論文 - 大門　樹

Trust in Driverless Service Mobility: Communication Methods for Pedestrian Crossing on Residential Narrow Roads

Lee J., Daimon T.

16th International Conference on Automotive User Interfaces and Interactive Vehicular Applications, AutomotiveUI 2024 - Adjunct Conference Proceedings    78 - 81 2024年09月

　概要を見る

This study explored communication designs for driverless automated service vehicles (ASVs) and pedestrians' trust and perceived safety when pedestrians cross narrow roads in residential areas. Forty participants carried out VR experiments that simulated interactions between implicit (vehicle behavior) and explicit communications (text-based external human-machine interfaces (eHMI)) of two ASVs types (bus and golf cart) in residential areas. Results indicated that pedestrians were more likely to trust the bus-type ASV more when it stopped further away compared to decelerating relatively late. Pedestrians' perception of safety varied depending on the type of ASV, with the golf cart type being perceived as safer than the bus type. Further, pedestrians exhibited greater trust when the ASV did not display any messages. However, text messages indicating the ASV's status, such as”In Automated Driving,” improved their perception of safety. This highlights the need for effective communication methods to enhance road user attitudes towards ASVs.

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外向けHMIと走行位置を利用した低速自動運転サービスカーの意図伝達と後続車ドライバーの認識

吉田 眞紀, 大門 樹, 對間 昌宏

自動車技術会論文集 （公益社団法人 自動車技術会）  55 （ 3 ） 571 - 578 2024年05月

研究論文（学術雑誌）, 共著, 責任著者, 査読有り

Not Always Good: Mitigating Pedestrians’ Less Careful Crossing Behavior by External Human-Machine Interfaces on Automated Vehicles

Lee J., Daimon T.

International Journal of Human-Computer Interaction 2024年

共著,  ISSN  10447318

　概要を見る

An external human-machine interface (eHMI) is a novel tool that facilitates efficient interactions between pedestrians and automated vehicles (AVs). However, as pedestrians become accustomed to communicating with AV through eHMI, there is a risk of exhibiting less cautious behavior, which can increase the likelihood of accidents. This study aimed to examine the effects of methods to mitigate the side effects of communication with AV through an eHMI. A total of 132 participants participated in a Virtual Reality experiment to investigate the existence of negative effects and to explore mitigation methods. We designed five experimental conditions to manipulate the tone of text messages (Allocentric: “After you,” Egocentric: “I’ll stop”) and test the effect of mitigation methods, such as hiding the text messages on the eHMI when the AV is stopped (No eHMI, eHMI-A, eHMI-E, HeHMI-A, HeHMI-E). The results revealed that pedestrians were more likely to exhibit less careful behavior in the eHMI condition than in the No eHMI condition. The disappearance of text messages on the eHMI prompted pedestrian attention allocation toward traffic situations, leading to a reduction in accident risk. In particular, the mitigation method was most effective for safe crossing when pedestrians were continuously exposed to the eHMI, presenting an egocentric message. Our findings contribute to the design of text-based eHMIs for pedestrian decision-making when crossing and enhancing traffic safety.

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Communication Strategies for Effective Interaction with Pedestrians and Automated Service Vehicles in Japanese Parking Areas

Jieun Lee, Tatsuru Daimon

International Journal of Human-Computer Interaction （TAYLOR & FRANCIS INC）  2023年12月

研究論文（学術雑誌）, 共著, 最終著者, 査読有り,  ISSN  1044-7318

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ジレンマゾーンのドライバー行動を改善するための信号通過支援の情報コンテンツに関する研究－信号交差点の通過の不確実を含めることの効果－

山口 諒, 大門 樹, 岩岡 浩一郎, 朝田 將, 織田 利彦

自動車技術会論文集 （公益社団法人 自動車技術会）  54 （ 2 ） 410 - 416 2023年03月

研究論文（学術雑誌）, 共著, 責任著者, 査読有り

自動運転から手動運転への運転引継ぎに対する先読み情報の効果－ 道路交通情報に基づく先読み情報提供に伴う前方注意を持続するHMIの検討 －

水田 大雅, 角 広志郎, 大門 樹, 水野 伸洋, 土井 浩史, 吉澤 顕

自動車技術会論文集 （公益社団法人 自動車技術会）  54 （ 2 ） 436 - 442 2023年03月

研究論文（学術雑誌）, 共著, 責任著者, 査読有り

Differences in Pedestrian Behavior at Crosswalk between Communicating with Conventional Vehicle and Automated Vehicle in Real Traffic Environment

Masahiro TAIMA, Tatsuru DAIMON

Safety 9 （ 1 ）  2023年01月

研究論文（学術雑誌）, 共著, 査読有り

Unsafe and inefficient communication between automated buses and road users on public roads in Japan

Taima M., Daimon T.

1st International Conference in Advanced Innovation on Smart City, ICAISC 2023 - Proceedings （1st International Conference in Advanced Innovation on Smart City, ICAISC 2023 - Proceedings）  2023年

　概要を見る

For an appropriate communication design between an automated vehicle and road users, we need to understand unsafe and inefficient communications in public road environments. This study investigated unsafe and inefficient communications between automated buses and road users and analyzed the underlying factors. We collected video data from a camera attached to a bus for 233 days in a field operation test (FOT) at seven locations in Japan and observed 22,199 communications between the automated bus and road users. Consequently, we observed several types of unsafe and inefficient communications. We found that specific automated bus characteristics, such as absence of driver's action, unfamiliar appearance, and fixed trajectory, caused these unsafe and inefficient communications in crossing and overtaking scenarios. Our study indicates the necessity of some improvements for implicit/explicit cues from an automated bus, along with the education of residents and visitors.

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Exploring Assistance Methods for Communication between Pedestrians and Automated Vehicles: A Need-Driven Study in Japanese Depopulated Areas

Lee J., Daimon T., Kitazaki S.

Proceedings of the 2022 IEEE International Conference on Human-Machine Systems, ICHMS 2022 （Proceedings of the 2022 IEEE International Conference on Human-Machine Systems, ICHMS 2022）  2022年11月

研究論文（国際会議プロシーディングス）, 共著, 査読有り

　概要を見る

The introduction of driving automation as a mobility service has been expected to shape new types of road communication between vulnerable road users and automated vehicles. Given that road users' lack of knowledge about automated vehicles in depopulated rural areas, it is important to design conversative strategies leading effective pedestrian-automated vehicle communication. The current study investigates impacts of communication methods assisting pedestrian avoidance from an approaching automated driving golf cart from behind. Three communication methods (Baseline, text-based external human-machine interface, road marking) and two environments (narrow road, parking area) were simulated in virtual reality experiments. Results found that pedestrians found it useful and effective when the automated cart provided a text message via the external human-machine interface, with giving way to the automated cart. As the blue marking on the road indicated the driving route of the automated cart, the road marking also had a potential for leading pedestrians to move from the road. Empirical findings provide practical recommendations for the design of communication strategies leading pedestrian-automated vehicle interaction in depopulated areas.

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自動運転中の動画提供におけるインタフェースモダリティが自動運転から手動運転への運転引継ぎに及ぼす影響

水田 大雅, 久我 知希, 大門 樹, 水野 伸洋, 吉澤 顕

自動車技術会論文集 （公益社団法人 自動車技術会）  53 （ 3 ） 554 - 559 2022年05月

研究論文（学術雑誌）, 共著, 査読有り

Time to Arrival as Predictor for Uncertainty and Cooperative Driving Decisions in Highly Automated Driving

Miller L., Leitner J., Kraus J., Lee J., Daimon T., Kitazaki S., Baumann M.

IEEE Intelligent Vehicles Symposium, Proceedings （IEEE Intelligent Vehicles Symposium, Proceedings）  2022-June   1048 - 1053 2022年

研究論文（国際会議プロシーディングス）, 査読有り

　概要を見る

Due to the technical advances of automated vehicles (AVs), new uncertainties for human road users arise. To overcome these uncertainties, driving strategies of AVs might be aligned to human interaction styles. In vehicle-vehicle interactions, driving behavior is informed by remaining time gaps between vehicles. This video-based experiment investigated the influence of gap sizes and the measurement method on driving decisions. N=32 participants experienced a highly automated drive in which their AV approached narrow passages. The time to arrival (TTA) of the oncoming traffic was varied. Participants had to decide to drive first or second, indicate their decision certainty, and the situation's criticality. The videos were presented in ascending, descending, and random order. Moreover, participants adjusted the TTA at which they would drive first and second. The results indicated a higher probability of driving first and lower criticality with increasing TTA. Decision certainty was lowest around the 50% threshold, while longer and shorter TTAs resulted in higher certainty. Results differed between the methods. The findings provide guidance for the design of automated systems to mimic human driving behavior.

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Pedestrian Carelessness toward Traffic Environment Due to External Human-Machine Interfaces of Automated Vehicles

TATSURU DAIMON, MASAHIRO TAIMA, SATOSHI KITAZAKI

Journal of Traffic and Logistics Engineering 9 （ 2 ） 42 - 47 2021年11月

研究論文（学術雑誌）, 共著, 査読有り,  ISSN  2301-3680

Stopping Position Matters: Drawing A Better Communication between Pedestrian and Driverless Automated Vehicles on Narrow Roads

JUN SOSHIRODA, JIEUN LEE, TATSURU DAIMON, SATOSHI KITAZAKI

Proceedings of the 65th Annual Meeting of HFES （Human Factors and Ergonomics Society）  2021年10月

研究論文（国際会議プロシーディングス）, 共著, 査読有り

Variable-Drift Diffusion Models of Pedestrian Road-Crossing Decisions

JAMI PEKKANEN, OSCAR TERENCE GILES, YEE MUN LEE, RUTH MADIGAN, TATSURU DAIMON, NATASHA MERAT, GUSTAV MARKKULA

Computational Brain & Behavior （Springer）  2021年10月

研究論文（学術雑誌）, 共著, 査読有り

Interaction between low-speed automated vehicles and other road users in field operational test in Japan

對間 昌宏, 大門 樹

Proceedings of Congress of the International Ergonomics Association (IEA 2021) （The International Ergonomics Association (IEA 2021)）  2021年06月

研究論文（学術雑誌）, 共著, 査読有り

　概要を見る

To explore issues pertaining to the interactions between low-speed automated vehicles (AVs) and other road users, we analyzed video data recorded during field operational tests using cameras attached to the AVs.

Negative Effect of External Human-Machine Interfaces in Automated Vehicles on Pedestrian Crossing Behaviour: A Virtual Reality Experiment

イ ジウン, 大門 樹, 北﨑 智之

Proceedings of Congress of the International Ergonomics Association (IEA 2021) （The International Ergonomics Association (IEA 2021)）  221   718 - 725 2021年06月

研究論文（国際会議プロシーディングス）, 共著, 査読有り

　概要を見る

Communication between pedestrians and automated vehicles is playing a key role in enhancing the safety of future traffic environment. The current study attempted to suggest new insights into designing external human-machine interfaces (eHMIs) in automated vehicles for traffic safety as examines negative effects of the eHMI on pedestrian crossing behaviour in a situation where an automated vehicle yields to pedestrian. Virtual Reality systems simulated three experimental conditions: baseline (no eHMI), showing “After you” and “I’ll stop” via eHMI on an automated vehicle in residential areas. The experiment using human participants resulted that conveying information via eHMI led pedestrians to do less careful exploratory behaviour toward other traffic. The result also showed the greater number of traffic collisions when the eHMI showed information compared to non-eHMI condition. The findings of this study are also being used to help how to design the eHMI on automated vehicles in shared spaces.

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自動運転から手動運転への段階解除過程におけるドライバー支援のための情報コンテンツに関する基礎的研究 －情報提供がACC解除後の運転行動と視認行動に与える影響－

久我 知希, 林 百花, 大門 樹, 水野 伸洋, 吉澤 顕

自動車技術会論文集 （公益社団法人 自動車技術会）  51 （ 3 ） 466 - 472 2020年05月

研究論文（学術雑誌）, 共著, 査読有り

3Dヘッドアップディスプレイ上の表示コンテンツと実環境との位置関係がドライバーの違和感に与える影響に関する基礎的研究

松橋 和紀, 田中 直樹, 大門 樹, 笠澄 研一, 森 俊也

自動車技術会論文集 （公益社団法人 自動車技術会）  51 （ 2 ） 340 - 346 2020年03月

研究論文（学術雑誌）, 共著, 査読有り

At the Zebra Crossing: Modelling Complex Decision Processes with Variable-Drift Diffusion Models

OSCAR GILES, GUSTAV MARKKULA, JAMI PEKKANEN, NAOKI YOKOTA, NAOTO MATSUNAGA, NATASHA MERAT, DAIMON TATSURU

Proceedings of the 41st Annual Meeting of the Cognitive Science Society (CogSci 2019) （The Cognitive Science Society）     366 - 372 2019年07月

研究論文（国際会議プロシーディングス）, 共著, 査読有り

　概要を見る

To explore issues pertaining to the interactions between low-speed automated vehicles (AVs) and other road users, we analyzed video data recorded during field operational tests using cameras attached to the AVs.

ドライバーの意思決定による自動運転から手動運転への段階的解除方法に関する研究 －LKAとACCの解除間隔時間に基づく解除直後の運転操作と視認行動の比較－

佐生 優哉, 遠藤 智季, 大門 樹, 水野 伸洋, 吉澤 顕

自動車技術会論文集 （公益社団法人 自動車技術会）  50 （ 2 ） 492 - 498 2019年03月

研究論文（学術雑誌）, 共著, 査読有り