研究論文 Assessment of Effectiveness of Passenger Seatbelt Reminder on Using Belt Rate - Toward Introducing Its Assessment in the New Car Assessm

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1 研究論文 Assessment of Effectiveness of Passenger Seatbelt Reminder on Using Belt Rate - Toward Introducing Its Assessment in the New Car Assessment - Motoyuki Akamatsu Shinji Shimaoka Since use of seatbelt is critical for passenger safety in crash, installation of seat belt reminder (SBR) for passengers is going to be one of items in the Japanese New Car Assessment Protocol. This paper describes establishment of the assessment procedure of the effectiveness of SBR on the passenger belt use. We proposed the model of how SBR works in which there were two pathways, one directory affected on the passenger to induce a voluntary belt use and the other facilitated the driver to request the passenger to use. Based on this model, we designed a series of experiment where the participants assessed the probability of requesting the belt use as a driver, the probability of the voluntary use as a passenger and the probability of belt use by the request from the driver. We examined various designs of SBRs. The results showed that the effectiveness of SBR could be classified as the followings. The SBRs given to either only the driver or to only passenger visually, the SBRs that are the same visual condition but adding the auditory signal, the SBRs given both the driver and passenger visually, the SBRs given both the driver and the passenger both visual and auditory signals. The assessment score can be decided based on the above characteristics of SBR. KEY WORDS: safety, occupant safety, seat belt reminder, human interface, test/evaluation (C1) % 93.2% (3) 33.2% Vol.45,No.1,January

2 passenger who do not use belt voluntarily! Perceived q passengers requested to by driver! use from driver (q)! Presenting SBR! Perceived by passenger! 1-p p passengers use belt by driver s request (a)! passengers who use belt voluntarily! Fig 1. How SBR work for the passenger Total effect of SBR on passenger! 122 自動車技術会論文集

3 p (1-p) q (1-p)*q a (1-p)*q*a p+(1-p)*q*a p,q,a p,q,a Vol.45,No.1,January

4 p q Ratio of passenger s voluntary belt use Ratio of driver s request of belt use to passenger 100" 80" 60" 40" 20" 0" Without SBR Seatback of sedan Mirror for minivan SBR Voice Beep Auditory SBR Melody and Auditory SBR Fig 2. Rate of passenger s voluntary belt use (p) 100" 80" 60" 40" 20" 0" Without SBR Mirror for minivan SBR Melody and Auditory SBR Back seat of sedan 2 nd row of minivan minivan Backseat of sedan 2 nd row of minivan minivan Fig 3. Rate of driver s request for belt use to passenger (q) Total ratio of belt use by passenger 100" 80" 60" 40" 20" Room mirror SBR from 3 rd row of minivan Room mirror SBR from 3 rd row of minivan Melody Back seat of sedan 2 nd row of minivan minivan 0" Without SBR SBR SBR SBR SBR SBR V:D V:P V:D&P V:D+A V:D&P+A SBR V:D = presentation to driver only SBR V:P = presentation to passenger only SBR V:D&P = presentation to both driver and passenger SBR V:D+A = presentation to driver with auditory presentation SBR V:D&P+A = presentation to both driver and passenger with auditory presentation Fig 4. Total ratio of belt use by passenger 124 自動車技術会論文集

5 Table 1. Effect of design of SBR on ratio of belt use presentation SBR design for driver SBR design for passenger Meter cluster, icon, Roof, icon, blink, blink, without sound +7 without sound presentation +15 (basic design) presentation (basic design) Seat back +10 Position Center console -5 Position Center console +5 Expression Japanese +1Expression Japanese -1 Blink Constant blink +3 Blink Constant blink -1 condition Change blink rate +1 condition Change blink rate -1 Auditory presentation Intermittent Change intermittent rate Melody Voice SBR 90% 1% SBR SBR SBR Vol.45,No.1,January

6 126 自動車技術会論文集

Microsoft Word - KSAE06-S0262.doc

Microsoft Word - KSAE06-S0262.doc Stereo Vision based Forward Collision Warning and Avoidance System Yunhee LeeByungjoo KimHogi JungPaljoo Yoon Central R&D Center, MANDO Corporation, 413-5, Gomae-Ri, Gibeung-Eub, Youngin-Si, Kyonggi-Do,