VISSIM 5.30-05 User Manual

6 The Traffic Network
they will still work though the data folder might have been renamed or
copied.
For a signal control of the External type, the number of the signal program
can also be entered while the simulation is running. VISSIM automatically
switches to the new signal program at the next switch point.
With external controller DLLs, the current cycle second (determined by
VISSIM for fixed cycle times) is computed on the basis of the start of the
first cycle at midnight. If 00:00:00 is set as start time, this will not make a
diference.
6.7.3.10 Fixed time control
The external SC type Fixed time control is a fixed time control strategy. The
Signal Control Editor replaces the original tabular data supply method for
fixed time controls. The graphical signal program editor allows for changes to
the signal timing plan. Due to the particular VISSIM license, the signal
program editor’s add-on VISSIG provides additional functionality beyond the
VISSIM standard version.
For Fixed time control, significant changes have been performed and the
functionality has been extended by various new features, by the VISSIG
add-on, for example. Please refer to section 6.7.4 for the comprehensive
description.
For stage-based fixed time controllers, the greentime optimization can be
performed, cf. section 6.7.3.11:
► For the selected fixed time controller via the button START OPTIMIZATION
in the Signal control window – [FIXED TIME] tab.
► For all fixed time based controllers in the network via menu SIGNAL
CONTROL - OPTIMIZATION OF ALL FIXED TIME CONTROLLERS.
Definition
Via SIGNAL CONTROL – EDIT CONTROLLERS... open the Signal Control window
and create a signal control with fixed time control.
By right-click in the list you can call a context menu. The context menu
provides the following functions:
► NEW adds another SC to the list
► DUPLICATE creates a new SC with the properties of the selected one but a
new SC no.
► DELETE removes the selected entry from the list
296 VISSIM 5.30-05 © PTV AG 2011