Does the AR-HUD system affect driving behaviour? An eye-tracking experiment study

In recent years, the continuous development of in-vehicle information systems (IVIS) has greatly enriched the driving experience, while also occupying the driver's cognitive resources to varying degrees, causing driving distraction. Therefore, studying the influence of the AR-HUD (Augmented Reality Head-up Display, AR-HUD) system on driving behaviour is of great significance for the in-vehicle information system to manage the complexity of information and enhance driving safety. This experiment applied five typical risky driving scenarios under two lighting conditions (daytime and night), as stimulus materials. The effects of eye movement behaviour and risk reaction time indicators during driving were comprehensively analysed. The experiment results showed that the AR-HUD system can significantly improve the subjects' attention to risky AOIs (Area of Interest, AOI) in night driving situations, as well as reduce the difficulty of processing information in risky driving scenarios, thus reducing cognitive load; In terms of reaction time, the AR-HUD system can significantly reduce the driver's perception time for risky driving scenarios, thus responding to risky situations more quickly. The experiment conclusions verified the role of AR-HUD technology in improving driving safety and driving behaviour, and provide a new direction for the future development of in-vehicle information systems.