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This thesis was written as a contribution to increasing traffic safety on rural roads.
These roads constitute themost dangerous road categorywhen the number of fatal
accidents is taken into account (Statistisches Bundesamt, 2009). Their dangerous
naturecanbeattributed to theirinherentpropertiesincombinationwith thedriving
behaviour thatoccurson them (OECD,1999).Thus,increasing trafficsafetyon these
roads requires not only taking into account the characteristics of the road and the
situationbutalsotheireffectonhumanbehaviour.
The starting point of the work was the synopsis of existing research and the
subsequent development of a psychological model for driving on rural roads. The
validationofthismodelwasconductedinthreeempiricalstepsbasedonhypotheses
derivedfromthemodel.
In the first step, theinfluence of various rural roads and perception thereof on
perceivedappropriatespeedwasanalysed.Fortysixparticipantsrated21picturesof
ruralroadsalongvariousdimensions.Fortheratings,aGermanversionoftheRoad
Environment Construct List (RECL) developed by Steyvers (Steyvers, 1993, 1998;
Steyversetal.,1994)wasused.
For a reliable assessment of the road characteristicsitwasimportant to ensure
thatthefactorstructureoftheoriginalRECLandoftheGermanversionoftheRECL
corresponded. However, this preliminary assessment yielded several differences.
Potential reasons for this finding are discussed in the text whereby the statistical
background of factor analysis is taken into account. Subsequent to the results a
decisionwasmadetolimitfurtheranalysestotwomarkeritems.Theselectionofthe
items “dangerous” and “monotonous” was based on theoretical and statistical
indicators. A regression of the ratings of these two marker items on rated speed
revealedahighlysignificantinfluence.Theexplainedvarianceof thisregressionwas
comparabletotheoriginalcalculationwhichencompassedallitems(Weller,Schlaget
al.,2008). |
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