Re: [sumo-user] all vehicles start driving synchronously

[ratzenmeier@xxxxxx]

Aaah yes, now it works! I set the setSpeed of the vehicles wrong (to early). Now it‘s set, when the traffic light changes. Also the speedMode=30 helped as well.
Thanks a lot Jakob!
Cheers.

> Gesendet: Mittwoch, 30. Januar 2019 um 15:39 Uhr
> Von: "Jakob Erdmann" <namdre.sumo@xxxxxxxxx>
> An: "Sumo project User discussions" <sumo-user@xxxxxxxxxxx>
> Betreff: Re: [sumo-user] all vehicles start driving synchronously
>
> When the car-following model is active, each vehicle only knows about the
> leader position from the previous step.
> When setting the speed via traci with speedMode = 30  (disregard safe
> speed) then these constraints are not relevant.
> However, the traci script needs to check the state of the traffic light and
> force all vehicles to drive when the light changes.
> 
> Am Mi., 30. Jan. 2019 um 15:18 Uhr schrieb <ratzenmeier@xxxxxx>:
> 
> > okey thanks. but you're saying, thats possible with TraCI and not possible
> > without? Don't I have the the same simulation step problem, that every
> > vehicle can only start driving one simulation step after the leader vehicle
> > has started?
> > If not, how can I ignore the car following constraints (only setting the
> > speedMode to 4/8? I think 0 is avoiding everything, even red light).
> > Greetings!
> >
> > *Gesendet:* Mittwoch, 30. Januar 2019 um 14:00 Uhr
> > *Von:* "Jakob Erdmann" <namdre.sumo@xxxxxxxxx>
> > *An:* "Sumo project User discussions" <sumo-user@xxxxxxxxxxx>
> > *Betreff:* Re: [sumo-user] all vehicles start driving synchronously
> > This is easy to do via TraCI by simpling setting the desired speed for all
> > vehicles and making them ignore car-following constraints.
> > It's neigh impossible to do without TraCI due to architectural constraints
> > (every vehicle can only start driving one simulation step after the leader
> > vehicle has started). You could set --step-length 0.001 to reduce the delay.
> >
> > regards,
> > Jakob
> >
> > Am Mi., 30. Jan. 2019 um 13:54 Uhr schrieb <ratzenmeier@xxxxxx>:
> >
> >> Hi all,
> >> quick question for my situation:
> >>
> >> I have a traffic light on red with 10 vehicles waiting. Is there a
> >> possibility that the vehicles start driving synchronously when the traffic
> >> light turns green?
> >> Every vehicle starts driving at the same moment, like if they were
> >> connected.
> >> Thanks!
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