“Intelligent Cruise Control” (ICC) is one of the PROMETHEUS systems for which short-term implementation has been suggested. The German PRO-GEN Group has worked intensively on the development and evaluation of ICC during the last few years. The functions of ICC have been specified in cooperation with the automotive industry concerned. The system has been assessed in terms of traffic safety, transport efficiency and environmental pollution, based on microscopic traffic simulations. The assessment results show considerable safety benefits, whereas the decrease in transport efficiency is negligible.