Saving discharge record to a file

The discharge record shows the time intervals between vehicles driving away from signal heads. You can use it for purposes such as determining time needs for your SC or calibrating actual measured saturation flow values. Links, vehicle inputs and signal heads must be defined in the network.

In order to determine meaningful time needs, the measured flows should be saturated. You should therefore ensure that the number of vehicles queued behind the stop line is at least as many as can pass during a green phase.

You can output the following data and data formats:

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

Aggregated data

Raw data

*.dis

Defining evaluation of the discharge record results

1. Make sure that the attribute Discharge record active is selected in the attributes of the desired signal head.

2. From the Evaluation menu, choose > Configuration > Direct Output tab.

3. In the Discharge record row, select the option Write to file.

5. Confirm with OK.

A *.dis file is saved.

Result of discharge record evaluation

A *.dis discharge record may contain the following data:

Element	Description
File	Path and name of network file
Comment	Comment on simulation
Date	Time of evaluation
PTV Vissim	Version number, service pack number, build number
Table	Discharge at SC with its number, signal group with its number, and in parentheses data collection point with number
Data block	One line for each SC cycle Column 1: Simulation seconds at start of green time Column 2: Time difference between start of green time and arrival of first vehicle at measuring point Column 3: Time need: time gap between the front end of vehicle 1 (the first vehicle in the queue) and the front end of vehicle 2 All other columns contain the time needs of all subsequent vehicles according to their positions in the queue. The end of the green phase is shown by the position of the parentheses. The numbers in parentheses show: the number of vehicles passing the measuring point during the green phase the average time needs of these vehicles. Both values are determined without taking vehicle 1 into account, because its time needs depend on the distance between the stop line and the measuring point. Values after the parentheses were measured for vehicles that crossed the stop line after the green phase (during yellow or red). Fourth-to-last line: vehicle position number in the queue (index number) for each cycle Third-to-last line: average time need for the vehicle position concerned Next-to-last line: measured number of vehicles at this position. If saturation is not present for some green phases, smaller numbers are measured for higher index numbers. Last line: total number of vehicles (except those in the first position) and their time needs (measured over all cycles).

File

Path and name of network file

Comment

Comment on simulation

Date

Time of evaluation

PTV Vissim

Version number, service pack number, build number

Table

Discharge at SC with its number, signal group with its number, and in parentheses data collection point with number

Data block

One line for each SC cycle

Column 1: Simulation seconds at start of green time
Column 2: Time difference between start of green time and arrival of first vehicle at measuring point
Column 3: Time need: time gap between the front end of vehicle 1 (the first vehicle in the queue) and the front end of vehicle 2
All other columns contain the time needs of all subsequent vehicles according to their positions in the queue.
The end of the green phase is shown by the position of the parentheses. The numbers in parentheses show:
the number of vehicles passing the measuring point during the green phase
the average time needs of these vehicles. Both values are determined without taking vehicle 1 into account, because its time needs depend on the distance between the stop line and the measuring point.
Values after the parentheses were measured for vehicles that crossed the stop line after the green phase (during yellow or red).
Fourth-to-last line: vehicle position number in the queue (index number) for each cycle
Third-to-last line: average time need for the vehicle position concerned
Next-to-last line: measured number of vehicles at this position. If saturation is not present for some green phases, smaller numbers are measured for higher index numbers.
Last line: total number of vehicles (except those in the first position) and their time needs (measured over all cycles).

Discharge record example: file *.dis

Discharge record

File:    C:\Users\Public\Documents\PTV Vision\PTV Vissim 11\Examples Demo\3D - Complex Intersection Karlsruhe.DE\Karlsruhe 3D.inpx

Comment:  Karlsruhe 3D example

Date: Monday, 19 January 2019 10:20:30

PTV Vissim 11.00-00* [77950]

Discharge at SC 619, signal group 14, signal head 3

1   (0: 0.0)

80   1.11   1.16   (1: 1.16)

170   1.01   (0: 0.0)

260   (0: 0.0)

350   0.95   0.70   (1: 0.70)

440   1.07   1.31   (1: 1.31)

530   1.09   (0: 0.0)

620   1.05   (0: 0.0)

710   1.17   (0: 0.0)

800   1.15   1.45   (1: 1.45)

890   1.09   (0: 0.0)

980   1.11   (0: 0.0)

1070   (0: 0.0)

1160   0.99   0.25   0.88   (2: 0.56)

1250   (0: 0.0)

1340   1.07   (0: 0.0)

1430   (0: 0.0)

1520   6.95   (0: 0.0)

1610   1.18   1.35   (1: 1.35)

1700   1.18   0.98   (1: 0.98)

1790   1.07   (0: 0.0)

1880   1.06   0.05   1.00   0.11   1.05   1.18   (5: 0.68)

1970   1.11   (0: 0.0)

2060   1.06   1.09   (1: 1.09)

2150   1.08   (0: 0.0)

2240   1.10   1.10   1.08   3.49   (3: 1.89)

2330   1.04   (0: 0.0)

2420   1.09   0.99   (1: 0.99)

2510   1.04   (0: 0.0)

2600   1.13   1.11   (1: 1.11)

2690   (0: 0.0)

2780   (0: 0.0)

2870   1.07   (0: 0.0)

2960   (0: 0.0)

3050   (0: 0.0)

3140   (0: 0.0)

3230   (0: 0.0)

3320   1.11   0.00   1.09   0.18   0.75   0.83   (5: 0.57)

3410   1.06   (0: 0.0)

3500   (0: 0.0)

3590   (0: 0.0)

3680   1.17   (0: 0.0)

3770   1.07   1.47   (1: 1.47)

3860   1.22   (0: 0.0)

3950   1.03   6.26   (1: 6.26)

4040   1.13   (0: 0.0)

4130   1.19   1.16

-----      1      2      3      4      5      6

-----   1.26   1.28   1.01   1.26   0.90   1.00

-----     34     16      4      3      2      2

[27: 1.19]