Movement in an usual direction can often be a precursor to an accident.
Our usual time direction algorithm finds people and vehicles that are moving in a direction that is not expected in the scene. Some examples of the types of events that this algorithm finds are:
Vehicles driving the wrong way in the car park or on the road
Children going the wrong way on the escalator
The direction algorithm determines typical direction expectations for people and vehicles in a scene at any given time and will raise an event when this direction changes.