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Re: [sumo-user] waiting time and average speed
The default 'accel' parameter is the same for all models (and this is reflected in the documentation).
However, the driving dynamics still differ between the models:
- Krauss makes full use of it's default accel and decel values in almost all traffic situations
- ACC/CACC sometimes accelerate with less than their accel value (thereby achieving smoother trajectories)

Am Di., 1. Feb. 2022 um 04:08 Uhr schrieb Royal Bhandari <royalbhandari6@xxxxxxxxx>:
Thanks, Jakob for the explanation. 

To check my understanding, the default acceleration of the Krauss model is higher than that of ACC and CACC? Is there documentation listing this?

Regards,
Royal



On Mon, Jan 31, 2022 at 4:46 AM Jakob Erdmann <namdre.sumo@xxxxxxxxx> wrote:
The outputs are probably "valid" for the particular models but whether the ACC/ CACC models conform to the behavior of any particular real life fleet cannot be answered without prior calibration. Please also refer to my previous answer (https://www.eclipse.org/lists/sumo-user/msg11040.html).
Obviously, the same holds for the default Krauss model which may differ from the driving behavior of your human fleet depending on the model parameters (and their distribution within the fleet).
The metric of 'waiting time' is sensitive to the speed threshold to determine 'halting'. Thus, the strong accelerations performed by the Krauss model may have an outsized impact on this metric compared to vehicles that are "slower" to start.

regards,
Jakob

Am So., 30. Jan. 2022 um 08:25 Uhr schrieb Royal Bhandari <royalbhandari6@xxxxxxxxx>:
Hello,

I am using average speed and waiting time per vehicle as my urban traffic performance index. I am comparing CACC car-following model and ACC car following models with default krauss model. I was expecting that the CACC model will have lower waiting time and higher speed in comparison to ACC and Krauss model in a congested network. This is true for speed but not for the waiting time. Am I missing something here or are the outputs which I obtained valid?

Regards,
Royal
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