A method for detecting vulnerable road users (VRUs) using wireless signals includes receiving, by a wireless receiver, wireless signals from mobile devices and determining received signal strength indication (RSSI) levels of the wireless signals. The wireless signals and the RSSI levels of the wireless signals received by the wireless receiver are analyzed so as to determine at least one location of the VRUs. A notification is issued to the vehicle or a driver of the vehicle based on the at least one determined location of the VRUs.