A Single lane change event drives the vehicle through a single lane change, attempting
to follow the centerline of the defined lane.
You can define the speed of the lane change, along with the lane dimensions. A steering
controller is used to follow the path and a torque controller is used to maintain speed
through the event. The event supports right and left lane changes. A plot template is
available to plot the results.
A Single lane change does not have specific metrics associated with it. A lane change is
typically used as a subjective evaluation test, but it is difficult to create objective
metrics of the test. Figure 1. Single Lane Change - Path Figure 2.
The parameters available in the Single Lane Change event are detailed in the following
table:
Parameter
Description
Units
Length of unit selection (Model, m, ft)
Velocity unit selection (Model,
m/s, km/h, mph)
Lateral offset
Lateral offset of the lanes.
Length- Section 1
Length of the initial section of road in meters.
Length- Section 2
Longitudinal length of the transition section of road where the lane change
occurs.
Length- Section 3
Length of the recovery straight section of road.
Turn direction
Direction the vehicle turns during the event (as seen by the driver).
Velocity
The initial speed of the vehicle.
Look ahead time
Look ahead time, used by the Driver Feedforward steering model.
Prediction step size
Maximum step size, used by the Driver Feedforward steering model.
End time
Absolute end time of the event, in seconds.
Print interval
Time interval of data output to the plot file (.plt) and
graphics file (.h3d).
Figure 3.
References
ISO 3888-2-2011 Passenger cars — Test track for a severe lane-change maneuver.
NATO Allied Vehicle Testing Publication AVTP: 03-160 Sep. 1991.
