LMRS.java
package org.opentrafficsim.road.gtu.lane.tactical.lmrs;
import org.djunits.value.vdouble.scalar.Length;
import org.djunits.value.vdouble.scalar.Speed;
import org.djunits.value.vdouble.scalar.Time;
import org.djutils.exceptions.Try;
import org.opentrafficsim.base.parameters.ParameterException;
import org.opentrafficsim.base.parameters.ParameterTypes;
import org.opentrafficsim.base.parameters.Parameters;
import org.opentrafficsim.core.gtu.GTUException;
import org.opentrafficsim.core.gtu.perception.EgoPerception;
import org.opentrafficsim.core.gtu.plan.operational.OperationalPlan;
import org.opentrafficsim.core.gtu.plan.operational.OperationalPlanException;
import org.opentrafficsim.core.network.NetworkException;
import org.opentrafficsim.road.gtu.lane.LaneBasedGTU;
import org.opentrafficsim.road.gtu.lane.perception.LanePerception;
import org.opentrafficsim.road.gtu.lane.perception.RelativeLane;
import org.opentrafficsim.road.gtu.lane.perception.categories.InfrastructurePerception;
import org.opentrafficsim.road.gtu.lane.plan.operational.LaneChange;
import org.opentrafficsim.road.gtu.lane.plan.operational.LaneOperationalPlanBuilder;
import org.opentrafficsim.road.gtu.lane.plan.operational.SimpleOperationalPlan;
import org.opentrafficsim.road.gtu.lane.tactical.Blockable;
import org.opentrafficsim.road.gtu.lane.tactical.DesireBased;
import org.opentrafficsim.road.gtu.lane.tactical.Synchronizable;
import org.opentrafficsim.road.gtu.lane.tactical.following.CarFollowingModel;
import org.opentrafficsim.road.gtu.lane.tactical.util.lmrs.Cooperation;
import org.opentrafficsim.road.gtu.lane.tactical.util.lmrs.Desire;
import org.opentrafficsim.road.gtu.lane.tactical.util.lmrs.GapAcceptance;
import org.opentrafficsim.road.gtu.lane.tactical.util.lmrs.Incentive;
import org.opentrafficsim.road.gtu.lane.tactical.util.lmrs.LmrsData;
import org.opentrafficsim.road.gtu.lane.tactical.util.lmrs.LmrsParameters;
import org.opentrafficsim.road.gtu.lane.tactical.util.lmrs.LmrsUtil;
import org.opentrafficsim.road.gtu.lane.tactical.util.lmrs.Synchronization;
import org.opentrafficsim.road.gtu.lane.tactical.util.lmrs.Tailgating;
import org.opentrafficsim.road.network.speed.SpeedLimitInfo;
import org.opentrafficsim.road.network.speed.SpeedLimitProspect;
import nl.tudelft.simulation.language.d3.DirectedPoint;
/**
* Implementation of the LMRS (Lane change Model with Relaxation and Synchronization). See Schakel, W.J., Knoop, V.L., and Van
* Arem, B. (2012), <a href="http://victorknoop.eu/research/papers/TRB2012_LMRS_reviewed.pdf">LMRS: Integrated Lane Change Model
* with Relaxation and Synchronization</a>, 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
* <a href="http://victorknoop.eu/research/papers/Erratum_LMRS.pdf">here</a>.
* <p>
* Copyright (c) 2013-2020 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved. <br>
* BSD-style license. See <a href="http://opentrafficsim.org/docs/current/license.html">OpenTrafficSim License</a>.
* <p>
* @version $Revision$, $LastChangedDate$, by $Author$, initial version Apr 13, 2016 <br>
* @author <a href="http://www.transport.citg.tudelft.nl">Wouter Schakel</a>
*/
public class LMRS extends AbstractIncentivesTacticalPlanner implements DesireBased, Synchronizable, Blockable
{
/** Serialization id. */
private static final long serialVersionUID = 20160300L;
/** Lane change status. */
private final LaneChange laneChange;
/** LMRS data. */
private final LmrsData lmrsData;
/**
* Constructor setting the car-following model.
* @param carFollowingModel CarFollowingModel; Car-following model.
* @param gtu LaneBasedGTU; GTU
* @param lanePerception LanePerception; perception
* @param synchronization Synchronization; type of synchronization
* @param cooperation Cooperation; type of cooperation
* @param gapAcceptance GapAcceptance; gap-acceptance
* @param tailgating Tailgating; tail gating
*/
public LMRS(final CarFollowingModel carFollowingModel, final LaneBasedGTU gtu, final LanePerception lanePerception,
final Synchronization synchronization, final Cooperation cooperation, final GapAcceptance gapAcceptance,
final Tailgating tailgating)
{
super(carFollowingModel, gtu, lanePerception);
this.laneChange = Try.assign(() -> new LaneChange(gtu), "Parameter LCDUR is required.", GTUException.class);
this.lmrsData = new LmrsData(synchronization, cooperation, gapAcceptance, tailgating);
}
/** {@inheritDoc} */
@Override
public final OperationalPlan generateOperationalPlan(final Time startTime, final DirectedPoint locationAtStartTime)
throws OperationalPlanException, GTUException, NetworkException, ParameterException
{
// obtain objects to get info
SpeedLimitProspect slp = getPerception().getPerceptionCategory(InfrastructurePerception.class)
.getSpeedLimitProspect(RelativeLane.CURRENT);
SpeedLimitInfo sli = slp.getSpeedLimitInfo(Length.ZERO);
Parameters params = getGtu().getParameters();
// LMRS
SimpleOperationalPlan simplePlan = LmrsUtil.determinePlan(getGtu(), startTime, getCarFollowingModel(), this.laneChange,
this.lmrsData, getPerception(), getMandatoryIncentives(), getVoluntaryIncentives());
// Lower acceleration from additional sources, consider adjacent lane when changing lane or synchronizing
Speed speed = getPerception().getPerceptionCategory(EgoPerception.class).getSpeed();
RelativeLane[] lanes;
double dLeft = params.getParameterOrNull(LmrsParameters.DLEFT);
double dRight = params.getParameterOrNull(LmrsParameters.DRIGHT);
double dSync = params.getParameterOrNull(LmrsParameters.DSYNC);
if (this.laneChange.isChangingLane())
{
lanes = new RelativeLane[] { RelativeLane.CURRENT, this.laneChange.getSecondLane(getGtu()) };
}
else if (dLeft >= dSync && dLeft >= dRight)
{
lanes = new RelativeLane[] { RelativeLane.CURRENT, RelativeLane.LEFT };
}
else if (dRight >= dSync)
{
lanes = new RelativeLane[] { RelativeLane.CURRENT, RelativeLane.RIGHT };
}
else
{
lanes = new RelativeLane[] { RelativeLane.CURRENT };
}
for (RelativeLane lane : lanes)
{
// On the current lane, consider all incentives. On adjacent lanes only consider incentives beyond the distance over
// which a lane change is not yet possible, i.e. the merge distance.
// TODO: consider route in incentives (only if not on current lane?)
Length mergeDistance = lane.isCurrent() ? Length.ZERO
: Synchronization.getMergeDistance(getPerception(), lane.getLateralDirectionality());
for (AccelerationIncentive incentive : getAccelerationIncentives())
{
incentive.accelerate(simplePlan, lane, mergeDistance, getGtu(), getPerception(), getCarFollowingModel(), speed,
params, sli);
}
}
if (simplePlan.isLaneChange())
{
this.laneChange.setDesiredLaneChangeDuration(getGtu().getParameters().getParameter(ParameterTypes.LCDUR));
// adjust lane based data in perception
}
// set turn indicator
simplePlan.setTurnIndicator(getGtu());
// create plan
return LaneOperationalPlanBuilder.buildPlanFromSimplePlan(getGtu(), startTime, simplePlan, this.laneChange);
}
/** {@inheritDoc} */
@Override
public final Desire getLatestDesire(final Class<? extends Incentive> incentiveClass)
{
return this.lmrsData.getLatestDesire(incentiveClass);
}
/** {@inheritDoc} */
@Override
public Synchronizable.State getSynchronizationState()
{
return this.lmrsData.getSynchronizationState();
}
/** {@inheritDoc} */
@Override
public boolean isBlocking()
{
for (AccelerationIncentive acc : getAccelerationIncentives())
{
if (acc instanceof AccelerationConflicts)
{
return ((AccelerationConflicts) acc).isBlocking();
}
}
return false;
}
/** {@inheritDoc} */
@Override
public final String toString()
{
return "LMRS [mandatoryIncentives=" + getMandatoryIncentives() + ", voluntaryIncentives=" + getVoluntaryIncentives()
+ ", accelerationIncentives = " + getAccelerationIncentives() + "]";
}
}