Accidents in severe weather mainly arise due to a drastic loss of friction between the tires and the road surface unexpected by the driver. Beside all kinds of slippery winter conditions hydroplaning situations are even more dangerous not just for manually driven vehicles but also for automated vehicles when cruising at speeds above 80 to 100 km/h. This paper describes the Continental approach for a cascaded holistic safety system in imminent hydroplaning situations independent of the degree of automation. First, to reduce the overall hydroplaning risk a continuous tire tread depth monitoring function is integrated to trigger a timely replacement of worn-out tires. Second, a surround view camera and new tire-sensor-based early hydroplaning risk recognition allows an in-time driver warning or a system-initiated speed adaptation in case of automated vehicles. Especially for Automated Driving (AD) vehicles it is of major importance to avoid hydroplaning before it happens. Third, this information is send to the cloud-based eHorizon service so that also other traffic participants can be informed before entering a hydroplaning risk area. In case hydroplaning cannot be avoided a control system is designed and tested to evaluate an innovative assistance strategy in hydroplaning situations. The test cases demonstrate the suitability of this assistance concept.