In this study, we investigated and analyzed the impact of changes in driving speed and inter-vehicle distance on users’ perceived tension during autonomous vehicle operation. To this end, a survey experiment was conducted for both urban roads and highways. The results show that the greatest changes in perceived tension occurred in the range of 50–70 Km/h and 50–70 m following distance on urban roads, and in the range of 80–100 Km/he and 60–80 m following distance on highways. Furthermore, modeling user behavioral responses to perceived tension based on changes in speed and following distance revealed that linear models best described the relationship for speed on both urban roads and highways. For the following distance, a quadratic model was the most suitable for urban roads, whereas a logarithmic model best fit the highway data. These findings are expected to contribute to practical operational guidelines for autonomous vehicles by alleviating users’ psychological discomfort and enhancing public acceptance. Future research will extend this study using a driving simulator to examine user responses in more realistic driving environments.

ABSTRACT
1. 서론
2. 선행연구 고찰
3. 설문 계획 : 자율주행 자동차 이용자의 차량 주행긴장감 인식 행동 조사
4. 자율주행 자동차 이용자의 차량 주행 긴장감 인식행동 분석
    4.1. 실험자 특성 분석
    4.2. 주행속도 및 차간거리에 따른 긴장감 인식 행동분석
    4.3. 주행속도와 차간거리의 상호변화에 따른 긴장감인식 행동 분석
5. 자율주행 자동차 이용자의 차량 주행 긴장감 인식행동 모형화
    5.1. 주행속도 및 차간거리에 따른 긴장감 인식 행동 모형
    5.2. 주행속도와 차간거리의 상호변화에 따른 긴장감인식 행동 모형
6. 결론
감사의 글
REFERENCES

• 김도현(원광대학교 창의공과대학 건설환경공학과 대학원) | Kim DoHyeon Corresponding author
• 남궁문(원광대학교 창의공과대학 건설환경공학과 교수) | Namgung Moon
• 이길주(원광대학교 창의공과대학 건설환경공학과 대학원) | Lee Giljoo