Road marker having a base cup with a resilient cover diphragm near the top, and an elongated, substantially flat and rigid light reflector lens with a rigid base mount in the middle of the diaphragm and below the top of the base cup, with the lens being normally in erect disposition on the diaphragm and extending above the top of the base cup, and the lens and diaphragm yielding to a vehicle tire or plow blade passing over the marker, with the lens yielding in tilting fashion to a passing plow blade.