Actually that channel is Tuxedo PD's car to car channel. It is used by Tuxedo Park for dispatch but it is not there channel.Tuxedo has switched to the trunked system (LE Response South). You heard Tuxedo Park on 155.4225. Tuxedo hasn't used that channel for dispatching in well over a year since they switched to county dispatch. Midnights in the town are covered by the NYSP.
Town of Tuxedo PD (LE Response South, previously VHF MRD)
961 (Base) to 970
Tuxedo Park PD (155.4225)
951 (Base), 952, 955, 957
Also Tuxedo PD has some midnight coverage, not all nights but several nights a week.