It is set to a non-zero value if a multi-lane change is being considered during path-finding.īoth cost factors control the tendency of vehicles to change lanes. The second cost factor is added upon the first factor.The first (base) cost factor amounts to a value that is proportional to the number of lanes to change.The AI calculates up to two cost factors for every considered lane change. This mechanism allows for a better spread of vehicles among the available lanes. This value determines the lane that the vehicle favors the most in order to traverse the respective road segments. If no countermeasures were taken secondary congestions in turn would again lead to congestion of the first road in question.ĭuring the calculation of the cost factors that are derived from traffic measurements a randomized portion is added to/ subtracted from the taken measurements to prevent those kinds of effects.ĭuring path-finding at every junction and highway transition that the vehicle may traverse a new randomized value is generated. These effects can occur when congested road segments are first avoided by the AI but then lead to secondary congestions because new vehicles are forced to take detours in order to avoid the first congested road. The algorithm incorporates mechanisms to avoid feedback effects. Based on this notion, roads that optimize the estimated traversal time are favored by the algorithm. Like in every ordinary path-finding algorithm, each road segment gets a unique cost assigned that represents the estimated time for an average vehicle to traverse it. The Advanced Vehicle AI uses this information to construct speed-optimal paths. In the background TM:PE constantly observes traffic volumes and average speeds for each built road segment and for each direction. Read Dynamic Lane Selection to learn how to enable real-time route adaptations. However, once a path is established and the vehicle is en route no further adaptations are made. The traffic situation at this moment is taken into consideration while the route is being planned. When activated, the AI calculates the route a vehicle will take just before the moment it starts driving. to prevent unnecessary lane changes from happening too frequently.to spread traffic to the available lanes more evenly, and.The Advanced Vehicle AI is a feature that integrates into the modified path-finding algorithm that is shipped with TM:PE.
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