Dear SUMO developers,
I write to report a problem I am experimenting with the class moveToXY from
traci._vehicle <http://www.sumo.dlr.de/pydoc/traci._vehicle.html> under
SUMO 0.27.1. The problem is that sometimes the vehicle is moved to the
wrong lane (or even road) when the arguments (xyposition, angle) should
result in a different situation. To illustrate this, I attach an
explanatory figure, and describe the situation here:
- I use the traci command *traci.vehicle.moveToXY(hostID,
EdgeIDPosition[0], 0, Positionxy[0], Positionxy[1], curAngle, keepRoute=0)*,
where:
- *hostID* is the ID of the desired vehicle.
- *EdgeIDPosition[0]* is the ID of the identified edge using the
class traci.simulation.convertRoad and lat/lon coordinates.
- *Positionxy* is a 2D vector with the calculated XY position from
the lat/lot coordinates.
- *curAngle* is the desired vehicle's angle.
- I then compare the angle of section of the edge in which the vehicle
has been moved at with the vehicle's angle, and if they are similar in a
range of +/- 45 degrees I consider a fair map-matching and change the
vehicle's colour to green; otherwise I change the colour to red.
Thus, as you can see from the attached figure, sometimes (I'd say, many
times) the map-matching just does not work, and the vehicle is moved to the
wrong lane. One easy way to check the faulty map-matching is by looking at
the provided GPS position (marked with a POI) and the vehicle's orientation
(given by the desired vehicle's angle I provide), this latter opposed to
the direction of the lane at which the vehicle is wrongly map-matched.
So, I hope you can help me out in solving this problem (in case I am doing
something wrong, which I really doubt), or in fixing this bug in the next
SUMO version.
Many thanks for your valuable help.
Best regards, Rodrigo.
--
Rodrigo Hernán Ordóñez-Hurtado, PhD
Research Fellow
University College Dublin
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