Section 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.