VISSIM 5.30-05 User Manual

6 The Traffic Network
- Alternatively, you may drag the conflict marker (green bar) out of any
link.
► To delete a priority rule completely, follow the steps below:
- Click Priority Rules mode (to make sure that no priority rule is
selected), select the link/connector of the stop line of the priority rule
to be deleted and drag the stop line out of any link/connector.
6.6.1.5 Examples
The following examples illustrate the use of priority rules.
Example 1: Driveway Exit
Modeling a driveway exit (or similar situation) is very simple:
1. Place the stop line (red bar) at the position where
yielding vehicles need to stop.
2. Place the conflict marker (green bar) on the
major road link (not on the connector that leads
onto that link) about 1m before the end of the
conflict area (before the connector enters the link
of the major road).
3. Accept the standard parameters (headway = 5m,
gap time = 3s).
The green bar is placed before (upstream of) the
location where the minor road connector enters the
major road so that vehicles of the minor road will not
yield to themselves.
conflict marker
connector
stop line
headway
conflict area
264 VISSIM 5.30-05 © PTV AG 2011
relevant gap for min. gap time
headway
Example 2: Modeling “Keep Clear Areas” and “Yellow Boxes”
Modeling a Yellow Box causes vehicles to stop in front of an in intersection if
it cannot continue without blocking part or all of it. Thus different priority rules
are needed for each vehicle "length" class, e.g. cars and HGVs/buses.
To model a Yellow box follow the steps below: