The exemplary embodiments herein provide a system of roadway network transponders (RNTs) having a plurality of activation RNTs positioned within a roadway, where each activation RNT contains electronic data for controlling the maximum attainable speed of an automobile on the roadway. The system should also include a plurality of deactivation RNTs positioned within the roadway and following the activation RNTs when moving in a direction of vehicle travel, where each deactivation RNT contains electronic data for releasing an automobile from speed controls which control the maximum attainable speed of an automobile on the roadway. The RNTs may be used to control the speed of an automobile before or near a curve, merging point of one or more roads, or a construction zone.