org.opentrafficsim.road.gtu.lane.perception.categories

Interface InfrastructurePerception

All Superinterfaces:

LaneBasedPerceptionCategory, PerceptionCategory<LaneBasedGTU,LanePerception>

All Known Implementing Classes:

DirectInfrastructurePerception

public interface InfrastructurePerception
extends LaneBasedPerceptionCategory

Copyright (c) 2013-2018 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 14 feb. 2017

Author:

Alexander Verbraeck, Peter Knoppers, Wouter Schakel

Method Summary

Modifier and Type	Method and Description
SortedSet<RelativeLane>	getCrossSection() Returns a set of relative lanes representing the cross section.
SortedSet<InfrastructureLaneChangeInfo>	getInfrastructureLaneChangeInfo(RelativeLane lane) Returns infrastructure lane change info of a lane.
Length	getLegalLaneChangePossibility(RelativeLane fromLane, LateralDirectionality lat) Returns the distance over which a lane change remains legally possible.
Length	getPhysicalLaneChangePossibility(RelativeLane fromLane, LateralDirectionality lat) Returns the distance over which a lane change remains physically possible.
SpeedLimitProspect	getSpeedLimitProspect(RelativeLane lane) Returns the prospect for speed limits on a lane (dynamic speed limits may vary between lanes).
default void	updateAll()
void	updateCrossSection() Updates a set of relative lanes representing the cross section.
void	updateInfrastructureLaneChangeInfo(RelativeLane lane) Updates the infrastructural lane change info.
void	updateLegalLaneChangePossibility(RelativeLane lane, LateralDirectionality lat) Updates the distance over which lane changes remains legally possible.
void	updatePhysicalLaneChangePossibility(RelativeLane lane, LateralDirectionality lat) Updates the distance over which lane changes remains physically possible.
void	updateSpeedLimitProspect(RelativeLane lane) Updates the speed limit prospect.

Method Detail

updateInfrastructureLaneChangeInfo

void updateInfrastructureLaneChangeInfo(RelativeLane lane)
                                 throws GTUException,
                                        ParameterException

Updates the infrastructural lane change info. It starts at the given lane and moves downstream over the network. Whenever a point is encountered where lane changes are required, this information is saved.

Parameters:

lane - relative lateral lane

Throws:

GTUException - if the GTU was not initialized or if the lane is not in the cross section

ParameterException - if a parameter is not defined

updateSpeedLimitProspect

void updateSpeedLimitProspect(RelativeLane lane)
                       throws GTUException,
                              ParameterException

Updates the speed limit prospect.

Parameters:

lane - relative lateral lane

Throws:

GTUException - if the GTU was not initialized or if the lane is not in the cross section

ParameterException - if a parameter is not defined

updateLegalLaneChangePossibility

void updateLegalLaneChangePossibility(RelativeLane lane,
                                      LateralDirectionality lat)
                               throws GTUException,
                                      ParameterException

Updates the distance over which lane changes remains legally possible.

Parameters:

lane - lane from which the lane change possibility is requested

lat - LEFT or RIGHT, null not allowed

Throws:

GTUException - if the GTU was not initialized or if the lane is not in the cross section

ParameterException - if a parameter is not defined

updatePhysicalLaneChangePossibility

void updatePhysicalLaneChangePossibility(RelativeLane lane,
                                         LateralDirectionality lat)
                                  throws GTUException,
                                         ParameterException

Updates the distance over which lane changes remains physically possible.

Parameters:

lane - lane from which the lane change possibility is requested

lat - LEFT or RIGHT, null not allowed

Throws:

GTUException - if the GTU was not initialized or if the lane is not in the cross section

ParameterException - if a parameter is not defined

updateCrossSection

void updateCrossSection()
                 throws GTUException,
                        ParameterException

Updates a set of relative lanes representing the cross section. This set consists of all lanes on the current link, and an additional lane on the left and/or right side in case of a merge that is sufficiently nearby.

Throws:

GTUException - if the GTU was not initialized

ParameterException - if a parameter is not defined

getInfrastructureLaneChangeInfo

SortedSet<InfrastructureLaneChangeInfo> getInfrastructureLaneChangeInfo(RelativeLane lane)

Returns infrastructure lane change info of a lane. A set is returned as multiple points may force lane changes. Which point is considered most critical is a matter of driver interpretation and may change over time. This is shown below. Suppose vehicle A needs to take the off-ramp, and that behavior is that the minimum distance per required lane change determines how critical it is. First, 400m before the lane-drop, the off-ramp is critical. 300m downstream, the lane-drop is critical. Info is sorted by distance, closest first.

 _______
 _ _A_ _\_________
 _ _ _ _ _ _ _ _ _
 _________ _ _ ___
          \_______
     (-)        Lane-drop: 1 lane change  in 400m (400m per lane change)
     (--------) Off-ramp:  3 lane changes in 900m (300m per lane change, critical)
     
     (-)        Lane-drop: 1 lane change  in 100m (100m per lane change, critical)
     (--------) Off-ramp:  3 lane changes in 600m (200m per lane change)
 

Parameters:

lane - relative lateral lane

Returns:

infrastructure lane change info of a lane

getSpeedLimitProspect

SpeedLimitProspect getSpeedLimitProspect(RelativeLane lane)

Returns the prospect for speed limits on a lane (dynamic speed limits may vary between lanes).

Parameters:

lane - relative lateral lane

Returns:

prospect for speed limits on a lane

getLegalLaneChangePossibility

Length getLegalLaneChangePossibility(RelativeLane fromLane,
                                     LateralDirectionality lat)

Returns the distance over which a lane change remains legally possible. Negative values indicate the distance over which a lane change is legally not possible.

Parameters:

fromLane - lane from which the lane change possibility is requested

lat - LEFT or RIGHT, null not allowed

Returns:

distance over which a lane change remains possible

Throws:

NullPointerException - if lat == null

getPhysicalLaneChangePossibility

Length getPhysicalLaneChangePossibility(RelativeLane fromLane,
                                        LateralDirectionality lat)

Returns the distance over which a lane change remains physically possible. Negative values indicate the distance over which a lane change is physically not possible.

Parameters:

fromLane - lane from which the lane change possibility is requested

lat - LEFT or RIGHT, null not allowed

Returns:

distance over which a lane change remains possible

Throws:

NullPointerException - if lat == null

getCrossSection

SortedSet<RelativeLane> getCrossSection()

Returns a set of relative lanes representing the cross section. Lanes are sorted left to right.

Returns:

set of relative lanes representing the cross section

updateAll

default void updateAll()
                throws GTUException,
                       ParameterException

Specified by:

updateAll in interface PerceptionCategory<LaneBasedGTU,LanePerception>

Throws:

GTUException

ParameterException