Venice – Final analysis

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You probably remember the recording in Venice: Blimp recording in Venice, Recording in Venice in detail. We have obtained permission to share some of the results, so we can show you what can DataFromSky do for you, too!

Speed profile

The speed profiles for both areas were extracted.

At a glance, one can see what speeds belong to which path through the crossroads. It is also plainly visible which trajectories belong to slow and which to speedy drivers. In this case, the total area captured and analyzed is too small to show bigger changes in speeds, though.

Speed profile, Caposile roundabout
Speed profile, Portegrandi T-intersection

Area coverage

Density of trajectories corresponds to area usage. One can thus estimate how much of the road’s width is actually used by passing vehicles, and where the wear of roadway is most intensive.

Area coverage, Caposile roundabout
Area coverage, Portegrandi T-intersection

Conflict areas

DataFromSky can detect situations where vehicles become too close, or have to slow down to let each other pass. This is a visualization of these events’ spatial distribution. You can easily see that there is a single point for the T-intersection and estimate from the pattern at roundabout that its southern leg is far less used.

Conflict areas, Caposile roundabout
Conflict areas, Portegrandi T-intersection


Deflection and radius analysis

Deflection angle and radius analysis, Caposile roundabout

Deflection angle denotes the part of road which requires circular movement. Radius describes the size of that circle. Both can relate either to the shape of road, or actual trajectory used by vehicles.

DataFromSky provides real vehicle trajectories, so actual deflection angles and radii can be measured. These depend on the combination of entry and exit points, so it’s natural to split the trajectories into groups. Again, with DataFromSky you are not left wishing for features.

Road design validation

Road design validation, Portegrandi T-intersection

Last but not least, the trajectory data from DataFromSky is exactly what you need to validate design of the road. Whatever the design process, verifications, and modelling tell you before, here you get real data about the situation.

Pictures used in this post are only illustrative and do not match the text perfectly. All trajectories are visualized, instead of particular groups.