Evaluation of Visual Alerts on a Head-Up Display Considering Driving Experience

Hisato Fukuda (Gunma University)･Toshihiko Kozai･Tsutomu Iwase (Gunma University/SUBARU)･Ikuo Goto･Takeshi Torii･Tsukasa Mikuni (SUBARU)

The effects of visual alerts presented on a head-up display on drivers were evaluated. In particular, this study focused on driving experience to examine whether the effectiveness of these visual alerts varies at different levels of driver experience. A sensory evaluation experiment was conducted using a VR-based driving simulator to assess the effects of these alerts on participant groups with varying levels of driving experience. The experimental results revealed significant differences in both sensory evaluations and vehicle control performance across different presentation conditions and levels of driving experience.

Outdoor Evaluation Experiment Under Daytime and Nighttime Conditions on Perception of Automated Driving System Marker Lamps (Third Report)
-When Marker Lamps Are Installed Near Rear Signal Lamps-

Akihiro Abe･Yoko Kato･Tatsuya Iizuka･Michiaki Sekine･Yoshiro Aoki (NALTEC)

At WP.29, requirements for an "Automated Driving System (ADS) Marker Lamp," which indicates the status of automated driving, are currently under discussion. In this study, outdoor experiments were conducted under both daytime and nighttime conditions using an evaluation lamp with blue-green chromaticity developed based on the regulatory proposal submitted to GRE in 2025. The study focused on lighting conditions such as luminous intensity and luminous area to investigate the visual characteristics of the evaluation lamp and other vehicle signaling lamps, such as direction indicators and brake lamps.

Requirements For Easily Recognizable Icon Symbols

Yuka Miyashita (Nissan Motor)

Icon symbols on car switches and displays serve to communicate operation methods and meanings to the user. While many are easily understood without explanation, in order to design clearer icons for increasingly complex car functions, we considered them from a philosophical perspective, drawing inspiration from signs on public transportation and displays on home appliances and other devices.

Proposal of a quantitative evaluation method for response characteristics to visual and auditory stimuli in motorcycle forward collision warning HMIs

Takato Yamamoto･Keisuke Suzuki (Kagawa University)･Naotoshi Takemura･Joohyeong Lee･Tomoki Minami (Honda R&D)

This study proposes an evaluation methodology for motorcycle forward collision warning (FCW) HMIs that accounts for the unique riding environment. By replacing conventional driving simulator assessments with psychological experimental methods, we utilized a mental rotation task to apply individualized optimal cognitive loads. Under tightly controlled presentation conditions, we quantitatively measured 30 participants' reaction times to visual and auditory warnings across various downward viewing angles. The experiment successfully acquired robust data sufficient for statistical comparisons, yielding valid results consistent with existing knowledge. Ultimately, this establishes a methodological guideline for quantitatively evaluating motorcycle HMI cognitive characteristics.

Design Study of a Portable Driving Simulator through Co-design with Older Drivers

Linjing Jiang･Yuki Yoshihara･Nihan Karatas･Asuka Harada･Hitoshi Kanamori･Takahiro Tanaka (Nagoya University)

This study involved older drivers experiencing four types of portable driving simulators: a VR-based system with physical pedals, a physical-pedal system, a digital-pedal system, and a touch-operated system. Through group discussions, the advantages and limitations of each approach were identified. The redesign directions were then organized from the perspective of older drivers, considering the balance among acceptability, easy of operation, physical burden, and portability.