To set an exact deceleration, compute the resulting speed and then use
vehicle.setSpeed or vehicle.slowDown.
Possibly, you have to override safety features to achieve this. See
https://sumo.dlr.de/wiki/TraCI/Change_Vehicle_State#speed_mode_.280xb3.29

regards,
Jakob

Am Mo., 12. Aug. 2019 um 17:17 Uhr schrieb <[email protected]>:

> Hey everyone,
> I am doing a research on the safety improvement of the ACC algorithm.
> Among them, I need to set a specific deceleration(eg. -3m/s^2) for the
> vehicle at a specific time. However, I did not find a way to set the
> deceleration for the vehicle in Traci's documentation. In the
> documentation, I found setDecel means Sets the vehicle's wished maximum
> deceleration to the given value. Is there a function in Traci that sets the
> deceleration instead of the maximum desired deceleration for a vehice at
> next simulation step?
> Best regards,
> Xianming
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