Driver performance in the presence of adaptive cruise control related failures: Implications for safety analysis and fault tolerance
Paper in proceedings, 2013

This study explored how failures related to an adaptive cruise control (ACC) were handled by drivers and what the effects on safety can be. The experimental study included forty-eight subjects and was performed in a moving base driving simulator equipped with an ACC. Each subject experienced two different failures in separate scenarios. In total, the study included four different failures, i.e., Unwanted acceleration, Complete lack of deceleration, Partial lack of deceleration, and Speed limit violation. The outcome of each failure scenario has been categorized based on whether the driver managed to avoid a collision or not. For the outcomes where collisions were successfully avoided, the situations were analyzed in more detail and classified according to the strategy used by the driver. Besides showing that partial lack of deceleration caused more collisions than complete lack of deceleration (43% compared to 14% of the participants colliding), the results also indicate a preference among drivers to steer and change lane rather than to apply the brakes when faced with acceleration and deceleration failures. A trade off relationship was identified between allowing a failing ACC to stay operational and on the other hand disabling it when an error is detected. Keeping the system operational can cause confusion about the mode of the system but as the results of the study indicate it can also improve the situation by reducing impact speed.

failure model


driver behavior

adaptive cruise control


Josef Nilsson

SAFER, The Vehicle and Traffic Safety Centre

Chalmers, Signals and Systems, Systems and control, Mechatronics

Niklas Strand

SAFER, The Vehicle and Traffic Safety Centre

Chalmers, Product and Production Development, Design and Human Factors

Paolo Falcone

Chalmers, Signals and Systems, Systems and control, Mechatronics

SAFER, The Vehicle and Traffic Safety Centre

Jonny Vinter

SP Sveriges Tekniska Forskningsinstitut AB

2013 43rd Annual IEEE/IFIP Conference on Dependable Systems and Networks Workshop (DSN-W)

2325-6648 (ISSN)


Areas of Advance


Subject Categories

Interaction Technologies






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9/6/2018 1