org.opentrafficsim.road.gtu.lane.tactical.util

Class ConflictUtil

java.lang.Object

org.opentrafficsim.road.gtu.lane.tactical.util.ConflictUtil

public final class ConflictUtil
extends Object

This class implements default behavior for intersection conflicts for use in tactical planners.

Copyright (c) 2013-2016 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 Jun 3, 2016

Author:

Alexander Verbraeck, Peter Knoppers, Wouter Schakel

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ConflictUtil.ConflictPlans Holds the tactical plans of a driver considering conflicts.

Field Summary

Fields

Modifier and Type	Field and Description
static org.opentrafficsim.core.gtu.behavioralcharacteristics.ParameterTypeDuration	MIN_GAP Minimum time gap between events.
static org.opentrafficsim.core.gtu.behavioralcharacteristics.ParameterTypeLength	S0_CONF Stopping distance at conflicts.
static org.opentrafficsim.core.gtu.behavioralcharacteristics.ParameterTypeLength	STOP_AREA Area before stop line where one is considered arrived at the intersection.
static org.opentrafficsim.core.gtu.behavioralcharacteristics.ParameterTypeDouble	TIME_FACTOR Multiplication factor on time for conservative assessment.

Method Summary

Modifier and Type

Method and Description

static org.djunits.value.vdouble.scalar.Acceleration

approachConflicts(org.opentrafficsim.core.gtu.behavioralcharacteristics.BehavioralCharacteristics behavioralCharacteristics, SortedSet<HeadwayConflict> conflicts, SortedSet<AbstractHeadwayGTU> leaders, CarFollowingModel carFollowingModel, org.djunits.value.vdouble.scalar.Length vehicleLength, org.djunits.value.vdouble.scalar.Speed speed, org.djunits.value.vdouble.scalar.Acceleration acceleration, SpeedLimitInfo speedLimitInfo, ConflictUtil.ConflictPlans conflictPlans) Approach conflicts by applying appropriate acceleration (or deceleration).

Methods inherited from class java.lang.Object

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

Field Detail

MIN_GAP

public static final org.opentrafficsim.core.gtu.behavioralcharacteristics.ParameterTypeDuration MIN_GAP

Minimum time gap between events.

S0_CONF

public static final org.opentrafficsim.core.gtu.behavioralcharacteristics.ParameterTypeLength S0_CONF

Stopping distance at conflicts.

TIME_FACTOR

public static final org.opentrafficsim.core.gtu.behavioralcharacteristics.ParameterTypeDouble TIME_FACTOR

Multiplication factor on time for conservative assessment.

STOP_AREA

public static final org.opentrafficsim.core.gtu.behavioralcharacteristics.ParameterTypeLength STOP_AREA

Area before stop line where one is considered arrived at the intersection.

Method Detail

approachConflicts

public static org.djunits.value.vdouble.scalar.Acceleration approachConflicts(org.opentrafficsim.core.gtu.behavioralcharacteristics.BehavioralCharacteristics behavioralCharacteristics,
                                                                              SortedSet<HeadwayConflict> conflicts,
                                                                              SortedSet<AbstractHeadwayGTU> leaders,
                                                                              CarFollowingModel carFollowingModel,
                                                                              org.djunits.value.vdouble.scalar.Length vehicleLength,
                                                                              org.djunits.value.vdouble.scalar.Speed speed,
                                                                              org.djunits.value.vdouble.scalar.Acceleration acceleration,
                                                                              SpeedLimitInfo speedLimitInfo,
                                                                              ConflictUtil.ConflictPlans conflictPlans)
                                                                       throws org.opentrafficsim.core.gtu.GTUException,
                                                                              org.opentrafficsim.core.gtu.behavioralcharacteristics.ParameterException

Approach conflicts by applying appropriate acceleration (or deceleration). The model may yield for a vehicle even while having priority. Such a 'yield plan' is remembered in YieldPlans. By forwarding the same YieldPlans for a GTU consistency of such plans is provided. If any conflict is not accepted to pass, stopping before a more upstream conflict is applied if there not sufficient stopping length in between conflicts.

Parameters:

behavioralCharacteristics - behavioral characteristics

conflicts - set of conflicts to approach

leaders - leading vehicles

carFollowingModel - car-following model

vehicleLength - length of vehicle

speed - current speed

acceleration - current acceleration

speedLimitInfo - speed limit info

conflictPlans - set of plans for conflict

Returns:

acceleration appropriate for approaching the conflicts

Throws:

org.opentrafficsim.core.gtu.GTUException - in case of an unsupported conflict rule

org.opentrafficsim.core.gtu.behavioralcharacteristics.ParameterException - if a parameter is not defined or out of bounds