org.opentrafficsim.road.gtu.lane.tactical.following

Class IDMPlus

java.lang.Object

org.opentrafficsim.road.gtu.lane.tactical.following.AbstractCarFollowingModel

org.opentrafficsim.road.gtu.lane.tactical.following.IDM

org.opentrafficsim.road.gtu.lane.tactical.following.IDMPlus

All Implemented Interfaces:

CarFollowingModel, GTUFollowingModelOld

public class IDMPlus
extends IDM

Implementation of the IDM+. See Schakel, W.J., Knoop, V.L., and Van Arem, B. (2012), LMRS: Integrated Lane Change Model with Relaxation and Synchronization, Transportation Research Records: Journal of the Transportation Research Board, No. 2316, pp. 47-57. Note in the official versions of TRB and TRR some errors appeared due to the typesetting of the papers (not in the preprint provided here). A list of errata for the official versions is found here.

Author:

Wouter Schakel

Field Summary

Fields inherited from class org.opentrafficsim.road.gtu.lane.tactical.following.IDM

DELTA

Constructor Summary

Constructors

Constructor and Description
IDMPlus()

Method Summary

Modifier and Type	Method and Description
protected org.djunits.value.vdouble.scalar.Acceleration	followingAcceleration(LaneBasedGTU gtu, org.djunits.value.vdouble.scalar.Speed speed, org.djunits.value.vdouble.scalar.Speed desiredSpeed, org.djunits.value.vdouble.scalar.Length.Rel desiredHeadway, SortedMap<org.djunits.value.vdouble.scalar.Length.Rel,org.djunits.value.vdouble.scalar.Speed> leaders) Multi-anticipative determination of car-following acceleration.
String	getLongName() Return the name complete of the car-following model.
String	getName() Return the name of the car-following model.

Methods inherited from class org.opentrafficsim.road.gtu.lane.tactical.following.IDM

desiredHeadway, desiredSpeed, dynamicDesiredHeadway, dynamicHeadwayTerm

Methods inherited from class org.opentrafficsim.road.gtu.lane.tactical.following.AbstractCarFollowingModel

computeAcceleration, computeAcceleration, computeAccelerationStep, computeAccelerationStep, computeAccelerationStep, computeAccelerationStep, computeAccelerationStepWithNoLeader, computeAccelerationStepWithNoLeader, computeDualAccelerationStep, computeDualAccelerationStep, followingAcceleration, followingAcceleration, freeAcceleration, getMaximumSafeDeceleration, getStepSize, minimumHeadway

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

IDMPlus

public IDMPlus()

Method Detail

followingAcceleration

protected org.djunits.value.vdouble.scalar.Acceleration followingAcceleration(LaneBasedGTU gtu,
                                                                              org.djunits.value.vdouble.scalar.Speed speed,
                                                                              org.djunits.value.vdouble.scalar.Speed desiredSpeed,
                                                                              org.djunits.value.vdouble.scalar.Length.Rel desiredHeadway,
                                                                              SortedMap<org.djunits.value.vdouble.scalar.Length.Rel,org.djunits.value.vdouble.scalar.Speed> leaders)
                                                                       throws org.opentrafficsim.core.gtu.drivercharacteristics.ParameterException

Multi-anticipative determination of car-following acceleration. The implementation should be able to deal with the current speed being higher than the desired speed. The tactical planner determines whether multi-anticipative car-following is applied, including to how many leaders and within what distance, by including these vehicles in the set. The car-following model itself may however only respond to the first vehicle.

Overrides:

followingAcceleration in class IDM

Parameters:

gtu - GTU for which the acceleration is calculated.

speed - Current speed.

desiredSpeed - Desired speed.

desiredHeadway - Desired headway.

leaders - Set of leader headways (guaranteed positive) and speeds, ordered by headway (closest first).

Returns:

Car-following acceleration.

Throws:

org.opentrafficsim.core.gtu.drivercharacteristics.ParameterException - If parameter exception occurs.

getName

public String getName()

Return the name of the car-following model.

Specified by:

getName in interface CarFollowingModel

Specified by:

getName in interface GTUFollowingModelOld

Overrides:

getName in class IDM

Returns:

Name of the car-following model.

getLongName

public String getLongName()

Return the name complete of the car-following model.

Specified by:

getLongName in interface CarFollowingModel

Specified by:

getLongName in interface GTUFollowingModelOld

Overrides:

getLongName in class IDM

Returns:

Complete name of the car-following model.