The commission or its duly authorized representatives are hereby authorized and empowered to enter and inspect any property, premise or place, owned or operated by a railroad, whether fixed facilities or rolling stock, including, but not limited to, locomotives, cars and cabooses, stationary or in motion, at any reasonable time for the purpose of ascertaining the state of compliance with this article and rules and regulations in force pursuant thereto. No person shall refuse entry or access to the commission or any authorized representative of the commission who requests entry for purposes of inspection, and who presents appropriate credentials; nor shall any person obstruct, hamper or interfere with any such inspection.