Package org.opentrafficsim.road.gtu.generator.headway

Interface ArrivalsHeadwayGenerator.HeadwayDistribution

Enclosing class:

ArrivalsHeadwayGenerator

public static interface ArrivalsHeadwayGenerator.HeadwayDistribution

Headway distribution.

Copyright (c) 2013-2020 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved.
BSD-style license. See OpenTrafficSim License.

Version:

$Revision$, $LastChangedDate$, by $Author$, initial version 5 dec. 2017

Author:

Alexander Verbraeck, Peter Knoppers, Wouter Schakel

Field Summary

Fields

Modifier and Type	Field	Description
static ArrivalsHeadwayGenerator.HeadwayDistribution	CONSTANT	Constant headway.
static ArrivalsHeadwayGenerator.HeadwayDistribution	EXPONENTIAL	Exponential headway distribution.
static ArrivalsHeadwayGenerator.HeadwayDistribution	LOGNORMAL	Log-normal headway distribution (variance = 1.0).
static ArrivalsHeadwayGenerator.HeadwayDistribution	TRI_EXP	Triangular (left side, mean 2/3) and exponential (right side, mean 4/3) headway distribution.
static ArrivalsHeadwayGenerator.HeadwayDistribution	TRIANGULAR	Triangular headway distribution.
static ArrivalsHeadwayGenerator.HeadwayDistribution	UNIFORM	Uniform headway distribution.

Method Summary

Modifier and Type	Method	Description
double	draw(StreamInterface randomStream)	Draws a randomized headway factor.
java.lang.String	getName()	Returns the distribution name.

Field Details

CONSTANT

static final ArrivalsHeadwayGenerator.HeadwayDistribution CONSTANT

Constant headway.

EXPONENTIAL

static final ArrivalsHeadwayGenerator.HeadwayDistribution EXPONENTIAL

Exponential headway distribution.

UNIFORM

static final ArrivalsHeadwayGenerator.HeadwayDistribution UNIFORM

Uniform headway distribution.

TRIANGULAR

static final ArrivalsHeadwayGenerator.HeadwayDistribution TRIANGULAR

Triangular headway distribution.

TRI_EXP

static final ArrivalsHeadwayGenerator.HeadwayDistribution TRI_EXP

Triangular (left side, mean 2/3) and exponential (right side, mean 4/3) headway distribution.

LOGNORMAL

static final ArrivalsHeadwayGenerator.HeadwayDistribution LOGNORMAL

Log-normal headway distribution (variance = 1.0).

Method Details

draw

double draw(StreamInterface randomStream)

Draws a randomized headway factor. The average value returned is always 1.0. The returned value is applied on the demand pattern by (reversed) integration to derive actual headways.

Parameters:

randomStream - StreamInterface; random number stream

Returns:

randomized headway factor

getName

java.lang.String getName()

Returns the distribution name.

Returns:

distribution name