A directional roadway delineator includes an elongate, tubular body having a frontal impact face and a rearward face. The tubular body has a lower section disposable at least partially below a surface of the roadway to secure the delineator below the roadway surface. The tubular body includes an upper section, extending upwardly from the lower section to provide a marker above the roadway surface. A pair of longitudinal slits are formed through opposite sides of the tubular body between the frontal face and rearward face in the lower section of the body to allow the delineator to: elastically flex rearwardly in response to a force applied to the frontal impact face; and return to a substantially vertical orientation upon removal of the applied force.