<p>According to the present invention, a road marker comprises: a case; a fixing unit installed in a lower portion of the case to fixate the case to a road surface; a transformable member installed in the case to protrude from the road surface and capable of being transformed to be inserted and withdrawn from the road surface by an external force; an elastic unit installed in the transformable member and returning the transformable member to an original state when the external force is removed; and a reflection member installed on an outer surface of the transformable member.</p>
