New York Consolidated Laws, Rapid Transit Law - RAT § 51. Right of board of transportation to enter upon property

It shall and may be lawful for the board of transportation, and for all persons acting under its authority, to enter in the day time into and upon any and all property which it shall deem necessary to be acquired, or to which there may be appurtenant property rights which it shall deem necessary to be acquired or extinguished by the city, for the purpose of making the maps or surveys provided for by section fifty-two, and also to enter in like manner and for the same purpose upon any property adjacent to and within five hundred feet of the property to be so surveyed.