A method, apparatus, and computer-readable medium are provided for wireless communication at a Road Side Synchronization Device (RSSD). The RSSD receives, from a first neighbor device, a first Sidelink Synchronization Signal (SLSS). The RSSD synchronizes in time/frequency with the first neighbor device, and transmits a second SLSS. The second SLSS is based on a synchronized timing and a synchronized frequency with the first neighbor device.