VISSIM 5.30-05 User Manual

Results
Node Evaluation
The results of a Node Evaluation are grouped by turning movements and
saved to a file with the extension *.KNA. Each turning relation is named
using the approximate compass directions (N / NE / E / SE / S / SW / W /
NW) of its first and last link (at the node boundary) with “North” direction
facing to the top of the VISSIM network. If a compass with a user-defined
North direction is active, any output direction data will refer to these settings,
cf. section 4.1.1. Example: "NE-S" is a movement entering from the North-
East and leaving to the South.
The two link numbers can be written to the evaluation file as well to avoid
ambiguity (two "parallel" turning relations with identical first and last links do
look identical). All results are aggregated over a user-defined time period for
time intervals with a user defined length.
The node evaluation file *.KNA contains the following data:
► File title
► Path and name of the input file (File)
► Simulation comment (Comment)
► Date and time of the evaluation (Date)
► Version no. with Service pack no. and Build no. (VISSIM)
► List of selected parameters with brief description
► Data block with a column for each selected parameter.
The data section contains for every time interval:
- one row per turning relation of each active node and
- an additional row for the node total (turning relation "All").
- an additional row per time interval with node number 0 containing the
system total.
The volume, average delay and standing time values as well as the number
of stops are determined by a delay segment created automatically as a
combination of new travel time measurements from all possible upstream
starting points (with user-defined distance, but not extending across an
upstream node boundary – unless there are more than four branches to side
roads between the two nodes) to the node exit point of the respective turning
relation. Also available is the number of passengers and the person delay by
vehicle class.
The queue length values are collected by a queue counter created automatically
and placed at the first signal head or priority rule stop line on the
link sequence of the turning relation. If there is no such cross section, the
queue counter is placed at the node entry point. The node evaluation places
a queue counter on every edge (movement) found inside the node. It is
placed at the position of the signal head or priority rule stop line that is the
closest one upstream to the node boundary on the respective edge.
Neither scheduled stops at PT stops nor stops in parking lots are counted as
stops. Neither passenger transfer times nor dwell times at STOP signs or the
time spent in parking lots are counted as delays (though time losses due to
User Manual © PTV AG 2011 541