Print Email Facebook Twitter Supporting driver headway choice: The effects of discrete headway feedback when following headway instructions Title Supporting driver headway choice: The effects of discrete headway feedback when following headway instructions Author Risto, M. Martens, M.H. Publication year 2014 Abstract With specific headway instructions drivers are not able to attain the exact headways as instructed. In this study, the effects of discrete headway feedback (and the direction of headway adjustment) on headway accuracy for drivers carrying out time headway instructions were assessed experimentally. Two groups of each 10 participants (one receiving headway feedback; one control) carried out headway instructions in a driving simulator ; increasing and decreasing their headway to a target headway of 2s at speeds of 50, 80, and 100km/h. The difference between the instructed and chosen headway was a measure for headway accuracy. The feedback group heard a sound signal at the moment that they crossed the distance of the instructed headway. Unsupported participants showed no significant difference in headway accuracy when increasing or decreasing headways. Discrete headway feedback had varying effects on headway choice accuracy. When participants decreased their headway, feedback led to higher accuracy. When increasing their headway, feedback led to a lower accuracy, compared to no headway feedback. Support did not affect driver's performance in maintaining the chosen headway. The present results suggest that (a) in its current form discrete headway feedback is not sufficient to improve the overall accuracy of chosen headways when carrying out headway instructions; (b) the effect of discrete headway feedback depends on the direction of headway adjustment. © 2014 Elsevier Ltd and The Ergonomics Society. Subject Human PerformancesPCS - Perceptual and Cognitive SystemsELSS - Earth, Life and Social SciencesMobilityHeadway choice accuracyHeadway feedbackHeadway instructionsPhysical therapyDriver's performanceDriving simulatorFollowing headwayHeadway choice accuracyHeadway instructionsOverall accuraciesSound signalTime headwayErgonomicsaccuracyadultarticlecontrolled studydriving abilityfeedback systemfemalehumanhuman experimentmalenormal humansimulationtask performancevelocity To reference this document use: http://resolver.tudelft.nl/uuid:17606c4c-607f-4e2b-b2d2-152721e7c404 DOI https://doi.org/10.1016/j.apergo.2014.02.003 TNO identifier 503225 Publisher Elsevier Ltd ISSN 1872-9126 Source Applied Ergonomics, 45 (4), 1167-1173 Document type article Files To receive the publication files, please send an e-mail request to TNO Library.