High Frequency Floating Car Data was collected to analyse circa 1 million individual speed profiles on 153 Dutch freeway curves. By defining the positions where the acceleration approaches 0 m/s2 before and after a curve starts, the positions when the driver started and stopped decelerating upon curve entry were defined. These positions and speeds are put in a database, combined with detailed reconstruction of the curves and their surroundings, as well as three dimensional sight distance analysis. This aggregated database is shared here, along a file explaining the different variables in the database.
More backgrounds can be read in:
Vos, J., Farah, H., & Hagenzieker, M. (2021). Speed behaviour upon approaching freeway curves. Accident Analysis & Prevention, 159, 106276. doi: https://doi.org/10.1016/j.aap.2021.106276
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