A method for determining that a vehicle is entering a banked curve, comprising: determining a reference lateral acceleration value (A yref) for the vehicle based on parameters that do not include lateral acceleration; sensing a vertical acceleration (A z) for the vehicle; sensing a lateral acceleration (A y) for the vehicle; and determining and indicating that the vehicle is entering a banked curve by: determining whether the vertical acceleration is greater than a previous vertical acceleration and whether the lateral acceleration is greater than a previous lateral acceleration; determining whether the vertical acceleration is greater than a constant vertical acceleration value; determining whether the lateral acceleration is less than a threshold percentage of the reference lateral acceleration value; and providing a banked curve signal indicating that the vehicle is entering a banked turn when: 1) the sensed vertical and lateral acceleration are greater than the previously sensed vertical and lateral acceleration, 2) the vertical acceleration is greater than the constant vertical acceleration value, and 3) the lateral acceleration is less than the threshold percentage of the reference lateral acceleration value. determining a reference lateral acceleration value (A yref) for the vehicle based on parameters that do not include lateral acceleration; sensing a vertical acceleration (A z) for the vehicle; sensing a lateral acceleration (A y) for the vehicle; and determining and indicating that the vehicle is entering a banked curve by: determining whether the vertical acceleration is greater than a previous vertical acceleration and whether the lateral acceleration is greater than a previous lateral acceleration; determining whether the vertical acceleration is greater than a constant vertical acceleration value; determining whether the lateral acceleration is less than a threshold percentage of the reference lateral acceleration value; and providing a banked curve signal indicating that the vehicle is entering a banked turn when: 1) the sensed vertical and lateral acceleration are greater than the previously sensed vertical and lateral acceleration, 2) the vertical acceleration is greater than the constant vertical acceleration value, and 3) the lateral acceleration is less than the threshold percentage of the reference lateral acceleration value. determining whether the vertical acceleration is greater than a previous vertical acceleration and whether the lateral acceleration is greater than a previous lateral acceleration; determining whether the vertical acceleration is greater than a constant vertical acceleration value; determining whether the lateral acceleration is less than a threshold percentage of the reference lateral acceleration value; and providing a banked curve signal indicating that the vehicle is entering a banked turn when: 1) the sensed vertical and lateral acceleration are greater than the previously sensed vertical and lateral acceleration, 2) the vertical acceleration is greater than the constant vertical acceleration value, and 3) the lateral acceleration is less than the threshold percentage of the reference lateral acceleration value.