This module simulates a traffic light in an urban environment. It incorporates a stationary mobility submodule to represent the fixed position of the traffic light, and a TrafficLightController submodule to model the traffic light's states (green, yellow, red) and its interactions with vehicles.

Usage diagram

The following diagram shows usage relationships between types. Unresolved types are missing from the diagram.

Parameters

Name	Type	Default value	Description
bidirectional	bool	false

Properties

Name	Value	Description
display	i=misc/node2_s;bgb=200,100

Unassigned submodule parameters

Name	Type	Default value	Description
mobility.subjectModule	string	"^"	module path which determines the subject module, the motion of which this mobility model describes, the default value is the parent module
mobility.coordinateSystemModule	string	""	module path of the geographic coordinate system module
mobility.displayStringTextFormat	string	"p: %p\nv: %v"	format string for the mobility module's display string text
mobility.updateDisplayString	bool	true	enables continuous update of the subject module's position via modifying its display string
mobility.constraintAreaMinX	double	-inf m	min x position of the constraint area, unconstrained by default (negative infinity)
mobility.constraintAreaMinY	double	-inf m	min y position of the constraint area, unconstrained by default (negative infinity)
mobility.constraintAreaMinZ	double	-inf m	min z position of the constraint area, unconstrained by default (negative infinity)
mobility.constraintAreaMaxX	double	inf m	max x position of the constraint area, unconstrained by default (positive infinity)
mobility.constraintAreaMaxY	double	inf m	max y position of the constraint area, unconstrained by default (positive infinity)
mobility.constraintAreaMaxZ	double	inf m	max z position of the constraint area, unconstrained by default (positive infinity)
mobility.initialX	double	uniform(this.constraintAreaMinX, this.constraintAreaMaxX)
mobility.initialY	double	uniform(this.constraintAreaMinY, this.constraintAreaMaxY)
mobility.initialZ	double	nanToZero(uniform(this.constraintAreaMinZ, this.constraintAreaMaxZ))
mobility.initialLatitude	double	nan deg
mobility.initialLongitude	double	nan deg
mobility.initialAltitude	double	0m
mobility.initialHeading	double	0deg
mobility.initialElevation	double	0deg
mobility.initialBank	double	0deg
mobility.initFromDisplayString	bool	true	enables one time initialization from the subject module's display string
mobility.updateFromDisplayString	bool	true	enables continuous update from the subject module's display string for dragging and rotating it
trafficLightController.mobilityModule	string	"^.mobility"
trafficLightController.greenPeriod	double	1s
trafficLightController.yellowPeriod	double	1s
trafficLightController.redPeriod	double	1s
trafficLightController.startTime	double	1s
trafficLightController.startState	int	3	do not use 0 or 2, for now!
trafficLightController.meanCarLength	double	4m
trafficLightController.areaWidth	double	1m

Source code

//
// This module simulates a traffic light in an urban environment.
// It incorporates a stationary mobility submodule to represent the fixed position
// of the traffic light, and a ~TrafficLightController submodule to model
// the traffic light's states (green, yellow, red) and its interactions with vehicles.
//
module TrafficLight
{
    parameters:
        @display("i=misc/node2_s;bgb=200,100");
        bool bidirectional = default(false);

    submodules:
        mobility: StationaryMobility {
            parameters:
                @display("p=142,52;is=s");
        }
        trafficLightController: TrafficLightController {
            parameters:
                @display("p=48,52;is=s");
                mobilityModule = default("^.mobility");
                bidirectional = parent.bidirectional;
        }
}

File: src/mobility/trafficLightMobility/TrafficLight.ned

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