1. For the purpose of law enforcement, all district projects to be transferred to the commission shall be treated as commission highways under chapter 43 and all projects to be transferred to a local transportation authority shall be treated as streets or roads of that entity.

2. All laws of this state relating to the maintaining, signing, damaging and obstructing roads shall apply to district projects. The duties and powers imposed by such laws on certain officials shall devolve upon the district’s engineer or other employee designated by the board. Nothing in this subsection shall be deemed to interfere with, restrict or limit the authority of the commission to govern and control highway marking, signalization and signing to the extent the commission is authorized by law.

3. For outdoor advertising and junkyard control purposes, a district project may be designated by the commission as a part of the state primary highway system and by a local transportation authority as a part of its street or road system.