In this book we discuss a Spread Spectrum based radar system for car detection in the road and autonomous guidance of vehicles. Basically we have proposed a set of algorithms which lead to the solution of road and vehicle collision using carrier recovery method. One of the proposed techniques is spread spectrum which can improve the reliability of automotive radars. Along with the Radar technologies, we have proposed another algorithm to extract the moving object Doppler frequency using 2P-Power method. This Doppler frequency will help us to get information about the velocity of the vehicle on the road. This SS technology along with the Doppler recovery method adds an additional advantage to our Radar for Intelligent transport system in near future.