Interaction state of the vehicle

The vehicle interacts with other vehicles and network objects. You can define the number of these interaction vehicles and interaction objects that the vehicle is aware of in order to interact with them (Editing the driving behavior parameter Following behavior).

The interaction state influences the acceleration or deceleration of the vehicle and shows the reason for this reaction. During a simulation run, you can show the interaction state of each vehicle in the network in the Vehicles In Network list (Displaying vehicles in the network in a list).

Interaction state	Description
Close up	The vehicle slowly closes in the following cases: There is a stationary vehicle in front of it while it is backing out of a parking space onto its original link and there is a stationary or approaching vehicle upstream until it reaches an obstacle, for example, a signal head, a stop sign, priority rule, conflict area. If it is a lead vehicle of a platoon approaching another vehicle that can join the platoon. The requirements concerning platoon creation must be fulfilled (Platoon properties and properties of platooning vehicles). If it approaches the last vehicle of a platoon and can join the platoon. The requirements concerning platoon creation must be fulfilled (Platoon properties and properties of platooning vehicles).
Approaching a platoon	The vehicle can approach the preceding vehicle and thus join the platoon as trailing vehicle. The vehicle can also be the lead vehicle of a platoon.
Brake BX	The vehicle brakes to keep the desired safety distance (before reaching the safety distance), approaching (Driving states in the traffic flow model according to Wiedemann).
Brake AX	The vehicle brakes to keep the desired safety distance (after reaching the safety distance) (Driving states in the traffic flow model according to Wiedemann).
Brake ZX	Target deceleration to an emergency stop distance for a lane change or a reduced speed area.
Brake LC	Slight deceleration for a lane change in order to wait for the next upstream gap in the adjacent lane.
Brake on curve	The vehicle brakes at an intermediate point with the radius effect Brake, so that it does not exceed the speed of the Curve speed function of its vehicle type and is able to drive through the curve at reduced speed.
Brake cooperative	Cooperative braking to allow another vehicle to change lanes (setting via parameter Maximum deceleration for cooperative braking) (Editing the driving behavior parameter Lane change behavior).
External	Acceleration/deceleration is controlled by an external driver model DLL (Activating external driver model via Driver Model DLL file).
Follow	Vehicle tries to follow a leading vehicle at its speed (Driving states in the traffic flow model according to Wiedemann).
Following in platoon	The vehicle is a trailing vehicle within the platoon. The platoon's lead vehicle does not adopt this state of interaction, but the state of interaction that applies based on its interaction with an interaction object or interaction vehicle.
Leaving platoon	The vehicle increases the distance to other vehicles with the aim of leaving the platoon, since it is reacting to an interaction object. The vehicle does not adopt this interaction state when it wants to leave the platoon to follow its route or path.
Stop	The vehicle stops.
Loss of attention	Based on the driving behavior, the attributes for Temporary loss of attention when following have an effect on the vehicle: It neither accelerates nor brakes, except in the case of emergency braking.
Pass	Acceleration/deceleration to reach a permitted speed depending on the lateral distance for passing another vehicle in the same lane or an adjacent lane.
Free	Vehicle is not affected by any relevant preceding vehicle. It tries to drive at desired speed, free driving (Driving states in the traffic flow model according to Wiedemann).

Superordinate topic:

Displaying vehicles in the network in a list