How we make Data

Vehicle trajectory database generated by image sensing technology

The vehicle trajectory database is intended to realize a more safe, secure and comfortable drive for all highway users. The data is made targeting congestion bottlenecks using image sensing technology. The data is obtained by cameras installed on some of the light poles of the Hanshin Expressway to observe all vehicles in target sections at a 0.1 second interval. On top of that, other data such as car length and other vehicle attributes together with location data at 0.1 second intervals and corresponding road surface information (longitudinal and cross slopes, road curvature, etc.) are combined.
The data covers roughly 100% of each vehicle’s trajectory for all vehicles in the target sections. Thus, the trajectories for each vehicle are generally continuous in the target section.

Generating processes of the vehicle trajectory database