That portion of the road known as state route number forty-seven, commencing at the intersection of that state route and state route number forty-nine and proceeding in an easterly direction to the intersection of state route forty-seven and United States route number one hundred twenty-seven in Darke county only, shall be known as the “Pfc. Douglas E. Dickey Memorial Highway.”

The director of transportation may erect suitable markers along the highway indicating its name.