(1) Every person operating a common carrier railroad in this state shall equip each locomotive and caboose used in train or yard switching service, and every car used in passenger service with a first aid kit of a type to be approved by the commission, which kit shall be plainly marked and be readily visible and accessible and be maintained in a fully quipped condition: PROVIDED, That such kits shall not be required on equipment used exclusively in yard or switching service where such kits are maintained in the yard or terminal.
(2) Each locomotive and caboose shall also be furnished with sanitary cups and sanitary ice-cooled drinking water.
(3) For the purpose of this section a "locomotive" shall include all railroad engines propelled by any form of energy and used in rail line haul or yard switching service.
(4) Any person violating this section is guilty of a misdemeanor.