Continuous detection of slippery winter road surfaces - determining and comparing driving parameters and boundary conditions for motor car

摘要

The method involves determining the driving conditions and situation, deriving the tyre characteristics and boundary conditions associated with the driving situation, checking whether the tyre characteristics fulfil the boundary conditions and deciding whether the road is icy. The driving situation is defined by the vehicle's speed, longitudinal acceleration and rate of change of yaw angle. The driving situation is identified as stationary, constant travel in a straight line, accelerated linear motion, decelerated linear motion, constant turning or variable turning.