N.Y. Comp. Codes R. & Regs. tit. 9 § 4115.7
The horses shall be allowed two warm-up scores, unless otherwise directed by the starter, before being called to form a parade. The starter shall have full control of the horses from the formation of the parade until the starter gives the word "go." The starter shall be stationed at or near the starting point and shall give the word "go" as close as possible to such starting or release point. All drivers shall follow the instructions of the starter as closely as possible and shall avoid unnecessary delay in the parade and scoring. If the word "go" is not given, all the horses in the race shall immediately turn on signal and jog back to their parade positions for a fresh start. There shall be no recall after the starting word has been given.
N.Y. Comp. Codes R. & Regs. Tit. 9 § 4115.7