VISSIM 5.30-05 User Manual

6 The Traffic Network
VISUM network object Notes
Node details (type, geometry, signalization,
orientations etc.) are neither exported nor
generated.
Links Are generated according to VISSIM edges
between the nodes.
Parallel edges: in VISSIM it is possible to have
several edges from one node to another node. In
case of several edges between the same two
nodes, only the shortest edge is exported.
First, the suitability of the VISSIM network
structure is checked. In case of unsuitable
modeling (e.g. parallel edges) a warning appears.
Details are listed in the Log Window.
● Number
● Type
● Length
● Number of lanes
● Capacity PrT
● v0 PrT
Starts with 1.
Has no correlation to the VISSIM link number or
any other VISSIM network element.
Is set to 0 for all links.
Has no correlation to the VISSIM link behavior
type.
Is calculated from the corresponding VISSIM edge.
Is set the to minimum number of lanes of all
VISSIM links/connectors corresponding to the
edge.
NumberVehicles/hour = Number of lanes • 900
Capacity = NumVeh/h • (SimPeriod/3600)
SimPeriod = simulation period, cf. Simulation
parameters
Corresponds to “vehicles per simulation period”.
Is calculated from the speed distributions of
VISSIM origin parking lots and desired speed
decisions on the edge.
Speed for one distribution: 85th percentile.
► For parking lots, only the default speed
distribution is considered.
► For speed decisions, the average of all given
distributions is calculated (85th percentile of
each distribution).
Turns Are generated from the VISSIM edges inside the
nodes. A VISUM turn is open if the corresponding
VISSIM edge exists. Turn capacity is set to 99999
for all. U-turns get type 4, other turns get type 0.
Zones Are generated according to VISSIM zones. The
180 VISSIM 5.30-05 © PTV AG 2011