VISSIM 5.30-05 User Manual

6.7.4.9 Detecting Inconsistent Planning Scenarios
Signal Controllers
Caused by the interdependencies between the individual data objects,
changes to the properties of an object may lead to inconsistencies in objects
that depend on the modified object. Those inconsistencies are explicitly
permitted to prevent the operator from any restrictions. To support the
operator’s efforts for consistent planning, the following checks and
mechanisms have been implemented though:
► Changes to intergreens may cause intergreen violations in the
associated signal programs and/or interstages. Those violations are
highlighted graphically in the object data display.
► Adding further conflicts may
result in invalid stages. Cells
with conflicting green are highlighted
red in the table that can
be called via Stage assignments
in the navigator.
► Changes to stages may lead to invalid interstages due to the new initial
state (or target state) of a signal group. The following two cases have to
be distinguished:
1. The associated interstages will remain consistent, if the state of a
signal group is changed from either green or red to not relevant.
Since the interstage is still consistent, another selection of the edited
stage will not start a recalculation of the interstage. To force
recalculation, select any other stage first and select the edited stage
then in this case.
User Manual © PTV AG 2011 329