These are usually sytsems from Bosch and Conti. They use their own embedded controls. Soem migth already use Matlab for writing the code (as in some steering systems), most lower level languages which are CPU oriented

It's mostly MATLAB & Simulink for the algorithmic part, automatically translated to C/C++, then integrated with a ECU framework in C/C++. See various examples on that page: http://www.mathworks.de/company/user_stories/