VISSIM 5.30-05 User Manual

5 Base Data for Simulation
Lane Change Parameters
● General Behavior: Defines the way of overtaking:
- Free Lane Selection: Vehicles are allowed to overtake in any lane.
- Right Side Rule resp. Left Side Rule: Allows overtaking in the fast
lane only if the speed in the fast lane is > 60 km/h. For slower
speeds, vehicles in the slow lane are allowed to “undertake” with a
max. speed difference of 20 km/h.
To improve the general lane change behavior with either option, you can
add the parameters for cooperative lane changing to the *.INP file with a
text editor:
If the keyword COOPERATIVE follows after the keyword
RIGHT_HAND_RULE or FREE_LANESEL in the *.INP file, the lane
change behavior of the respective driving behavior parameter set will be
more cooperative. In this case, a vehicle A who sees that the leading
vehicle B on the adjacent lane wants to change to the lane of the vehicle
A tries to change lanes itself to the other side in order to make room. It
behaves as if it had to change lanes for a connector far in the distance,
accepting only the base values for necessary lane changes ("Accepted
deceleration") for its own deceleration and for the trailing vehicle C on the
new lane. Vehicle A does not change cooperatively to a lane which is
less suited for its own route, and it does not change lanes cooperatively if
vehicle B is more than 3 m/s faster or if the collision time would be more
than 10 seconds with the speed of vehicle A increased by 3 m/s. These
two parameters can be optionally changed, too, in the *.INP file, after the
keyword COOPERATIVE:
COOPERATIVE SPEED COLLISION_TIME .
134 VISSIM 5.30-05 © PTV AG 2011