p_newell Class Reference

Parameter class for Newell's car-following model. More...

#include <p_newell.h>

Inheritance diagram for p_newell:

Public Member Functions
	p_newell ()
	Default constructor for p_newell.
	p_newell (double u, double w, double kj)
	Constructor with custom parameter values.
Public Member Functions inherited from params
	params ()
	Default constructor for the params class.

Public Attributes
double	u = 90.0 / 3.6
	Free-flow speed in meters per second (default: 90 km/h).
double	w = 18.0 / 3.6
	Wave speed in meters per second (default: 18 km/h).
double	kj = 0.15
	Jam density in vehicles per meter (default: 0.15 vehicles/meter).

Detailed Description

Parameter class for Newell's car-following model.

The p_newell class manages the specific parameters required for Newell's car-following model. These parameters control the behavior of vehicles in free-flow and congested traffic conditions.

Key Parameters:

• Free-flow speed (u): The speed at which vehicles travel under free-flow conditions (i.e., no congestion). This is typically set in meters per second.
• Wave speed (w): The speed at which congestion waves propagate backward through the traffic. This helps simulate how quickly disturbances in the flow of traffic spread.
• Jam density (kj): The density of vehicles in a jammed traffic condition, which helps define the minimum spacing between vehicles.

Constructor & Destructor Documentation

p_newell() [1/2]

p_newell::p_newell

(

)

Default constructor for p_newell.

Initializes the parameters with default values for free-flow speed, wave speed, and jam density. These defaults represent typical traffic conditions.

Default Values:

• Free-flow speed: 90 km/h
• Wave speed: 18 km/h
• Jam density: 0.15 vehicles per meter

p_newell() [2/2]

p_newell::p_newell	(	double	u,
		double	w,
		double	kj )

Constructor with custom parameter values.

This constructor allows setting custom values for free-flow speed (u), wave speed (w), and jam density (kj). These values can be used to simulate specific traffic scenarios.

Parameters

u	Free-flow speed in meters per second.
w	Wave speed in meters per second.
kj	Jam density in vehicles per meter.

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The documentation for this class was generated from the following file:

• include/p_newell.h