A system and method for providing a vehicle roll stability indicator that
dynamically estimates the probability for vehicle rollover. The system
determines vehicle kinematics from various vehicle sensors. From these
kinematic values, the system estimates a roll angle of the vehicle and a
bank angle of the vehicle. The estimated bank angle is used to correct
the roll angle. The system determines a roll energy of the vehicle and a
roll energy rate of the vehicle from the corrected roll angle. The system
also calculates a tire lateral load transfer of the relative forces on
the vehicle tires, and the duration that any of the tires have been off
of the ground. From the roll energy, the roll energy rate, the tire
lateral load transfer and the wheel airborne duration, the system
calculates the roll stability indicator.