Hi Jianlin,

Am 07.10.2014 um 21:14 schrieb Luan, Jianlin:
> I recently tried to use the Traci function 
> 'traci.edge.getLastStepOccupancy(edgeID)' to measure if
> the edge is congested.
> But the output of the function is a percentage, which confuses me.
> Anyone know what is the definition of the occupancy used in this function?

The occupancy here is defined as the ratio of the sum of vehicle lengths
on the edge divided by the edge length (sum of the lengths of all
lanes). Vehicles which are partly on the edge count only with the part
which is on it.

> BTW, is there any other traci function that can be used to measure if an edge 
> is congested?

It depends on your definition of congestion. We usually use average
speed or occupancy.

Best regards,
Michael


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