Re: [sumo-user] VariableSpeedSigns in TraCI

[Sasan Amini <aminissn@xxxxxxxxx>]

To be sure, using the generic functions getParameter() or
setParameter() won't work in this particular case? or am I using them
wrong?

On Sun, Jul 2, 2023 at 10:49 PM Sasan Amini <aminissn@xxxxxxxxx> wrote:
>
> That seems to be a bit more complicated than I thought.
> Regarding the workaround, I guess using VSS is more practical because
> it affects all the downstream lanes (overwrites the vehicle maxSpeed)
> while using traci.lane.setMaxSpeed would only change the speed limit
> in the lane where the vss is defined. Moreover, it takes the fun away
> from the SUMO-GUI by not changing the VSS icons.
>
> On Sun, Jul 2, 2023 at 10:38 PM Jakob Erdmann <namdre.sumo@xxxxxxxxx> wrote:
> >
> > Adding a new traci function requires touching multiple parts of the code. As an example, see https://github.com/eclipse/sumo/issues/12568
> > However, you can achieve the effect of a VSS by calling traci.lane.setMaxSpeed
> >
> > Am Fr., 30. Juni 2023 um 22:20 Uhr schrieb Sasan Amini <aminissn@xxxxxxxxx>:
> >>
> >> Dear all,
> >> I am trying to implement dynamic traffic control on a freeway using
> >> variable speed signs. I noticed that the TraCI functions are missing
> >> for vss so I tried to use the get or set parameter function, which
> >> didn't work out. I also tried to create the traci functions myself as
> >> follows, but they also have no effect. What is the right way to add
> >> such functions to traci?
> >>
> >> Thanks,
> >> Sasan
> >>
> >> def getSpeed(self,vssID):
> >> return self._getUniversal(tc.CMD_GET_VARIABLESPEEDSIGN_VARIABLE,'speed',vssID)
> >> """getSpeed(string)
> >>
> >> gets the speed in m/s for the named variable speed sign within the last step.
> >> """
> >> def setSpeed(self, vssID, speed):
> >> """setSpeed(string, double)
> >>
> >> sets the speed in m/s for the named variable speed sign.
> >> """
> >> self._setCmd(tc.CMD_SET_VARIABLESPEEDSIGN_VARIABLE,'speed',vssID,speed)
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