 Created: 2012-08-20 Last updated: 2017-12-07Bibliographically approved
Af Wåhlberg, A., Dorn, L. & Freeman, J. (2012). Commentary on the rebuttal by de Winter and Dodou.. Journal of Safety Research, 43(1), 90-3
Open this publication in new window or tab >>Commentary on the rebuttal by de Winter and Dodou.
2012 (English)In: Journal of Safety Research, ISSN 0022-4375, E-ISSN 1879-1247, Vol. 43, no 1, p. 90-3Article in journal (Other academic) Published
National Category
Psychology
Identifiers
urn:nbn:se:uu:diva-170518 (URN)10.1016/j.jsr.2011.06.014 (DOI)22385747 (PubMedID)
Available from: 2012-03-12 Created: 2012-03-12 Last updated: 2017-12-07
af Wåhlberg, A. (2012). Memory effects in self-reports of crashes. In: L. Dorn (Ed.), Driver Behaviour and Training, Volume V. Paper presented at Fifth International Conference on Driver Behaviour and Training, Paris November 29-30, 2011. (pp. 283-288). , V
Open this publication in new window or tab >>Memory effects in self-reports of crashes
2012 (English)In: Driver Behaviour and Training, Volume V / [ed] L. Dorn, 2012, Vol. V, p. 283-288Conference paper, Published paper (Refereed)
National Category
Psychology
Identifiers
urn:nbn:se:uu:diva-183143 (URN)
Conference
Fifth International Conference on Driver Behaviour and Training, Paris November 29-30, 2011.
Available from: 2012-10-23 Created: 2012-10-23 Last updated: 2012-12-20Bibliographically approved
af Wåhlberg, A. & Dorn, L. (2012). "The Driver Behaviour Questionnaire as a predictor of accidents: A meta-analysis" Comments.. Journal of Safety Research, 43(1), 83-85
Open this publication in new window or tab >>"The Driver Behaviour Questionnaire as a predictor of accidents: A meta-analysis" Comments.
2012 (English)In: Journal of Safety Research, ISSN 0022-4375, E-ISSN 1879-1247, Vol. 43, no 1, p. 83-85Article in journal (Other academic) Published
National Category
Psychology
Identifiers
urn:nbn:se:uu:diva-170516 (URN)10.1016/j.jsr.2011.06.012 (DOI)22385745 (PubMedID)
Available from: 2012-03-12 Created: 2012-03-12 Last updated: 2017-12-07Bibliographically approved
af Wåhlberg, A. (2011). Re-education of young driving offenders: Effects on recorded offences and self-reported collisions. Transportation Research Part F: Traffic Psychology and Behaviour, 14(4), 291-299
Open this publication in new window or tab >>Re-education of young driving offenders: Effects on recorded offences and self-reported collisions
2011 (English)In: Transportation Research Part F: Traffic Psychology and Behaviour, ISSN 1369-8478, E-ISSN 1873-5517, Vol. 14, no 4, p. 291-299Article in journal (Refereed) Published
Abstract [en]

New ways of educating offending drivers are being introduced, notably e-learning. This type of education has rarely been tested for its safety effects before. An e-learning course for offending young drivers was therefore evaluated as to its effects upon offence and self-reported collision rates. Significant reductions in number of offences and penalty points were found for an e-learning group, while this was not the case for drivers who had been fined only, or had taken a more traditional solely class-room based educational scheme. The e-learners also reported a larger reduction in collision involvement than a random control group, although a regression to the mean effect could not be ruled out. The results seem to indicate a positive effect of the e-learning course for young driving offenders. This conclusion, however, is to be interpreted in relation to the weak association between penalty points and collisions, and the low validity of self-reported collision involvement data. The present results lend further support to the use of e-learning driver improvement courses, although the most important type of data, recorded collisions, is still missing.

Keywords
Evaluation, Driver improvement, Driver education, Driving offence, Collision, Accident
National Category
Social Sciences
Identifiers
urn:nbn:se:uu:diva-153351 (URN)10.1016/j.trf.2011.02.002 (DOI)000290421600003 ()
Available from: 2011-05-11 Created: 2011-05-11 Last updated: 2017-12-11Bibliographically approved
af Wåhlberg, A., Dorn, L. & Kline, T. (2011). The Manchester Driver Behaviour Questionnaire as predictor of road traffic accidents. Theoretical Issues in Ergonomics Science, 12, 66-86
Open this publication in new window or tab >>The Manchester Driver Behaviour Questionnaire as predictor of road traffic accidents
2011 (English)In: Theoretical Issues in Ergonomics Science, ISSN 1463-922X, E-ISSN 1464-536X, Vol. 12, p. 66-86Article in journal (Refereed) Published
National Category
Psychology
Identifiers
urn:nbn:se:uu:diva-108301 (URN)10.1080/14639220903023376 (DOI)
Available from: 2009-09-14 Created: 2009-09-14 Last updated: 2017-12-13Bibliographically approved
Dorn, L., Stephens, L., af Wåhlberg, A. & Gandolfi, J. (2010). Development and validation of a self-report measure of bus driver behaviour. Ergonomics, 53(12), 1420-1433
Open this publication in new window or tab >>Development and validation of a self-report measure of bus driver behaviour
2010 (English)In: Ergonomics, ISSN 0014-0139, E-ISSN 1366-5847, Vol. 53, no 12, p. 1420-1433Article in journal (Refereed) Published
Abstract [en]

There are likely to be individual differences in bus driver behaviour when adhering to strict schedules under time pressure. A reliable and valid assessment of these individual differences would be useful for bus companies keen to mitigate risk of crash involvement. This paper reports on three studies to develop and validate a self-report measure of bus driver behaviour. For study 1, two principal components analyses of a pilot questionnaire revealed six components describing bus driver behaviour and four bus driver coping components. In study 2, test-retest reliability of the components were tested in a sub-sample and found to be adequate. Further, the 10 components were used to predict bus crash involvement at three levels of culpability with consistently significant associations found for two components. For study 3, avoidance coping was consistently associated with celeration variables in a bus simulator, especially for a time-pressured drive. Statement of Relevance: The instrument can be used by bus companies for driver stress and fatigue management training to identify at-risk bus driver behaviour. Training to reduce the tendency to engage in avoidance coping strategies, improve evaluative coping strategies and hazard monitoring when under stress may improve bus driver safety.

Keywords
Bus driver, Crash, Driver behaviour, Traffic safety
National Category
Social Sciences
Research subject
Psychology
Identifiers
urn:nbn:se:uu:diva-134315 (URN)10.1080/00140139.2010.532882 (DOI)000284627700002 ()21108079 (PubMedID)
Available from: 2010-11-24 Created: 2010-11-24 Last updated: 2017-12-12Bibliographically approved
af Wåhlberg, A. (2010). Driver research myths. In: Lisa Dorn (Ed.), Fourth International Conference on Driver Behaviour and Training. Paper presented at Fourth International Conference on Driver Behaviour and Training 2009 (pp. 3-6). Aldershot: Ashgate
Open this publication in new window or tab >>Driver research myths
2010 (English)In: Fourth International Conference on Driver Behaviour and Training / [ed] Lisa Dorn, Aldershot: Ashgate , 2010, p. 3-6Conference paper, Published paper (Other academic)
Place, publisher, year, edition, pages
Aldershot: Ashgate, 2010
Series
Human Factors in Road and Rail Transport
Keywords
transportation
Research subject
Psychology
Identifiers
urn:nbn:se:uu:diva-108318 (URN)
Conference
Fourth International Conference on Driver Behaviour and Training 2009
Available from: 2009-09-15 Created: 2009-09-15 Last updated: 2010-12-10Bibliographically approved
af Wåhlberg, A. (2010). Social desirability effects in driver behavior inventories. Journal of Safety Research, 41(2), 99-106
Open this publication in new window or tab >>Social desirability effects in driver behavior inventories
2010 (English)In: Journal of Safety Research, ISSN 0022-4375, E-ISSN 1879-1247, Vol. 41, no 2, p. 99-106Article in journal (Refereed) Published
Abstract [en]

Problem: The use of lie scales to control for common method variance in driver behavior inventories has been very limited. Given that such questionnaires often use self-reported safety variables as criteria, and have social implications, the risk of artefactual associations is high. Method: A questionnaire containing scales from several well known driver inventories that have been claimed to predict traffic accident involvement was distributed three times to a group of young drivers in a driver education program, as well as a random group twice. The Driver Impression Management scale (DIM) was used to control for socially desirable responding. Results: For all behavior scales, the correlation with the DIM scale was substantial. If a scale correlated with self-reported crashes, the amount of predictive power was more than halved when social desirability was controlled for. Results were similar for both samples and all waves. The predictive power of the behavior scales was not increased when values were averaged over questionnaire waves, as should have been the case if the measurement and predictive power were valid. Results were similar for self-reported penalty points. The present results indicate that even the most well-known and accepted psychometric scales used in driver research are susceptible to social desirability bias. Discussion: As social desirability is only one of a number of common method variance mechanisms that can create artefactual associations, and the great popularity of the self-report methodology, the problem for traffic research is grave. Impact on industry: Organizations that fund traffic safety research need to re-evaluate their policies regarding what methods are acceptable. The use of self-reported independent and dependent variables can lead to directly misleading results, with negative effects on traffic safety.

National Category
Psychology
Identifiers
urn:nbn:se:uu:diva-136214 (URN)10.1016/j.jsr.2010.02.005 (DOI)000279061900005 ()
Available from: 2010-12-10 Created: 2010-12-10 Last updated: 2017-12-11Bibliographically approved
af Wåhlberg, A., Dorn, L. & Kline, T. (2010). The effect of social desirability on self reported and recorded road traffic accidents. Transportation Research Part F: Traffic Psychology and Behaviour, 13(2), 106-114
Open this publication in new window or tab >>The effect of social desirability on self reported and recorded road traffic accidents
2010 (English)In: Transportation Research Part F: Traffic Psychology and Behaviour, ISSN 1369-8478, E-ISSN 1873-5517, Vol. 13, no 2, p. 106-114Article in journal (Refereed) Published
Abstract [en]

The use of lie scales has a fairly long history in psychometrics, with the intention of identifying and correcting for socially desirable answers. This represents one type of common method variance (bias introduced when both predictors and predicted variables are gathered from the same source), which may lead to spurious associations in self-reports. Within traffic safety research, where self-report methods are used abundantly, it is uncommon to control for social desirability artifacts, or reporting associations between lie scales, crashes and driver behaviour scales. In the present study, it was shown that self-reports of traffic accidents were negatively associated with a lie scale for driving, while recorded ones were not, as could be expected if the scale was valid and a self-report bias existed. We conclude that whenever self-reported crashes are used as an outcome variable and predicted by other self-report measures, a lie scale should be included and used for correcting the associations. However, the only existing lie scale for traffic safety is not likely to catch all socially desirable responding, because traffic safety may not be desirable for all demographic groups. New lie scales should be developed specifically for driver behaviour questionnaires, to counter potential bias and artifactual results. Alternatively, the use of a single source of data should be discontinued.

National Category
Social Sciences Psychology
Identifiers
urn:nbn:se:uu:diva-136213 (URN)10.1016/j.trf.2009.11.004 (DOI)000275991000004 ()
Available from: 2010-12-10 Created: 2010-12-10 Last updated: 2017-12-11Bibliographically approved
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