Session 2 Naturalistic Driving: LDW Subset

Session 2 Naturalistic Driving: LDW Subset

Each participant in the first group (16 respondents annually) will drive a prescribed route using the LDW mockup vehicle. Each driving session will be part of a sub-study that aims to clarify the effects of the two independent LDW design variables (modality and activation timing) on driver performance safety indicators (e.g., frequency of lateral excursions and unintended departure events, and the magnitudes of these events). The sub-study will be conducted as a 2×3 factorial design with three LDW modalities and two LDW timing activation levels (for a total of six combinations). The LDW activation timing levels will be defined according to a previously conducted market assessment and vehicle characterization. At the halfway point, a member of the research team will switch the modality/timing combination. A remote experimenter tool will allow the experimenter to monitor the session and allow interfacing with the DAS. The total driving session duration for each participant will be approximately 4 hours, split into two sub-sessions. With orientation to the research vehicle and prescribed route, along with a 15-minute break at the halfway point, the total estimated time to complete this driving session is approximately 5 hours and 10 minutes. For up to 48 participants (16 respondents annually), this equates to a total of 248 burden hours (83 annual burden hours).