With semiautonomous vehicles and innovative assistance systems flooding the market, the characteristics of warning signals for automotive human-machine interfaces determine their effectiveness and usage. Within the context of advanced driver assistance systems, poorly designed warning signals have the potential to startle and distract drivers. Previous studies have investigated the effectiveness of multimodal warning signals and found that such signals reduce braking times. They are also associated with high levels of perceived urgency. This study aimed to investigate the effects of auditory, vibrotactile, and multimodal warning signals on perceived urgency, annoyance, and acceptability while varying the level of participants' mental workload and the characteristics of the warning signals (interpulse interval). Results show that, compared with other signal modalities, multimodal warning signals appear to be effective in low-workload conditions but such effect disappears as the overall level of workload increases. These results are useful for the development of an adaptive warning signal system.

How to drive drivers nuts effect of auditory, vibrotactile, and multimodal warnings on perceived urgency, annoyance, and acceptability / Biondi, Francesco; Leo, Marco; Gastaldi, Massimiliano; Rossi, Riccardo; Mulatti, Claudio. - In: TRANSPORTATION RESEARCH RECORD. - ISSN 0361-1981. - STAMPA. - 2017:(2017), pp. 34-39. [10.3141/2663-05]

How to drive drivers nuts effect of auditory, vibrotactile, and multimodal warnings on perceived urgency, annoyance, and acceptability

Mulatti, Claudio
2017-01-01

Abstract

With semiautonomous vehicles and innovative assistance systems flooding the market, the characteristics of warning signals for automotive human-machine interfaces determine their effectiveness and usage. Within the context of advanced driver assistance systems, poorly designed warning signals have the potential to startle and distract drivers. Previous studies have investigated the effectiveness of multimodal warning signals and found that such signals reduce braking times. They are also associated with high levels of perceived urgency. This study aimed to investigate the effects of auditory, vibrotactile, and multimodal warning signals on perceived urgency, annoyance, and acceptability while varying the level of participants' mental workload and the characteristics of the warning signals (interpulse interval). Results show that, compared with other signal modalities, multimodal warning signals appear to be effective in low-workload conditions but such effect disappears as the overall level of workload increases. These results are useful for the development of an adaptive warning signal system.
2017
Biondi, Francesco; Leo, Marco; Gastaldi, Massimiliano; Rossi, Riccardo; Mulatti, Claudio
How to drive drivers nuts effect of auditory, vibrotactile, and multimodal warnings on perceived urgency, annoyance, and acceptability / Biondi, Francesco; Leo, Marco; Gastaldi, Massimiliano; Rossi, Riccardo; Mulatti, Claudio. - In: TRANSPORTATION RESEARCH RECORD. - ISSN 0361-1981. - STAMPA. - 2017:(2017), pp. 34-39. [10.3141/2663-05]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/250419
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