1. A system comprising: one or more capturing devices arranged for quick mounting and further configured to capture, over time, a sequence of images of a first vehicle being located within a specified distance from a second vehicle; a recorder configured to record, over time, momentary kinetics parameters of the second vehicle; an analyzer configured to apply a decision function to the captured images and the momentary kinetics parameters, to yield an analysis of a risk of collision between the first vehicle and the second vehicle.