Supplementary data for the paper Melman, T., Weijerman, M., De Winter, J. C. F., & Abbink, D. A. (in press). Should steering settings be changed by the driver or by the vehicle itself? Human Factors.

* read_and_process.m	MATLAB script that produces all figures and analyses in the paper.
* Simulatordata.mat	MAT-file with participants' raw and filtered simulator data for: time, x- and y-position, travelled distance, steering wheel angle, gain, and adaptation moment.
* Questionnaires.mat	MAT-file with participants' subjective effort per segment, subjective workload as measured by NASA-TLX and overall steering system ranking.

Road data files
* CURVATURE.mat		MAT-file with road curvature.
* DENSITY.mat		MAT-file with data on the vehicle positions (pertaining the overtaking segment)
* ROAD.mat		MAT-file with x,y coordinates for boundary left-lane, center left-lane, lane-crossing, center right-lane, and boundary right-lane.
* ROAD_DISTANCE.mat	MAT-file with travelled distance.

* Questionnaires.pdf	Pre-post, post-trial, and post-experiment questionnaires.
* Questionnaires.xlsx	Excel file with data from the pre-post, post-trial, and post-experiment questionnaires.

* Table1.xlsx		Means (M), standard deviations (SD), and effect sizes (dz) per dependent measure and experimental condition.
* TableS1.xlsx		Means (M), standard deviations (SD), and effect sizes (dz) per dependent measure and order of presentation (1 = first trial, 2 = second trial, 3 = third trial, 4 = fourth trial).

* demo.mp4		Video showing a demonstration of the experiment.
