[Code 1971, § 28-3]
It shall be the duty of the officers of the police department, or such officers as are assigned by the chief of police, to enforce all street traffic laws of this city and all state vehicle laws applicable to street traffic in this city.
[Code 1971, § 28-4]
Officers of the police department, or such officers as are assigned by the chief of police, are hereby authorized to direct all traffic by voice, hand, or signal in conformance with this chapter and other traffic laws, provided that in the event of a fire or other emergency, to expedite traffic, or to safeguard pedestrians, officers of the police department may direct traffic as conditions may require, notwithstanding the provisions of this chapter and other traffic laws.
[Code 1971, § 28-5; Res. No. 49-98, 6-9-1998]
Members of the department of fire, building, and emergency services may direct or assist the police in directing traffic at the scene or in the immediate vicinity of any event to which they are called to respond.
[Code 1971, § 28-17]
(a) 
Records Retention and Disposition Schedule No. 4-P-1, containing records retention periods for city police records established pursuant to part 185, title 8 of the NYCRR, is hereby adopted for use by the police department/traffic violations bureau.
(b) 
This council authorizes the disposition of records in accordance with retention periods set forth in the adopted records retention and disposition schedule.
[Code 1971, § 28-47]
The city shall place and maintain traffic control signs, signals, and devices when and as required under this chapter and other traffic ordinances of the city to make effective the provisions of this chapter and such ordinances.
[Code 1971, § 28-48(b)—(d)]
(a) 
No provision of this chapter for which signs are required shall be enforced against an alleged violator if at the time and place of the alleged violation an official sign is not in proper position and sufficiently legible to be seen by an ordinarily observant person. Whenever a particular section does not state that signs are required, such section shall be effective even though no signs are erected or in place.
(b) 
Whenever official traffic control devices are placed in position approximately conforming to the requirements of this chapter, such devices shall be presumed to have been so placed by the official act or direction of lawful authority, unless the contrary shall be established by competent evidence.
(c) 
Any official traffic control device placed pursuant to the provisions of this chapter and purporting to conform to the lawful requirements pertaining to such devices shall be presumed to comply with the requirements of this chapter, unless the contrary shall be established by competent evidence.
All traffic control signs, signals, devices, and markings in place on the adoption date of this Code are ratified and confirmed.