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Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/659

Title: Taking the load off: Investigations of how adaptive cruise control affects mental workload
Authors: Young, M S
Stanton, N A
Keywords: Adaptive cruise control
Driving simulator
Mental workload
Vehicle automation
Publication Date: 2004
Publisher: Taylor and Francis
Citation: Ergonomics 47 (9): 1014-1035, Jul 2004
Abstract: It has been posited that Adaptive Cruise Control (ACC) represents a new generation of vehicle automation, in that it has the potential to relieve drivers of mental as well as physical workload. The results of previous research however, have raised some confusing issues about the specific effects of Adaptive Cruise Control (ACC) on driver mental workload (MWL)--some studies report reduced MWL compared to manual driving, while others find no effect. Two hypotheses are proposed in an attempt to explain these discrepancies: (a) that any potential MWL reductions due to ACC could be masked by the overriding influence of steering demand; or (b) that the tasks designed in some experiments do not exploit the adaptive nature of the ACC system, therefore precluding any potential benefits. Two related experiments were designed to test these hypotheses. It was found that the main reason for the discrepant findings was the nature of the driving task chosen--constant-speed tasks do not realise the mental workload benefits of ACC. Future researchers using ACC devices are advised to use variable-speed tasks to ensure that all aspects of device functionality are covered.
URI: http://bura.brunel.ac.uk/handle/2438/659
DOI: http://dx.doi.org/10.1080/00140130410001686348
Appears in Collections:Design
Ergonomics
Psychology
Dept of Design Research Papers

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