1). If the vehicle has not yet departed or if the route of the vehicle is
disconnected, the magic value -1001 is returned. Otherwise the distance
should be positive
2). in the vehicle definition, set arrivalSpeed=0. You could send the
maximum deceleration to a lower value to get a slower approach (can be done
via TraCI as wel). Alternatively, you could use the 'slowDown' command to
set a speed time line
3). The step length defaults to 1s but can be configured using the sumo
--step-length parameter. Some functions read/return time in ms though (i.e.
simulation.getCurrentTime). Beware.
2016-10-18 3:28 GMT+02:00 Ankur Sarker <asar...@g.clemson.edu>:
> Hi,
>
> I am trying to change velocities of vehicles using TraCI. I have some
> queries:
>
> 1. In my simulation, I am getting negative value from getDistance()
> function. What would be the possible reason? Followings are my code:
> ------------------------------------------------------------
> ------------------------
> vehicles = traci.vehicle.getIDList()
> for word in vehicles:
> if word == "kang":
> distance = traci.vehicle.getDistance("kang")
> vel1 = traci.vehicle.getSpeed("kang")
> print distance
> ------------------------------------------------------------
> --------------------------
> 2. How to let the vehicles stop at the final destination gradually?
>
> 3. If I use the TraCI in python, what is the simulation step in time? 1
> second? or something else?
> ------------------------------------------------------------
> -----------------
> step = 0
> while traci.simulation.getMinExpectedNumber() > 0:
> traci.simulationStep()
> step+=1
> ------------------------------------------------------------
> --------------------
>
> Thanks for your time!
> A. Sarker
> ------------------------------------------------------------
> ------------------
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