Re: [sumo-user] travel time

[Jakob Erdmann <namdre.sumo@xxxxxxxxxxxxxx>]

Hello,

1) the travel time of an edge usually equals it's length divided by it's speed limit. The actual speed of any one vehicle may differ  from the speed limit and thus the travel time may be different as well. See http://sumo.dlr.de/wiki/Simulation/VehicleSpeed

2) the 'stored travel time' of a lane you can see in sumo-gui, is a way to customized the travel time values that are used when re-routing vehicles within the simulation (http://sumo.dlr.de/wiki/Simulation/Routing).

3) see http://sumo.dlr.de/wiki/Demand/Shortest_or_Optimal_Path_Routing#Custom_edge_weights and

http://sumo.dlr.de/wiki/SUMO#Format_of_additional_files

regards,

Jakob

2017-12-05 15:01 GMT+01:00 杜 伟强 <ishadowprince@xxxxxxxxxxx>:

Hello :

I’m getting trouble in travel time.

1 .what is the definition of travel time

2. I see travel these words in user doc

       Usually, each road within a simulation has an assigned travel time based on its length and allowed speed. 

 

but when I right click show parameter in sumo-gui,every lane’s travel time is -1

 

3. how to set travel time in .xml file? I find this parameter is set in weight file. But maybe weight file is generate by additional file. How to generate weight file. Is there an example file? What is the relationship between weight file and additional file

 

I was bothered by these problem so long time.

Any one can help me ?

Thank you so much

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