Hi Daniel,
What happens when there is no information about the slope?
I have made some tests with one network with increases and one without, as well as two HBEFA emission models.
The results show that there is very little difference on average.
With elevation: 22.319 g
without elevation: 22.495 g
With elevation: 6.374 g
without elevation: 6.522 g
I would expect consumption to be higher with elevation than without.
Does this mean that the information about the slope does not contribute to the calculation of the consumption, since it replaces the influence of acceleration?
Best regards
Florian
Gesendet: Montag, 14. August 2023 um 10:54 Uhr
Von: Daniel.Krajzewicz@xxxxxx
An: sumo-user@xxxxxxxxxxx
Cc: florian.schnepf97@xxxxxx
Betreff: AW: [sumo-user] HBEFA Emission Model
Hello Florian,
well, no.
HBEFA has the information about the influence of slope on emissions. On the other hand, as HBEFA uses (macroscopic) traffic states, it does not use (microscopic) acceleration.
So, when deriving emissions from HBEFA, we used the slope information for replacing the missing influence of accelerations.
Sincerely,
Daniel
Von: sumo-user <sumo-user-bounces@xxxxxxxxxxx> Im Auftrag von Florian Schnepf via sumo-user
Gesendet: Montag, 14. August 2023 10:51
An: sumo-user@xxxxxxxxxxx
Cc: Florian Schnepf <florian.schnepf97@xxxxxx>
Betreff: [sumo-user] HBEFA Emission Model
I read in a paper about the emission models that the HBEFA model does not depend on acceleration and therefore the slope is used for compensation.
I do not understand how this is meant. Can someone explain to me how this was implemented?
