VISSIM 5.30-05 User Manual

7 Simulation of Pedestrians
The partial routing decision may be defined for specific pedestrian classes.
If the decision area is a queuing area with an additional dwell time
distribution defined, then all pedestrians of other classes than the specified
ones will be affected by the queue as well, if they are currently on a route
which has an intermediate point on the “Service point selection” decision
area. Then they will wait in the same queue but will not continue to any
service point. Instead, they will then continue on their original route.
If the decision area is a queuing area without a dwell time distribution, then
all such pedestrians will queue in the queue only until they reach the
decision area and then continue immediately on their original route.
Pedestrians who are not affected by the partial routing decision because
their route does not have an intermediate point on the destination area of
the partial routes are treated the same way, i.e. they can still be part of the
queue if there is a dwell time distribution assigned to the decision area or if
the queue extends outside of the decision area.
Summary: All pedestrians on a route with an intermediate point on the
decision area are affected by the queue outside of the area. Inside, they are
only affected if there is a dwell time assigned or if they will select one of the
service points (i.e. if they belong to one of the specified pedestrian classes
and their original route has an intermediate point on the destination area of
the partial routes.
► If the decision area is no queuing area, each pedestrian (of the
specified class) entering the decision area
1. waits until his waiting time at the decision area is over (if a waiting
time distribution is defined there),
2. continues to the best queue if at least one service point has no more
than n pedestrians queuing. If all queues are full, it continues with its
original route (ignoring all service points).
► The best queue is calculated as follows:
- Select from all queues where no more than n pedestrians are
queuing.
- If more than one such queue exists, choose the one with the smallest
number of pedestrians (= shortest queue).
- If there is more than one shortest queue, choose from these the
queue end nearest to the routing decision (bee line).
Pedestrians who are on their way to a service point or the corresponding
queue are considered to be in the queue already.
Note that only the first queuing area on each route after the routing
decision is considered (and not any further queuing areas that follow
downstream within the partial route).
394 VISSIM 5.30-05 © PTV AG 2011