Automobiles are increasingly being equipped with radar sensors that support drivers in critical situations, helping to reduce the number of accidents. Radar makes it possible to quickly and precisely measure the radial velocity, range, azimuth angle, and elevation angle of multiple objects. That is why the automobile industry is widely using this technology in advanced driver assistance systems (ADAS). This white paper explains the basics of automotive radar, MIMO radar signal processing, applications, and market trends. Test and measurement requirements for research and development, mandatory ETSI tests, and production verification of automotive radar sensors in various domains are described.