In a system of spaced surface markers disposed on a travel surface, each surface marker includes a housing, a power system within the housing producing electrical power from solar energy or vibration, and wireless transceiver(s) within the housing wirelessly communicating with neighboring surface markers. One surface marker relays data from and to another, while a third surface marker relays data from and to a network connection to a remote network. All surface markers may communicate via WiFi. The travel surface may be for vehicles. Each surface marker may communication with a vehicle or mobile device within communication range, to provide location or other information.