A selectable lane departure detection system (10) adapted for use by an
operator, and with a vehicle (12) traveling upon a thoroughfare having
lane-markings (16), and including at least one vehicle condition sensor
(22 through 28), a tracking sensor (20) or differential global
positioning system (38) configured to determine the location and
configuration of the lane-markings (16), and a controller (32)
communicatively coupled to the sensors (20 through 28), and configured to
determine a spatial relationship between the vehicle (12) and
lane-markings (16), determine a sporty driving maneuver by or preference
of the operator, modify a predefined warning threshold when so
determined, compare the relationship to the adjusted threshold, and issue
a warning when the relationship does not exceed the threshold.