Ultra wideband (UWB) vehicular radar has been studied and developed to achieve a safe driving and to promote business in an intelligent transport system. In the paper, we propose a UWB radar pulse design method that makes use of a linear multi-pulse combination of wavelet pulses which satisfy the Federal Communications Commission (FCC) regulation. Simulation results show that the UWB pulse obtained by the method have the advantages of better spectrum utility ratio and complying with the FCC spectrum mask.