vs | plus calculates the transitions on the basis of the display elements using the intergreen and offset times. For an offset to be controlled according to the offset time matrix, it is a condition that the corresponding traffic streams receive an on or off command from the vs | plus control logic.
The offset times can be entered symmetrically or asymmetrically.
- With a symmetrical input, the specified offsets are maintained exactly (fixed offset). The sum of the offset decisive + dependent always equals 0.
Figure 37: Example of symmetrical offsets
- In the case of an asymmetrical input, the offsets may be greater due to the intergreen times. This means, for example, that a pedestrian may be given the green light earlier than a parallel motor vehicle traffic if his intergreen times are shorter than those of the parallel motor vehicle traffic. On the other hand, a delay may also be longer than specified in the offset time matrix.
No interlocks are defined with offsets. If a switch-on command is issued to a dependent display element by vs | plus after a decisive display element has turned green, the dependent element will still switch on. If this is not permitted for traffic reasons, an interlock must also be defined.
|
Display |
Identifier |
Values |
Description |
|
Name |
Left column: decisive display element |
|
The decisive display element does what it wants. |
|
|
|
|
|
|
|
|
List |
All display elements. |
|
Name |
Top line: dependent display element |
|
The dependent display element is switched off in case of a simultaneous on command depending on the decisive one. |
|
|
|
|
|
|
|
|
List |
All display elements. |
|
Time |
Offset time in seconds |
|
With a symmetrical input, the specified offsets are adhered to exactly (fixed offset). With an asymmetrical input, the offsets may be larger due to the intergreen times. This means, for example, that a pedestrian may be switched to green earlier with a start offset to a parallel motor vehicle traffic, if his intermediate times are smaller than those of the parallel motor vehicle traffic. On the other hand, an overrun may also be larger than specified in the offset time matrix. |
|
|
|
|
|
|
|
|
[Empty] |
No offset time. |
|
|
|
-255 .. +255 |
Offset time in seconds. |