Hello,
the proposed method would mostly work except for edges that are very short
(vehicles might pass that edge in a single simulation step without showing
up in getLastStepVehicleIDs).
If you do not need the data while the simulation is running you could
post-process the vehicle route output in FILE using options
--vehroute-output FILE --vehroute-output.exit-times
This gives you the time each vehicle exited for each edge in the route.

regards,
Jakob



2018-06-28 22:02 GMT+02:00 Shekar V <[email protected]>:

> Hello
>
> Is there an efficient way to keep track of vehicles entering and exiting
> an edge. I'd like to keep track of the vehicle ID, when they enter an edge
> and when they exit for the entire network.
>
> My first thought is to use Traci to get edge.getLastStepVehicleIDs() for
> consecutive time steps. Convert them to sets and take the difference
> between them.
>
> Thanks
>
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