N.Y.C. Admin. Code § 14-128: § 14-128 Three platoon system; traffic squad not affected by.

The three platoon system shall not apply to or govern the hours or tours of duty of sergeants or police officers of the city of New York, who may from time to time be detailed or assigned to what is known and designated as the traffic squad, provided, nevertheless, that the total number of members of the police force or department of such city, so detailed or assigned to such traffic squad, shall not at any time exceed in the aggregate one-third of the entire police force or department.