(1) The words and phrases used herein shall be construed as follows, unless the context shall otherwise require;

(a) The term "localized facilities," when used herein, shall mean those facilities of sanitation or shelter for the welfare and health of railroad employees, including but not limited to trainmen, enginemen, yardmen, maintenance of way employees, highway crossing watchmen, clerical, platform, freight house and express employees, station agents and telegraphers, which facilities are to be maintained at points where employees are required to report for duty or are relieved from duty.

(b) The term "highway crossing shanty," when used herein, shall mean a building at which public highway crossing watchmen are regularly stationed for performance of their duties.

(c) The term "running facilities," when used herein, shall mean those facilities of sanitation or shelter to be maintained on engines, trains or cabooses for the welfare and health of railroad trainmen, enginemen and yardmen.

(d) The term "camp facilities," when used herein, shall mean those facilities of sanitation or shelter for the welfare and health of maintenance of way employees, when such facilities are to be maintained at railroad camps of a permanent or seasonal nature, or are located in moveable cars when used for housing maintenance of way employees.

(e) The term "crossing watchmen," when used herein, shall include such employees, except members of train and yard crews, as are used in the flagging of public highway crossings or in the actual operation of manually controlled gates, public highway crossing signals, or other appurtenances having to do with the protection of such crossings.

(f) The term "tool house or shelter facilities," when used herein, shall mean the shelter facilities maintained for maintenance of way employees at points where such employees report for duty or are relieved from duty.