VISSIM 5.30-05 User Manual

[LANE
CHANGE]
Network Coding
● With LANE CLOSURE... one or more lanes of the
connector can be closed to any vehicle class. A
lane closure affects the vehicle behavior as
follows:
- Vehicles of classes to which the lane is
closed will never move from an adjacent lane
to that lane (even if they have to! – e.g.
according to a routing decision).
- If all lanes of a connector are closed to a
vehicle class, vehicles of that class will still
travel on that connector but will not change
lanes.
● The Emergency Stop and Lane change parameters are used to model
the lane change behavior for cars following their Routes.
- Emergency Stop defines the last possible position for a vehicle to
change lanes. It is measured upstream from the start of the
connector. The min. emergency stop distance is 5m. If a vehicle
needs to change more than one lane, an additional 5m is added for
each additional lane. If the current lane has an odd no., an additional
2.5m is added to the total emergency stop distance. This is to avoid a
conflict because of identical locations when two vehicles on adjacent
lanes mutually want to change lanes.
Example: A vehicle on lane 1 needs to change to lane 4 in order to
continue on its route. The emergency stop distance in the subsequent
connector is defined as 10m. Then the relevant emergency
stop distance for lane 1 is: 10+5+5+2.5 = 22.5m. For lane 2 it would
be 10+5=15m and for lane 3 10+2.5=12.5m.
The emergency stop position (in contrast to the distance) is then
computed as the difference of the link coordinate, where the
connector starts, minus the emergency stop distance. From the result
only the integer amount is taken (no decimals).
Example: If the connector starts at coordinate 67.2 and the emergency
stop distance is 12.5m, the emergency stop position results in
67.2-12.5=54.7 -> 54m.
- Lane change defines the distance at which vehicles will begin to
attempt to change lanes (e.g. distance of signpost prior to a junction).
- per lane: If this option is active, the given lane change value will be
multiplied by the number of lanes the vehicle has to change to reach
the connector.
Example: To reach a connector starting only from lane 1 with lane
change distance 200 m per lane, a vehicle on lane 3 starts to look for
a gap to change lanes from 400 m upstream of the start of the
connector.
● Desired Direction: If vehicles are traveling on Routes, this option is of just
a viewing effect during a simulation run:
User Manual © PTV AG 2011 195