40 #define INVALID_SPEED 299792458 + 1 // nothing can go faster than the speed of light! 72 MSCFModel(
const MSVehicleType* vtype,
double accel,
double decel,
double emergencyDecel,
double apparentDecel,
double headwayTime);
103 double maxSpeed,
const bool onInsertion =
false)
const;
115 virtual double followSpeed(
const MSVehicle*
const veh,
double speed,
double gap2pred,
double predSpeed,
double predMaxDecel)
const = 0;
142 virtual double stopSpeed(
const MSVehicle*
const veh,
const double speed,
double gap)
const = 0;
267 static double brakeGap(
const double speed,
const double decel,
const double headwayTime);
269 static double freeSpeed(
const double currentSpeed,
const double decel,
const double dist,
const double maxSpeed,
const bool onInsertion);
276 inline double getSecureGap(
const double speed,
const double leaderSpeed,
const double leaderMaxDecel)
const {
292 const double followDecel =
MIN2(
myDecel, leaderMaxDecel);
355 static double passingTime(
const double lastPos,
const double passedPos,
const double currentPos,
const double lastSpeed,
const double currentSpeed);
370 static double speedAfterTime(
const double t,
const double oldSpeed,
const double dist);
428 double maximumSafeFollowSpeed(
double gap,
double egoSpeed,
double predSpeed,
double predMaxDecel,
bool onInsertion =
false)
const;
437 double maximumSafeStopSpeed(
double gap,
double currentSpeed,
bool onInsertion =
false,
double headway = -1)
const;
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 i...
double maximumSafeFollowSpeed(double gap, double egoSpeed, double predSpeed, double predMaxDecel, bool onInsertion=false) const
Returns the maximum safe velocity for following the given leader.
double brakeGap(const double speed) const
Returns the distance the vehicle needs to halt including driver's reaction time, assuming that during...
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.
Representation of a vehicle in the micro simulation.
const MSVehicleType * myType
The type to which this model definition belongs to.
double myApparentDecel
The vehicle's deceleration as expected by surrounding traffic [m/s^2].
virtual ~VehicleVariables()
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 ste...
virtual double followSpeed(const MSVehicle *const veh, double speed, double gap2pred, double predSpeed, double predMaxDecel) const =0
Computes the vehicle's follow speed (no dawdling)
virtual MSCFModel * duplicate(const MSVehicleType *vtype) const =0
Duplicates the car-following model.
virtual double getImperfection() const
Get the driver's imperfection.
The car-following model abstraction.
virtual VehicleVariables * createVehicleVariables() const
Returns model specific values which are stored inside a vehicle and must be used with casting...
virtual double maxNextSpeed(double speed, const MSVehicle *const veh) const
Returns the maximum speed given the current speed.
double myAccel
The vehicle's maximum acceleration [m/s^2].
virtual double moveHelper(MSVehicle *const veh, double vPos) const
Applies interaction with stops and lane changing model influences.
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...
#define UNUSED_PARAMETER(x)
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...
The car-following model and parameter.
double getMaxAccel() const
Get the vehicle type's maximum acceleration [m/s^2].
virtual int getModelID() const =0
Returns the model's ID; the XML-Tag number is used.
virtual void setHeadwayTime(double headwayTime)
Sets a new value for driver reaction time [s].
virtual double interactionGap(const MSVehicle *const veh, double vL) const
Returns the maximum gap at which an interaction between both vehicles occurs.
virtual double getSpeedAfterMaxDecel(double v) const
Returns the velocity after maximum deceleration.
double getMaxDecel() const
Get the vehicle type's maximum deceleration [m/s^2].
double maximumSafeStopSpeed(double gap, double currentSpeed, bool onInsertion=false, double headway=-1) const
Returns the maximum next velocity for stopping within gap.
double getMinimalArrivalSpeedEuler(double dist, double currentSpeed) const
Computes the minimal possible arrival speed after covering a given distance for Euler update...
double myDecel
The vehicle's maximum deceleration [m/s^2].
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 accele...
virtual ~MSCFModel()
Destructor.
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 updat...
double maximumSafeStopSpeedEuler(double gap) const
Returns the maximum next velocity for stopping within gap when using the semi-implicit Euler update...
virtual void setMaxDecel(double decel)
Sets a new value for maximum deceleration [m/s^2].
virtual void setMaxAccel(double accel)
Sets a new value for maximum acceleration [m/s^2].
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...
virtual double getHeadwayTime() const
Get the driver's reaction time [s].
virtual void setImperfection(double imperfection)
Sets a new value for driver imperfection.
double myEmergencyDecel
The vehicle's maximum emergency deceleration [m/s^2].
double getMinimalArrivalSpeed(double dist, double currentSpeed) const
Computes the minimal possible arrival speed after covering a given distance.
SUMOTime getMinimalArrivalTime(double dist, double currentSpeed, double arrivalSpeed) const
Computes the minimal time needed to cover a distance given the desired speed at arrival.
MSCFModel(const MSVehicleType *vtype, double accel, double decel, double emergencyDecel, double apparentDecel, double headwayTime)
Constructor.
double estimateSpeedAfterDistance(const double dist, const double v, const double accel) const
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)
double myHeadwayTime
The driver's desired time headway (aka reaction time tau) [s].
Representation of a lane in the micro simulation.
virtual double stopSpeed(const MSVehicle *const veh, const double speed, double gap) const =0
Computes the vehicle's safe speed for approaching a non-moving obstacle (no dawdling) ...