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Re: [sumo-user] HBEFA3 emissions behavior for decelerating vehicles

Hi Andres,
the reason is probably that we do not have data for negative
accelerations in the HBEFA case and in our experiments the results came
closer to reality with this setting. I think it compensates a little for
another bug where the emissions with v=0 are already to high. But yes
this is a bug in the model, see https://github.com/DLR-TS/sumo/issues/2110

Best regards,
Michael

Am 23.01.2018 um 17:37 schrieb Andres Felipe Acosta Gil:
> Dear SUMO community.
> 
> We would like to know: why the emissions of decelerating vehicles are
> zero instead of something like the emission value of a stopped vehicle?
> We noted this behavior in src/utils/emissions/HelpersHBEFA3.h, around
> the line 108. We think this value could be f[0]/scale instead of 0.
> 
> if (c == HBEFA3_BASE || a < 0. || e == PollutantsInterface::ELEC) {
>     return 0.;
> }
> 
> Best Regards.
> 
> -- 
> Andres Felipe Acosta Gil, M.Eng.
> Software developer
> Universidad Nacional de Colombia - sede Medellín
> Facultad de Minas
> Cra 80 No 65-223, Bloque M3, Oficina 209
> Tel: +57 (4) 4255092
> Institutional e-mail: afacostag@xxxxxxxxxxx <mailto:afacostag@xxxxxxxxxxx>
> 
> 
> 
> 
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