Eye movement directory

Directory content: This directory contains 20 .CSV files including 187 parameters related to eye movements (recorded at 120 Hz) and cameras calibrations for each driver (ID_Number_EyeMovementSignals). From the original 21 files, due to log system failures during the recording session, data from one driver (driver ID #69) are missing. All files were pre-processed in two steps to ensure the correct sampling rate: we (i) removed lines with timestamps repetitions, and (ii) resampled to 120 Hz using regularly spaced and linear interpolation. This directory also includes a .CSV file reporting data description (Legend_DataEyeMovement) and a .SEW file (3DWorldModelDescription; readable as .txt file) reporting the 3D World Model definition.

Method and instrument: We collected drivers’ eye movements through the Smart Eye PRO system remote eye tracker (120 Hz; v9.0; Smart Eye AB, Gothenburg, Sweden). The device consists of four IR cameras (2 central cameras [12 mm lens] and 2 lateral cameras [8 mm lens]) placed at ∼ 115 cm of distance from the driver’s face (angled from below ∼ 45°), covering a total field view of ∼ 180°. Multiple sources of IR lights (three for each lateral camera) were employed to enhance the driver’s face contrast. For each driver, we adjusted the system (camera’s direction, brightness [aperture], and focus) and we then performed a 12-point gaze calibration.