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).

You can save the following data and data formats:

Output ASCII file MDB file

Attribute file from attribute list

Aggregated data

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Raw data

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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.

3.  If desired, change the time and interval (Configuring evaluations of the result attributes for lists).

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 junction.

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, choose in the Evaluation menu Result Lists > Queue Results.

Result of the evaluation of queue counters
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.

Superordinate topic:

Performing evaluations

Related topics:

Overview of evaluations

Comparing evaluations of PTV Vissim and evaluations according to HBS

Performing environmental impact assessments

Showing results of measurements

Configuring evaluations of the result attributes for lists

Configuring evaluations for direct output

Showing evaluations in windows

Importing text file in a database after the simulation

Output options and results of individual evaluations

Visualizing evaluation results

Defining and generating measurements or editing allocated objects

Displaying OD pair data in lists

Evaluating pedestrian density and speed based on areas

Output attributes of area and ramp evaluation

Evaluating pedestrian areas with area measurements

Evaluating pedestrian travel time measurements

Saving pedestrian travel time measurements from OD data to a file

Saving pedestrian record to a file or database

Managing results

Saving vehicle record to a file or database

Saving lane change data to a file

Grid-based evaluation of pedestrian density and speed

Saving discharge record to a file

Evaluating nodes

Showing meso lane results in lists

Showing meso edges results in lists

Saving data about the convergence of the dynamic assignment to a file

Evaluating SC detector records

Saving SC green time distribution to a file

Evaluating signal changes

Saving managed lane data to a file

Vehicle network performance : Displaying network performance results (vehicles) in result lists

Pedestrian network performance: Displaying network performance results (pedestrians) in lists

Saving PT waiting time data to a file

Evaluating data collection measurements

Evaluating vehicle travel time measurements

Showing data from links in lists

Showing delay measurements in lists

Showing data about paths of dynamic assignment in lists

Saving vehicle input data to a file