N.Y. Railroad Law § 83-a

§ 83-a. Operation of motor vehicles, snowmobiles, recreational\nvehicles, and riding of animals on railroad property. Except in the case\nof a railroad employee, contractor of the railroad corporation or public\nofficial acting in the performance of his or her duties, no person shall\nknowingly operate a motor vehicle, snowmobile, or other recreational\nvehicle, including all terrain vehicles and motorcycles, or ride, lead\nor drive any horse or other animal upon abandoned railroad property\nwhich is posted to prohibit the operation of any such vehicles or\nanimals thereupon, or upon or along the track or tracks of an operating\nrailroad or within the fences or guards thereof, except across or along\nstreets or highways or at farm or forest crossings where necessary to\ncross such tracks or property. A violation of the provisions of this\nsection shall constitute a violation punishable by a fine of not less\nthan one hundred dollars nor more than two hundred fifty dollars.\nConviction for a second or subsequent violation of the provisions of\nthis section shall be punishable by a fine of not less than two hundred\nfifty nor more than five hundred dollars.\n