N.Y. R.R. Law § 74
It shall be the duty of every corporation operating a steam railroad, within this state, and of its directors, managers or superintendents, to cause the boiler of every locomotive used on such railroad to be washed out as often as once every thirty days, and to equip each boiler with and maintain thereon at all times, a water glass, showing the height of water in the boiler, having two valves or shut-off cocks, one at each end of such glass, which valves or shut-off cocks shall be so constructed that they can be easily opened and closed by hand; also to cause such valves or shut-off cocks and all gauge cocks or try-cocks attached to the boiler to be removed and cleaned whenever the boiler is washed out pursuant to the foregoing requirements of this section, also to keep all steam valves, cocks and joints, studs, bolts and seams in such repair that they will not at any time emit steam in front of the engineer, so as to obscure his vision. No locomotive shall hereafter be driven in this state unless the same is equipped and cared for in conformity with the provisions of this section; but nothing herein contained shall be construed to excuse the observance of any other requirement imposed by this chapter upon railroad corporations, their directors, officers, managers and superintendents. Every corporation, person or persons operating a steam railroad and violating any of the provisions of this section, shall be liable to a penalty of one hundred dollars for each offense, and the further penalty of ten dollars for each day that such violation shall continue. The commissioner of transportation shall enforce the provisions of this section.
N.Y. R.R. Law § 74