Showing results of queue counters in lists

Queue counters must be defined in the network (Defining queue counters).

By default, the data for all vehicle classes is entered together. You can also show the data for certain vehicle classes separately in the evaluation (Configuring evaluations of the result attributes for lists).

Queue counters also detect reversing vehicles.

You can save the following data and data formats:

Output	ASCII file	MDB file	Attribute file from attribute list
Aggregated data	-	-
Raw data	-	-	-

Tip: You can also visualize queue lengths in the network editor (Graphic parameters for visualizing of queue lengths).

1. From the Evaluation menu, choose > Configuration > Result Attributes tab.

2. In the Queue counters row, select the option Collect data.

4. Click the More button.

The Queue counters window opens.

5. Define the settings for the desired output.

Element	Description
Begin	Define queue condition: A vehicle is in queue if its speed is less than the value v < that was entered for the Begin.
End	A vehicle remains in queue as long as its speed has not yet exceeded the value v > that was entered for the End.
max. clearance	Maximum net distance which can occur between two vehicles in queue. The queue is considered to be interrupted if there are larger gaps. Values between 10 and 20m are usual.
max. length	Maximum queue length. Longer queues may still occur. This attribute is useful if longer queues occur at the next node in the network, but the queues are to be evaluated separately for each intersection. When a large value, for example, 4 km, allows a long queue to form, the simulation speed decreases.
Consider adjacent lanes	Select this option to also take adjacent lanes of the previous link into account for calculation of the queue end. In the figure, the dashed line on the left indicates the position of the queue end: If this option is not selected, the adjacent lanes of the previous link are not taken into account for calculation of the queue end. In the figure, the dashed line indicates the position of the queue end:

6. Confirm with OK.

7. Start the simulation (Running a simulation).

8. If you wish, on the Evaluation menu, click > Result Lists > Queue Results.

Column	Description
QLen	Maximum distance between the traffic counter and the vehicle that meets the queue conditions defined. The queue length is specified as average queue length: With each time step, the current queue length is measured upstream by the queue counter and the arithmetic mean is thus calculated per time interval. This also includes zero values, if there is no vehicle that meets the queue condition. The queue length is the maximum distance between the traffic counter and the vehicle that meets the queue conditions defined.
QLenMax	Queue length (maximum): In each time step, the current queue length is measured upstream by the queue counter and the maximum is thus calculated per time interval.
QStops	Number of queue stops. A queue stop is where one vehicle that is directly upstream or within the queue length falls below the speed of the Begin attribute defined for the queue condition.

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