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SUMO - Simulation of Urban MObility
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The Intelligent Driver Model (IDM) car-following model. More...
#include <MSCFModel_IDM.h>
Data Structures | |
class | VehicleVariables |
Public Member Functions | |
VehicleVariables * | createVehicleVariables () const |
Returns model specific values which are stored inside a vehicle and must be used with casting. More... | |
MSCFModel * | duplicate (const MSVehicleType *vtype) const |
Duplicates the car-following model. More... | |
double | estimateSpeedAfterDistance (const double dist, const double v, const double accel) const |
double | getMaxAccel () const |
Get the vehicle type's maximum acceleration [m/s^2]. More... | |
double | getMaxDecel () const |
Get the vehicle type's maximum deceleration [m/s^2]. More... | |
double | getMinimalArrivalSpeed (double dist, double currentSpeed) const |
Computes the minimal possible arrival speed after covering a given distance. More... | |
double | getMinimalArrivalSpeedEuler (double dist, double currentSpeed) const |
Computes the minimal possible arrival speed after covering a given distance for Euler update. More... | |
SUMOTime | getMinimalArrivalTime (double dist, double currentSpeed, double arrivalSpeed) const |
Computes the minimal time needed to cover a distance given the desired speed at arrival. More... | |
double | maximumSafeFollowSpeed (double gap, double egoSpeed, double predSpeed, double predMaxDecel, bool onInsertion=false) const |
Returns the maximum safe velocity for following the given leader. More... | |
double | maximumSafeStopSpeed (double gap, double currentSpeed, bool onInsertion=false, double headway=-1) const |
Returns the maximum next velocity for stopping within gap. More... | |
double | maximumSafeStopSpeedBallistic (double gap, double currentSpeed, bool onInsertion=false, double headway=-1) const |
Returns the maximum next velocity for stopping within gap when using the ballistic positional update. More... | |
double | maximumSafeStopSpeedEuler (double gap) const |
Returns the maximum next velocity for stopping within gap when using the semi-implicit Euler update. More... | |
MSCFModel_IDM (const MSVehicleType *vtype, double accel, double decel, double emergencyDecel, double headwayTime, double delta, double internalStepping) | |
Constructor. More... | |
MSCFModel_IDM (const MSVehicleType *vtype, double accel, double decel, double emergencyDecel, double headwayTime, double adaptationFactor, double adaptationTime, double internalStepping) | |
Constructor. More... | |
~MSCFModel_IDM () | |
Destructor. More... | |
Implementations of the MSCFModel interface | |
double | moveHelper (MSVehicle *const veh, double vPos) const |
Applies interaction with stops and lane changing model influences. More... | |
double | followSpeed (const MSVehicle *const veh, double speed, double gap2pred, double predSpeed, double predMaxDecel) const |
Computes the vehicle's safe speed (no dawdling) More... | |
double | stopSpeed (const MSVehicle *const veh, const double speed, double gap2pred) const |
Computes the vehicle's safe speed for approaching a non-moving obstacle (no dawdling) More... | |
double | interactionGap (const MSVehicle *const, double vL) const |
Returns the maximum gap at which an interaction between both vehicles occurs. More... | |
int | getModelID () const |
Returns the model's name. More... | |
Methods to override by model implementation | |
virtual double | freeSpeed (const MSVehicle *const veh, double speed, double seen, double maxSpeed, const bool onInsertion=false) const |
Computes the vehicle's safe speed without a leader. More... | |
virtual double | insertionFollowSpeed (const MSVehicle *const veh, double speed, double gap2pred, double predSpeed, double predMaxDecel) const |
Computes the vehicle's safe speed (no dawdling) This method is used during the insertion stage. Whereas the method followSpeed returns the desired speed which may be lower than the safe speed, this method only considers safety constraints. More... | |
virtual double | insertionStopSpeed (const MSVehicle *const veh, double speed, double gap) const |
Computes the vehicle's safe speed for approaching an obstacle at insertion without constraints due to acceleration capabilities and previous speeds. More... | |
Virtual methods with default implementation | |
virtual double | getImperfection () const |
Get the driver's imperfection. More... | |
virtual double | getHeadwayTime () const |
Get the driver's reaction time [s]. More... | |
Setter methods | |
virtual void | setMaxAccel (double accel) |
Sets a new value for maximum acceleration [m/s^2]. More... | |
virtual void | setMaxDecel (double decel) |
Sets a new value for maximum deceleration [m/s^2]. More... | |
virtual void | setImperfection (double imperfection) |
Sets a new value for driver imperfection. More... | |
virtual void | setHeadwayTime (double headwayTime) |
Sets a new value for driver reaction time [s]. More... | |
Static Public Member Functions | |
static double | gapExtrapolation (const double duration, const double currentGap, double v1, double v2, double a1=0, double a2=0, const double maxV1=std::numeric_limits< double >::max(), const double maxV2=std::numeric_limits< double >::max()) |
return the resulting gap if, starting with gap currentGap, two vehicles continue with constant accelerations (velocities bounded by 0 and maxSpeed) for a given timespan of length 'duration'. More... | |
static double | passingTime (const double lastPos, const double passedPos, const double currentPos, const double lastSpeed, const double currentSpeed) |
Calculates the time at which the position passedPosition has been passed In case of a ballistic update, the possibility of a stop within a time step requires more information about the last time-step than in case of the euler update to determine the last position if the currentSpeed is zero. More... | |
static double | speedAfterTime (const double t, const double oldSpeed, const double dist) |
Calculates the speed after a time t [0,TS] given the initial speed and the distance traveled in an interval of step length TS. More... | |
Protected Attributes | |
double | myAccel |
The vehicle's maximum acceleration [m/s^2]. More... | |
double | myApparentDecel |
The vehicle's deceleration as expected by surrounding traffic [m/s^2]. More... | |
double | myDecel |
The vehicle's maximum deceleration [m/s^2]. More... | |
double | myEmergencyDecel |
The vehicle's maximum emergency deceleration [m/s^2]. More... | |
double | myHeadwayTime |
The driver's desired time headway (aka reaction time tau) [s]. More... | |
const MSVehicleType * | myType |
The type to which this model definition belongs to. More... | |
Private Member Functions | |
double | _v (const MSVehicle *const veh, const double gap2pred, const double mySpeed, const double predSpeed, const double desSpeed, const bool respectMinGap=true) const |
MSCFModel_IDM & | operator= (const MSCFModel_IDM &s) |
Invalidated assignment operator. More... | |
Private Attributes | |
const double | myAdaptationFactor |
The IDMM adaptation factor beta. More... | |
const double | myAdaptationTime |
The IDMM adaptation time tau. More... | |
const double | myDelta |
The IDM delta exponent. More... | |
const int | myIterations |
The number of iterations in speed calculations. More... | |
const double | myTwoSqrtAccelDecel |
A computational shortcut. More... | |
Currently fixed methods | |
virtual double | maxNextSpeed (double speed, const MSVehicle *const veh) const |
Returns the maximum speed given the current speed. More... | |
virtual double | minNextSpeed (double speed, const MSVehicle *const veh=0) const |
Returns the minimum speed given the current speed (depends on the numerical update scheme and its step width) Note that it wouldn't have to depend on the numerical update scheme if the semantics would rely on acceleration instead of velocity. More... | |
double | brakeGap (const double speed) const |
Returns the distance the vehicle needs to halt including driver's reaction time, assuming that during the reaction time, the speed remains constant. More... | |
double | getSecureGap (const double speed, const double leaderSpeed, const double leaderMaxDecel) const |
Returns the minimum gap to reserve if the leader is braking at maximum (>=0) More... | |
virtual double | getSpeedAfterMaxDecel (double v) const |
Returns the velocity after maximum deceleration. More... | |
static double | freeSpeed (const double currentSpeed, const double decel, const double dist, const double maxSpeed, const bool onInsertion) |
static double | brakeGap (const double speed, const double decel, const double headwayTime) |
The Intelligent Driver Model (IDM) car-following model.
Definition at line 48 of file MSCFModel_IDM.h.
MSCFModel_IDM::MSCFModel_IDM | ( | const MSVehicleType * | vtype, |
double | accel, | ||
double | decel, | ||
double | emergencyDecel, | ||
double | headwayTime, | ||
double | delta, | ||
double | internalStepping | ||
) |
Constructor.
[in] | accel | The maximum acceleration |
[in] | decel | The maximum deceleration |
[in] | emergencyDecel | The maximum emergency deceleration |
[in] | headwayTime | the headway gap |
[in] | delta | a model constant |
[in] | internalStepping | internal time step size |
Definition at line 43 of file MSCFModel_IDM.cpp.
Referenced by duplicate().
MSCFModel_IDM::MSCFModel_IDM | ( | const MSVehicleType * | vtype, |
double | accel, | ||
double | decel, | ||
double | emergencyDecel, | ||
double | headwayTime, | ||
double | adaptationFactor, | ||
double | adaptationTime, | ||
double | internalStepping | ||
) |
Constructor.
[in] | accel | The maximum acceleration |
[in] | decel | The maximum deceleration |
[in] | headwayTime | the headway gap |
[in] | adaptationFactor | a model constant |
[in] | adaptationTime | a model constant |
[in] | internalStepping | internal time step size |
Definition at line 54 of file MSCFModel_IDM.cpp.
MSCFModel_IDM::~MSCFModel_IDM | ( | ) |
Destructor.
Definition at line 66 of file MSCFModel_IDM.cpp.
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private |
Definition at line 111 of file MSCFModel_IDM.cpp.
References ACCEL2SPEED, MSVehicle::getCarFollowVariables(), MSVehicleType::getMinGap(), MSCFModel_IDM::VehicleVariables::levelOfService, MAX2(), MSCFModel::myAccel, myAdaptationFactor, myDelta, MSCFModel::myHeadwayTime, myIterations, myTwoSqrtAccelDecel, MSCFModel::myType, and SPEED2DIST.
Referenced by followSpeed(), and stopSpeed().
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inlineinherited |
Returns the distance the vehicle needs to halt including driver's reaction time, assuming that during the reaction time, the speed remains constant.
[in] | speed | The vehicle's current speed |
Definition at line 263 of file MSCFModel.h.
References MSCFModel::freeSpeed(), MSCFModel::myDecel, and MSCFModel::myHeadwayTime.
Referenced by MSLCM_LC2013::_wantsChange(), MSLCM_SL2015::_wantsChangeSublane(), MSLaneChanger::changeOpposite(), MSLCM_SL2015::checkBlockingVehicles(), MSLaneChanger::checkChange(), MSLane::checkFailure(), MSVehicle::checkRewindLinkLanes(), MSVehicle::executeMove(), MSLane::getCriticalLeader(), MSLane::getLeader(), MSVehicle::getLeader(), MSLane::getLeaderOnConsecutive(), MSLaneChangerSublane::getLeaders(), MSLane::getLeadersOnConsecutive(), MSLaneChanger::getRealLeader(), MSVehicle::getRerouteOrigin(), MSCFModel::getSecureGap(), MSLane::handleCollisionBetween(), MSLCM_LC2013::informLeader(), MSLCM_SL2015::informLeader(), MSLane::isInsertionSuccess(), MSLane::lastInsertion(), MSCFModel::maximumSafeFollowSpeed(), MSVehicle::planMoveInternal(), MSLCM_SL2015::saveBlockerLength(), MSLCM_LC2013::saveBlockerLength(), and MSVehicle::unsafeLinkAhead().
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staticinherited |
Definition at line 66 of file MSCFModel.cpp.
References ACCEL2SPEED, MSGlobals::gSemiImplicitEulerUpdate, and SPEED2DIST.
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inlinevirtual |
Returns model specific values which are stored inside a vehicle and must be used with casting.
Reimplemented from MSCFModel.
Definition at line 141 of file MSCFModel_IDM.h.
References myAdaptationFactor.
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virtual |
Duplicates the car-following model.
[in] | vtype | The vehicle type this model belongs to (1:1) |
Implements MSCFModel.
Definition at line 140 of file MSCFModel_IDM.cpp.
References MSCFModel_IDM(), MSCFModel::myAccel, MSCFModel::myDecel, myDelta, MSCFModel::myEmergencyDecel, MSCFModel::myHeadwayTime, myIterations, and TS.
Referenced by getModelID().
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inherited |
Definition at line 473 of file MSCFModel.cpp.
References MSVehicleType::getMaxSpeed(), MAX2(), MIN2(), and MSCFModel::myType.
Referenced by MSVehicle::estimateLeaveSpeed(), MSCFModel::getMinimalArrivalSpeed(), MSCFModel::getMinimalArrivalSpeedEuler(), MSCFModel::getSpeedAfterMaxDecel(), and MSVehicle::planMoveInternal().
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virtual |
Computes the vehicle's safe speed (no dawdling)
[in] | veh | The vehicle (EGO) |
[in] | speed | The vehicle's speed |
[in] | gap2pred | The (netto) distance to the LEADER |
[in] | predSpeed | The speed of LEADER |
Implements MSCFModel.
Definition at line 81 of file MSCFModel_IDM.cpp.
References _v(), MSVehicle::getLane(), and MSLane::getVehicleMaxSpeed().
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virtualinherited |
Computes the vehicle's safe speed without a leader.
Returns the velocity of the vehicle in dependence to the length of the free street and the target velocity at the end of the free range. If onInsertion is true, the vehicle may still brake before the next movement.
[in] | veh | The vehicle (EGO) |
[in] | speed | The vehicle's speed |
[in] | seen | The look ahead distance |
[in] | maxSpeed | The maximum allowed speed |
[in] | onInsertion | whether speed at insertion is asked for |
Reimplemented in MSCFModel_Rail.
Definition at line 211 of file MSCFModel.cpp.
References MSCFModel::myDecel.
Referenced by MSCFModel::brakeGap(), MSLane::isInsertionSuccess(), and MSVehicle::planMoveInternal().
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staticinherited |
Definition at line 85 of file MSCFModel.cpp.
References ACCEL2DIST, ACCEL2SPEED, DIST2SPEED, MSGlobals::gSemiImplicitEulerUpdate, MAX2(), NUMERICAL_EPS, SPEED2DIST, and TS.
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staticinherited |
return the resulting gap if, starting with gap currentGap, two vehicles continue with constant accelerations (velocities bounded by 0 and maxSpeed) for a given timespan of length 'duration'.
[in] | currentGap | (pos(veh1) - pos(veh2) at start) |
[in] | v1 | initial speed of vehicle 1 |
[in] | v2 | initial speed of vehicle 2 |
[in] | a1 | acceleration of vehicle 1 |
[in] | a2 | acceleration of vehicle 2 |
[in] | maxV1 | maximal speed of vehicle 1 |
[in] | maxV2 | maximal speed of vehicle 2 |
[in] | duration | time span for the process |
Definition at line 278 of file MSCFModel.cpp.
References MSGlobals::gSemiImplicitEulerUpdate, MAX2(), MIN2(), and TS.
Referenced by MSCFModel::getSpeedAfterMaxDecel(), and MSLCM_LC2013::informFollower().
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inlinevirtualinherited |
Get the driver's reaction time [s].
Definition at line 220 of file MSCFModel.h.
References MSCFModel::maxNextSpeed(), MSCFModel::minNextSpeed(), and MSCFModel::myHeadwayTime.
Referenced by MSLCM_SL2015::checkBlockingVehicles(), MSVehicle::checkRewindLinkLanes(), MSCFModel::getMinimalArrivalSpeed(), MSCFModel::getMinimalArrivalSpeedEuler(), TraCI_VehicleType::getTau(), and MSCalibrator::remainingVehicleCapacity().
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inlinevirtualinherited |
Get the driver's imperfection.
Reimplemented in MSCFModel_KraussOrig1, MSCFModel_PWag2009, MSCFModel_SmartSK, and MSCFModel_Daniel1.
Definition at line 212 of file MSCFModel.h.
Referenced by TraCI_VehicleType::getImperfection().
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inlineinherited |
Get the vehicle type's maximum acceleration [m/s^2].
Definition at line 193 of file MSCFModel.h.
References MSCFModel::myAccel.
Referenced by MSLCM_LC2013::_wantsChange(), MSLaneChanger::computeOvertakingTime(), MEVehicle::estimateLeaveSpeed(), MSVehicle::estimateLeaveSpeed(), TraCI_VehicleType::getAccel(), MSCFModel::getMinimalArrivalTime(), MSLCM_LC2013::informFollower(), MSCFModel_KraussPS::maxNextSpeed(), MSCFModel::maxNextSpeed(), MSVehicle::planMoveInternal(), and MSMeanData_Emissions::MSLaneMeanDataValues::write().
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inlineinherited |
Get the vehicle type's maximum deceleration [m/s^2].
Definition at line 201 of file MSCFModel.h.
References MSCFModel::myDecel.
Referenced by MSLCM_LC2013::_wantsChange(), MSCriticalFollowerDistanceInfo::addFollower(), MSLink::blockedByFoe(), MSLaneChanger::changeOpposite(), MSLCM_SL2015::checkBlockingVehicles(), MSLaneChanger::checkChange(), MSVehicle::checkRewindLinkLanes(), MSLCM_SL2015::checkStrategicChange(), MSLaneChanger::computeOvertakingTime(), MSLink::couldBrakeForLeader(), MSVehicle::executeMove(), MSLane::freeInsertion(), MSLane::getCriticalLeader(), TraCI_VehicleType::getDecel(), MSLane::getLeaderOnConsecutive(), MSLane::getLeadersOnConsecutive(), MSCFModel::getMinimalArrivalSpeed(), MSCFModel::getMinimalArrivalSpeedEuler(), MSCFModel::getMinimalArrivalTime(), MSLane::getMissingRearGap(), MSLink::getZipperSpeed(), MSLCM_DK2008::informBlocker(), MSLCM_LC2013::informFollower(), MSLCM_SL2015::informFollower(), MSLCM_LC2013::informLeader(), MSLCM_SL2015::informLeader(), MSLane::isInsertionSuccess(), MESegment::isOpen(), MSLane::lastInsertion(), MSLink::maybeOccupied(), MSCFModel_KraussOrig1::moveHelper(), MSLCM_LC2013::overtakeDistance(), MSVehicle::planMoveInternal(), MSLane::safeInsertionSpeed(), MSLCM_SL2015::saveBlockerLength(), MSLCM_LC2013::saveBlockerLength(), GUIVehicle::selectBlockingFoes(), MSLCM_LC2013::slowDownForBlocked(), MSLCM_SL2015::slowDownForBlocked(), MSLCM_SL2015::updateExpectedSublaneSpeeds(), MSVehicleControl::vehicleDeparted(), MSLCM_DK2008::wantsChangeToLeft(), and MSLCM_DK2008::wantsChangeToRight().
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inherited |
Computes the minimal possible arrival speed after covering a given distance.
[in] | dist | Distance to be covered |
[in] | currentSpeed | Actual speed of vehicle |
Definition at line 252 of file MSCFModel.cpp.
References MSCFModel::estimateSpeedAfterDistance(), MSCFModel::getHeadwayTime(), and MSCFModel::getMaxDecel().
Referenced by MSCFModel::getSpeedAfterMaxDecel(), and MSVehicle::planMoveInternal().
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inherited |
Computes the minimal possible arrival speed after covering a given distance for Euler update.
[in] | dist | Distance to be covered |
[in] | currentSpeed | Actual speed of vehicle |
Definition at line 259 of file MSCFModel.cpp.
References MSCFModel::estimateSpeedAfterDistance(), MSCFModel::getHeadwayTime(), MSCFModel::getMaxDecel(), and INVALID_SPEED.
Referenced by MSCFModel::getSpeedAfterMaxDecel(), and MSVehicle::planMoveInternal().
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inherited |
Computes the minimal time needed to cover a distance given the desired speed at arrival.
[in] | dist | Distance to be covered |
[in] | currentSpeed | Actual speed of vehicle |
[in] | arrivalSpeed | Desired speed at arrival |
Definition at line 239 of file MSCFModel.cpp.
References MSCFModel::getMaxAccel(), MSCFModel::getMaxDecel(), MAX2(), MAX3(), SUMO_const_haltingSpeed, and TIME2STEPS.
Referenced by MSCFModel::getSpeedAfterMaxDecel(), and MSVehicle::planMoveInternal().
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inlinevirtual |
Returns the model's name.
Implements MSCFModel.
Definition at line 127 of file MSCFModel_IDM.h.
References duplicate(), myAdaptationFactor, SUMO_TAG_CF_IDM, and SUMO_TAG_CF_IDMM.
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inlineinherited |
Returns the minimum gap to reserve if the leader is braking at maximum (>=0)
[in] | speed | EGO's speed |
[in] | leaderSpeed | LEADER's speed |
[in] | leaderMaxDecel | LEADER's max. deceleration rate |
Definition at line 276 of file MSCFModel.h.
References MSCFModel::brakeGap(), MAX2(), MIN2(), MSCFModel::myDecel, and MSCFModel::myHeadwayTime.
Referenced by MSLCM_LC2013::_wantsChange(), MSLCM_SL2015::_wantsChangeSublane(), MSCriticalFollowerDistanceInfo::addFollower(), MSLaneChanger::changeOpposite(), MSLCM_SL2015::checkBlockingVehicles(), MSLaneChanger::checkChange(), MSLaneChanger::computeOvertakingTime(), MSLane::freeInsertion(), MSLane::getMissingRearGap(), MSLCM_DK2008::informBlocker(), MSLCM_LC2013::informFollower(), MSLCM_SL2015::informFollower(), MSLCM_LC2013::informLeader(), MSLCM_SL2015::informLeader(), MSLane::isInsertionSuccess(), MSLane::lastInsertion(), and MSLCM_LC2013::overtakeDistance().
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inlinevirtualinherited |
Returns the velocity after maximum deceleration.
[in] | v | The velocity |
Reimplemented in MSCFModel_Rail.
Definition at line 302 of file MSCFModel.h.
References ACCEL2SPEED, MSCFModel::estimateSpeedAfterDistance(), MSCFModel::gapExtrapolation(), MSCFModel::getMinimalArrivalSpeed(), MSCFModel::getMinimalArrivalSpeedEuler(), MSCFModel::getMinimalArrivalTime(), max, MAX2(), MSCFModel::myDecel, MSCFModel::passingTime(), and MSCFModel::speedAfterTime().
Referenced by MSCFModel_SmartSK::followSpeed(), MSCFModel_Daniel1::moveHelper(), MSCFModel_SmartSK::moveHelper(), MSCFModel_KraussX::moveHelper(), MSCFModel::moveHelper(), MSVehicle::planMoveInternal(), MSCFModel_SmartSK::stopSpeed(), and MSCFModel_Wiedemann::stopSpeed().
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virtualinherited |
Computes the vehicle's safe speed (no dawdling) This method is used during the insertion stage. Whereas the method followSpeed returns the desired speed which may be lower than the safe speed, this method only considers safety constraints.
Returns the velocity of the vehicle in dependence to the vehicle's and its leader's values and the distance between them.
[in] | veh | The vehicle (EGO) |
[in] | speed | The vehicle's speed |
[in] | gap2pred | The (netto) distance to the LEADER |
[in] | predSpeed | The speed of LEADER |
Reimplemented in MSCFModel_KraussOrig1.
Definition at line 218 of file MSCFModel.cpp.
References MSGlobals::gSemiImplicitEulerUpdate, and MSCFModel::maximumSafeFollowSpeed().
Referenced by MSLane::freeInsertion(), MSLane::getCriticalLeader(), MSLane::isInsertionSuccess(), and MSLane::safeInsertionSpeed().
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virtualinherited |
Computes the vehicle's safe speed for approaching an obstacle at insertion without constraints due to acceleration capabilities and previous speeds.
[in] | veh | The vehicle (EGO) |
[in] | speed | The vehicle's speed |
[in] | gap | The (netto) distance to the the obstacle |
Definition at line 229 of file MSCFModel.cpp.
References MSVehicleType::getMaxSpeed(), MSGlobals::gSemiImplicitEulerUpdate, MSCFModel::maximumSafeStopSpeed(), MIN2(), MSCFModel::myType, and MSCFModel::stopSpeed().
Referenced by MSLane::isInsertionSuccess().
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virtual |
Returns the maximum gap at which an interaction between both vehicles occurs.
"interaction" means that the LEADER influences EGO's speed.
[in] | veh | The EGO vehicle |
[in] | vL | LEADER's speed |
Reimplemented from MSCFModel.
Definition at line 97 of file MSCFModel_IDM.cpp.
References MSVehicle::getLane(), MSVehicle::getSpeed(), MSLane::getVehicleMaxSpeed(), MAX2(), MSCFModel::myAccel, MSCFModel::myDecel, myDelta, and SPEED2DIST.
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inherited |
Returns the maximum safe velocity for following the given leader.
[in] | gap2pred | The (netto) distance to the LEADER |
[in] | egoSpeed | The FOLLOWERS's speed |
[in] | predSpeed | The LEADER's speed |
[in] | predMaxDecel | The LEADER's maximum deceleration |
[in] | onInsertion | Indicator whether the call is triggered during vehicle insertion |
Returns the SK-vsafe.
Definition at line 590 of file MSCFModel.cpp.
References MSCFModel::brakeGap(), MSGlobals::gSemiImplicitEulerUpdate, ISNAN(), MAX2(), MSCFModel::maximumSafeStopSpeed(), MSCFModel::myDecel, and MSCFModel::myHeadwayTime.
Referenced by MSCFModel_KraussOrig1::followSpeed(), MSCFModel_Krauss::followSpeed(), MSCFModel_KraussOrig1::insertionFollowSpeed(), MSCFModel::insertionFollowSpeed(), and MSCFModel::setHeadwayTime().
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inherited |
Returns the maximum next velocity for stopping within gap.
[in] | gap | The (netto) distance to the desired stopping point |
[in] | currentSpeed | The current speed of the ego vehicle |
[in] | onInsertion | Indicator whether the call is triggered during vehicle insertion |
[in] | headway | The desired time headway to be included in the calculations (default argument -1 induces the use of myHeadway) |
Definition at line 482 of file MSCFModel.cpp.
References MSGlobals::gSemiImplicitEulerUpdate, MSCFModel::maximumSafeStopSpeedBallistic(), and MSCFModel::maximumSafeStopSpeedEuler().
Referenced by MSCFModel::insertionStopSpeed(), MSCFModel::maximumSafeFollowSpeed(), MSVehicle::planMoveInternal(), MSCFModel::setHeadwayTime(), MSCFModel_Krauss::stopSpeed(), and MSCFModel_Rail::stopSpeed().
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inherited |
Returns the maximum next velocity for stopping within gap when using the ballistic positional update.
[in] | gap | The (netto) distance to the desired stopping point |
[in] | currentSpeed | The current speed of the ego vehicle |
[in] | onInsertion | Indicator whether the call is triggered during vehicle insertion |
[in] | headway | The desired time headway to be included in the calculations (default argument -1 induces the use of myHeadway) |
Definition at line 523 of file MSCFModel.cpp.
References INVALID_SPEED, MAX2(), MSCFModel::myDecel, MSCFModel::myHeadwayTime, NUMERICAL_EPS, and TS.
Referenced by MSCFModel::maximumSafeStopSpeed(), MSCFModel::setHeadwayTime(), and MSCFModel_KraussOrig1::stopSpeed().
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inherited |
Returns the maximum next velocity for stopping within gap when using the semi-implicit Euler update.
[in] | gap | The (netto) distance to the LEADER |
Definition at line 492 of file MSCFModel.cpp.
References ACCEL2SPEED, DIST2SPEED, MIN2(), MSCFModel::myDecel, MSCFModel::myHeadwayTime, NUMERICAL_EPS, and TS.
Referenced by MSCFModel::maximumSafeStopSpeed(), and MSCFModel::setHeadwayTime().
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virtualinherited |
Returns the maximum speed given the current speed.
The implementation of this method must take into account the time step duration.
Justification: Due to air brake or other influences, the vehicle's next maximum speed may depend on the vehicle's current speed (given).
[in] | speed | The vehicle's current speed |
[in] | speed | The vehicle itself, for obtaining other values |
Reimplemented in MSCFModel_KraussPS, and MSCFModel_Rail.
Definition at line 193 of file MSCFModel.cpp.
References ACCEL2SPEED, MSCFModel::getMaxAccel(), MSVehicleType::getMaxSpeed(), MIN2(), and MSCFModel::myType.
Referenced by MSVehicle::executeMove(), MSCFModel_Kerner::followSpeed(), MSCFModel_Daniel1::followSpeed(), MSCFModel_SmartSK::followSpeed(), MSCFModel_KraussOrig1::followSpeed(), MSCFModel_Krauss::followSpeed(), MSCFModel::getHeadwayTime(), MSCFModel::interactionGap(), MSCFModel_Daniel1::moveHelper(), MSCFModel_SmartSK::moveHelper(), MSCFModel_KraussOrig1::moveHelper(), MSCFModel_KraussX::moveHelper(), MSCFModel::moveHelper(), MSLCM_DK2008::patchSpeed(), MSVehicle::planMoveInternal(), MSCFModel_Krauss::stopSpeed(), MSCFModel_Kerner::stopSpeed(), MSCFModel_Daniel1::stopSpeed(), MSCFModel_SmartSK::stopSpeed(), MSCFModel_KraussOrig1::stopSpeed(), and MSCFModel_Wiedemann::stopSpeed().
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virtualinherited |
Returns the minimum speed given the current speed (depends on the numerical update scheme and its step width) Note that it wouldn't have to depend on the numerical update scheme if the semantics would rely on acceleration instead of velocity.
[in] | speed | The vehicle's current speed |
[in] | speed | The vehicle itself, for obtaining other values, if needed as e.g. road conditions. |
Reimplemented in MSCFModel_Rail.
Definition at line 198 of file MSCFModel.cpp.
References ACCEL2SPEED, MSGlobals::gSemiImplicitEulerUpdate, MAX2(), and MSCFModel::myEmergencyDecel.
Referenced by MSCFModel_KraussOrig1::followSpeed(), MSCFModel_Krauss::followSpeed(), MSCFModel::getHeadwayTime(), MSCFModel_KraussOrig1::moveHelper(), MSCFModel_KraussX::moveHelper(), and MSCFModel::moveHelper().
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Applies interaction with stops and lane changing model influences.
[in] | veh | The ego vehicle |
[in] | vPos | The possible velocity |
Reimplemented from MSCFModel.
Definition at line 70 of file MSCFModel_IDM.cpp.
References MSVehicle::getCarFollowVariables(), MSVehicle::getLane(), MSLane::getVehicleMaxSpeed(), MSCFModel_IDM::VehicleVariables::levelOfService, MSCFModel::moveHelper(), myAdaptationFactor, myAdaptationTime, and TS.
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Invalidated assignment operator.
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Calculates the time at which the position passedPosition has been passed In case of a ballistic update, the possibility of a stop within a time step requires more information about the last time-step than in case of the euler update to determine the last position if the currentSpeed is zero.
[in] | lastPos | the position at time t=0 (must be < currentPos) |
[in] | passedPos | the position for which the passing time is to be determined (has to lie within [lastPos, currentPos]!) |
[in] | currentPos | the position at time t=TS (one time-step after lastPos) (must be > lastPos) |
[in] | lastSpeed | the speed at moment t=0 |
[in] | currentSpeed | the speed at moment t=TS |
Definition at line 372 of file MSCFModel.cpp.
References MSGlobals::gSemiImplicitEulerUpdate, MAX2(), MIN2(), NUMERICAL_EPS, SPEED2ACCEL, TS, and WRITE_ERROR.
Referenced by MSE2Collector::calculateTimeLossAndTimeOnDetector(), MSCFModel::getSpeedAfterMaxDecel(), MSE3Collector::MSE3EntryReminder::notifyMove(), MSInstantInductLoop::notifyMove(), MSMeanData::MeanDataValues::notifyMove(), MSInductLoop::notifyMove(), and MSE3Collector::MSE3LeaveReminder::notifyMove().
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Sets a new value for driver reaction time [s].
[in] | headwayTime | The new driver reaction time (in s) |
Reimplemented in MSCFModel_KraussOrig1, MSCFModel_SmartSK, and MSCFModel_Daniel1.
Definition at line 415 of file MSCFModel.h.
References MSCFModel::maximumSafeFollowSpeed(), MSCFModel::maximumSafeStopSpeed(), MSCFModel::maximumSafeStopSpeedBallistic(), MSCFModel::maximumSafeStopSpeedEuler(), and MSCFModel::myHeadwayTime.
Referenced by TraCI_VehicleType::setTau().
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Sets a new value for driver imperfection.
[in] | accel | The new driver imperfection |
Reimplemented in MSCFModel_KraussOrig1, MSCFModel_SmartSK, and MSCFModel_Daniel1.
Definition at line 407 of file MSCFModel.h.
References UNUSED_PARAMETER.
Referenced by TraCI_VehicleType::setImperfection().
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Sets a new value for maximum acceleration [m/s^2].
[in] | accel | The new acceleration in m/s^2 |
Definition at line 391 of file MSCFModel.h.
References MSCFModel::myAccel.
Referenced by TraCI_VehicleType::setAccel().
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Sets a new value for maximum deceleration [m/s^2].
[in] | accel | The new deceleration in m/s^2 |
Reimplemented in MSCFModel_KraussOrig1, MSCFModel_SmartSK, and MSCFModel_Daniel1.
Definition at line 399 of file MSCFModel.h.
References MSCFModel::myDecel.
Referenced by MSCFModel_Rail::MSCFModel_Rail(), and TraCI_VehicleType::setDecel().
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Calculates the speed after a time t [0,TS] given the initial speed and the distance traveled in an interval of step length TS.
[in] | t | time in [0,TS] for which the speed shall be determined |
[in] | oldSpeed | speed before the last time step (referred to as t == 0) |
[in] | distance | covered |
Definition at line 444 of file MSCFModel.cpp.
References DIST2SPEED, MSGlobals::gSemiImplicitEulerUpdate, and TS.
Referenced by MSE2Collector::calculateTimeLossAndTimeOnDetector(), MSCFModel::getSpeedAfterMaxDecel(), MSInstantInductLoop::notifyMove(), and MSMeanData::MeanDataValues::notifyMove().
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Computes the vehicle's safe speed for approaching a non-moving obstacle (no dawdling)
[in] | veh | The vehicle (EGO) |
[in] | gap2pred | The (netto) distance to the the obstacle |
Implements MSCFModel.
Definition at line 87 of file MSCFModel_IDM.cpp.
References _v(), MSVehicle::getLane(), and MSLane::getVehicleMaxSpeed().
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The vehicle's maximum acceleration [m/s^2].
Definition at line 466 of file MSCFModel.h.
Referenced by MSCFModel_Kerner::_v(), MSCFModel_Wiedemann::_v(), _v(), MSCFModel_Krauss::dawdle(), MSCFModel_Daniel1::dawdle(), MSCFModel_SmartSK::dawdle(), MSCFModel_KraussOrig1::dawdle(), MSCFModel_KraussX::dawdleX(), MSCFModel_KraussX::duplicate(), MSCFModel_KraussPS::duplicate(), MSCFModel_Krauss::duplicate(), MSCFModel_Kerner::duplicate(), MSCFModel_PWag2009::duplicate(), MSCFModel_Wiedemann::duplicate(), duplicate(), MSCFModel_Daniel1::duplicate(), MSCFModel_SmartSK::duplicate(), MSCFModel_KraussOrig1::duplicate(), MSCFModel_PWag2009::followSpeed(), MSCFModel_Wiedemann::fullspeed(), MSCFModel::getMaxAccel(), interactionGap(), MSCFModel_SmartSK::MSCFModel_SmartSK(), MSCFModel::setMaxAccel(), and MSCFModel_PWag2009::stopSpeed().
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The IDMM adaptation factor beta.
Definition at line 168 of file MSCFModel_IDM.h.
Referenced by _v(), createVehicleVariables(), getModelID(), and moveHelper().
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The IDMM adaptation time tau.
Definition at line 171 of file MSCFModel_IDM.h.
Referenced by moveHelper().
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The vehicle's deceleration as expected by surrounding traffic [m/s^2].
Definition at line 473 of file MSCFModel.h.
Referenced by MSCFModel_KraussX::duplicate(), MSCFModel_Krauss::duplicate(), and MSCFModel_KraussOrig1::duplicate().
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The vehicle's maximum deceleration [m/s^2].
Definition at line 469 of file MSCFModel.h.
Referenced by MSCFModel_Kerner::_v(), MSCFModel_Wiedemann::_v(), MSCFModel_Daniel1::_vsafe(), MSCFModel_SmartSK::_vsafe(), MSCFModel::brakeGap(), MSCFModel_KraussX::duplicate(), MSCFModel_KraussPS::duplicate(), MSCFModel_Krauss::duplicate(), MSCFModel_Kerner::duplicate(), MSCFModel_PWag2009::duplicate(), MSCFModel_Wiedemann::duplicate(), duplicate(), MSCFModel_Daniel1::duplicate(), MSCFModel_SmartSK::duplicate(), MSCFModel_KraussOrig1::duplicate(), MSCFModel_Wiedemann::emergency(), MSCFModel_PWag2009::followSpeed(), MSCFModel_Rail::freeSpeed(), MSCFModel::freeSpeed(), MSCFModel::getMaxDecel(), MSCFModel::getSecureGap(), MSCFModel::getSpeedAfterMaxDecel(), interactionGap(), MSCFModel::interactionGap(), MSCFModel_Wiedemann::krauss_vsafe(), MSCFModel::maximumSafeFollowSpeed(), MSCFModel::maximumSafeStopSpeedBallistic(), MSCFModel::maximumSafeStopSpeedEuler(), MSCFModel_SmartSK::MSCFModel_SmartSK(), MSCFModel_Daniel1::setHeadwayTime(), MSCFModel_SmartSK::setHeadwayTime(), MSCFModel_KraussOrig1::setHeadwayTime(), MSCFModel_Daniel1::setMaxDecel(), MSCFModel_SmartSK::setMaxDecel(), MSCFModel_KraussOrig1::setMaxDecel(), MSCFModel::setMaxDecel(), MSCFModel_PWag2009::stopSpeed(), and MSCFModel_KraussOrig1::vsafe().
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The IDM delta exponent.
Definition at line 165 of file MSCFModel_IDM.h.
Referenced by _v(), duplicate(), and interactionGap().
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The vehicle's maximum emergency deceleration [m/s^2].
Definition at line 471 of file MSCFModel.h.
Referenced by MSCFModel_KraussX::duplicate(), MSCFModel_KraussPS::duplicate(), MSCFModel_Krauss::duplicate(), MSCFModel_Kerner::duplicate(), MSCFModel_PWag2009::duplicate(), MSCFModel_Wiedemann::duplicate(), duplicate(), MSCFModel_Daniel1::duplicate(), MSCFModel_SmartSK::duplicate(), MSCFModel_KraussOrig1::duplicate(), and MSCFModel::minNextSpeed().
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The driver's desired time headway (aka reaction time tau) [s].
Definition at line 476 of file MSCFModel.h.
Referenced by _v(), MSCFModel::brakeGap(), MSCFModel_SmartSK::createVehicleVariables(), MSCFModel_KraussX::duplicate(), MSCFModel_KraussPS::duplicate(), MSCFModel_Krauss::duplicate(), MSCFModel_Kerner::duplicate(), MSCFModel_PWag2009::duplicate(), duplicate(), MSCFModel_Daniel1::duplicate(), MSCFModel_SmartSK::duplicate(), MSCFModel_KraussOrig1::duplicate(), MSCFModel_PWag2009::followSpeed(), MSCFModel::getHeadwayTime(), MSCFModel::getSecureGap(), MSCFModel::interactionGap(), MSCFModel_Wiedemann::krauss_vsafe(), MSCFModel::maximumSafeFollowSpeed(), MSCFModel::maximumSafeStopSpeedBallistic(), MSCFModel::maximumSafeStopSpeedEuler(), MSCFModel_Daniel1::setHeadwayTime(), MSCFModel_SmartSK::setHeadwayTime(), MSCFModel_KraussOrig1::setHeadwayTime(), MSCFModel::setHeadwayTime(), MSCFModel_Daniel1::setMaxDecel(), MSCFModel_SmartSK::setMaxDecel(), MSCFModel_KraussOrig1::setMaxDecel(), MSCFModel_PWag2009::stopSpeed(), and MSCFModel_SmartSK::updateMyHeadway().
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The number of iterations in speed calculations.
Definition at line 174 of file MSCFModel_IDM.h.
Referenced by _v(), and duplicate().
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The type to which this model definition belongs to.
Definition at line 463 of file MSCFModel.h.
Referenced by MSCFModel_Wiedemann::_v(), _v(), MSCFModel::estimateSpeedAfterDistance(), MSCFModel::insertionStopSpeed(), MSCFModel_KraussPS::maxNextSpeed(), and MSCFModel::maxNextSpeed().