Allow targeted driving/routing of vehicles in TrafficAction

Bugzilla Link	4168
Created on	Oct 10, 2019 08:40
Version	0.9.1

Extended Description

Currently, vehicles spawned by TrafficAction are following an intrinsic driver which can randomly navigate the given road network. In order to create targeted traffic on a road network, it would be helpful if the traffic between sources and sinks could be directed by the user.

Therefore, it is proposed to add a feature like "AcquirePosition" to the Source element of the TrafficAction. Additionally or alternatively, Sinks or Routes could be referenced directly.

This would allow for the creation of directed traffic between several road elements divided by junctions without having to define lots of vehicles with appropriate routes manually.