Hi,

In the generated output file for the traffic measures for each edge/lane 
(https://sumo.dlr.de/docs/Simulation/Output/Lane-_or_Edge-based_Traffic_Measures.html)
 
the definition of estimated mean speed is given as "This is an average over 
time and space (space-mean-speed), rather than a local average over the 
vehicles (time-mean-speed). Since slow vehicles spend more time on the edge 
they will have a proportionally bigger influence on average speed. “

How the term “space” is defined ? Could you please specify how exactly the mean 
speed has been estimated?

I understand that the generated speed does not take into account the mean speed 
value over all the vehicles per second counted on the edge  and finally 
averaged over the whole simulation period, right ? 

Thank you.
Regards,
Natalia


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