半自動運転の性能向上につながる「対話型」ステアリングホイール(Steering wheel communicates for better semi-autonomous driving performance)

2026-10-01 ミシガン大学

米ミシガン大学の研究者らは、半自動運転車と人間のドライバーが協調する際、ステアリングホイールを介して車両の「意図」や運転状態を伝える新しいヒューマン・マシン・インターフェース(HMI)を開発した。従来の視覚・聴覚による警告ではなく、ハンドルの回転抵抗や振動などの触覚情報を利用し、車両が自動運転制御を行っている状況や、ドライバーに操作を引き継ぐ必要性を直感的に伝達する。実験では、こうした触覚フィードバックにより、ドライバーが車両の挙動をより正確に理解し、半自動運転システムとの協調性能を向上できることが示された。研究は、自動運転技術の性能だけでなく、人間とAIの相互理解を設計することが安全な運転支援に重要であることを示しており、将来のADASや自動運転車のHMI設計への応用が期待される。

半自動運転の性能向上につながる「対話型」ステアリングホイール(Steering wheel communicates for better semi-autonomous driving performance)
Hannah Baez runs system checks during a simulation test of a haptic steering wheel designed to improve communication between vehicle automation and the human driver. Image credit: Brenda Ahearn, Michigan Engineering

<関連情報>

触覚による共有計画と制御:触覚交渉インターフェースを介した人間と自律走行車のチームにおける将来の行動の調整を可能にする Haptic Shared Planning and Control: Enabling Coordination of Future Actions in Human-Autonomous Vehicle Teams Through a Haptic Negotiation Interface

Hannah Báez, Haochi Pan, […], and R. Brent Gillespie
The Human Factors and Ergonomics Society  Published:September 24, 2026
DOI:https://doi.org/10.1177/00187208261483656

Abstract

Objective
We examine how human-automation shared steering control combined with a haptic shape-changing interface for communicating and negotiating future intent affects driving performance and trust recovery.

Background
Steering fights in haptic shared control can negatively impact driving performance. Existing solutions do not feature automation explicitly communicating its intent nor supporting intent negotiation with the driver. Trust recovery after faults is also expected to improve with explicit intent communication.

Method
Thirty participants took part in a continuous driving task consisting of 39 turns at intersections in which the pre-planned turn direction either matched or differed. Haptic communication of intent between driver and automation was metered under three conditions: From automation to driver (One-Way), in both directions (Two-Way), or not available (No-Way). Road obstacles were present at certain intersections to test handling of contingencies and faults. Automation faults were restricted to a second experimental period, leaving a third period to examine trust before and after a period of faults.

Results
Drivers in Two-Way communication displayed significantly improved driving performance when turn intents did not match. After the period of automation faults, drivers in Two-Way communication displayed significantly better overall trust recovery than drivers in One-Way or No-Way communication.

Conclusion
Negotiation is a viable means to avoid driver overrides and leads to improved trust recovery. Negotiation through a haptic interface should be considered an effective strategy to ensure function and cohesion in human-automation teams.

Application
Human-autonomy planning and team building.

0108交通物流機械及び建設機械
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