How do collision avoidance systems affect driver behavior and trust?

2 Challenges of CAS

However, CAS also pose some challenges for drivers, such as creating overreliance, complacency, or confusion. CAS can create overreliance or complacency when drivers rely too much on the system and reduce their attention or involvement in driving. This can lead to loss of situational awareness, delayed reaction, or loss of control. For example, drivers who use ACC or LKA may become less vigilant or attentive to the traffic environment, or may not be ready to resume manual control when needed. CAS can also create confusion or misunderstanding when drivers do not know how the system works, what its limitations are, or how to interact with it. This can lead to frustration, distrust, or misuse of the system. For example, drivers who do not understand the logic or behavior of the system may ignore or override its warnings or interventions, or may expect it to perform beyond its capabilities.

3 Factors affecting driver behavior and trust

Driver behavior and trust in CAS are influenced by various factors, such as individual characteristics, system design, and environmental conditions. Individual characteristics include drivers' personality, attitudes, expectations, experience, and skills. For example, drivers who are more risk-averse, confident, or familiar with the system may be more likely to trust and use CAS than drivers who are more risk-seeking, anxious, or novice. System design includes factors such as usability, reliability, accuracy, feedback, and transparency. For example, drivers may trust and use CAS more if the system is easy to operate, consistent, precise, informative, and explainable. Environmental conditions include factors such as traffic density, road type, weather, and lighting. For example, drivers may trust and use CAS more in situations where the driving task is more difficult, demanding, or hazardous.

4 How to balance driver behavior and trust

Balancing driver behavior and trust in CAS is essential for ensuring optimal safety and performance. Drivers need to be aware of the benefits and limitations of CAS, and use them as a complement rather than a substitute for their own skills and judgment. Drivers also need to monitor the system and the environment, and be ready to intervene or take over when necessary. CAS need to be designed to support drivers' needs and preferences, and provide clear and timely feedback and guidance. CAS also need to be adaptable to different drivers, situations, and contexts, and provide the appropriate level of automation and intervention.