Seviye 4 otonom uzun yol çekici araçlarda ekran içerik arayüz tasarımının güvene etkisi

While the technological advancements in Level 4 autonomous drive trucks, which can drive by themselves under limited conditions, are being communicated as a way forward to increase road safety, as well as to improve working conditions and provide relaxation to long haulage drivers onboard, it is important to understand the user acceptance factors so that this technology can provide the expected benefits. This study focuses on one of the user acceptance factors, i.e., trust of the drivers. The goal is to study the effect of Human Machine Interface (HMI) screen elements in supporting trust for Level 4 autonomous drive systems for long haulage trucks. Semi-structured interviews were conducted with 12 truck drivers to understand the current status of drivers' trust, to identify drive maneuver instances where trust needs to be supported, and to develop an in-depth understanding of trust support via HMI screen elements for status and information share. Paper prototypes of HMI screen design proposals were used as probe materials during the interviews and discussed from trust build up perspective towards autonomous drive technology perspective. Interview questions and drive maneuver instances for further investigation were defined based on a preliminary trust questionnaire that was administered to 9 participants. Autonomous drive technology trust constructs that were used during the interview and in the questionnaire were defined through literature reviews in psychology and human machine interaction. Results show that main driver of trust to Level 4 autonomous trucks relies with driver experience with system competency, but it is not enough on its own. HMI screen elements are important for drivers throughout the trip. They become especially important to support feeling of reliability to autonomous system under changing weather conditions and feeling of safety during autonomous drive maneuvers through transparent status and information sharing. HMI screens can build up confidence by providing adequate solutions to watch over the road and other vehicles in autonomous driving mode. Findings from this study indicate that it is a dramatic change for long haulage truck drivers to hand over the drive to an autonomous drive system for extended durations. Considering the critical drive decisions they give during the journey for situation management, strictly following a zero-risk driving characteristic and continuously considering what could go wrong, HMI screen element designs can facilitate transparency of autonomous drive system, support trust and accelerate this transition period from current truck technology to autonomous drive trucks and assist with technology acceptance.