A. 
It shall be the duty of officers designated by the Chief of Police to enforce the provisions of this chapter. Such officers are hereby authorized to direct all traffic, either in person or by means of visible or audible signal in conformance with the provisions of this chapter; provided, however, that in the event of a fire or other emergency, to expedite traffic or safeguard pedestrians, officers of the Police or Fire Department may direct traffic as conditions may require, notwithstanding the provisions of this chapter.
B. 
The City of Haverhill hereby does accept the provisions of MGL c. 147, § 10F, pertaining to parking control officers.
The Chief of Police is hereby authorized to close temporarily any street or highway in an impending or existing emergency or for any lawful assemblage, demonstration or procession.
The Chief of Police is hereby authorized to prohibit, temporarily, parking on any street or highway or part thereof in an impending or existing emergency or for a lawful assemblage, demonstration or procession. Vehicles parked in places where parking is prohibited temporarily may be moved by or under the direction of an officer.
The provisions of this chapter shall not apply to drivers actually engaged in work upon a street or highway closed to travel or under construction or repair, to officers when engaged in the performance of public duties nor to drivers of emergency vehicles while operating in an emergency and in performance of public duties when the nature of the work of any of these necessitates a departure from any provision of this chapter. These exemptions shall not, however, protect the driver of any vehicle from the consequences of a reckless disregard of the safety of others.
Drivers of vehicles shall comply with any lawful or reasonable order, signal or direction of any officer.
A. 
The police shall maintain a suitable system of filing traffic reports. Traffic accident reports or cards referring to them shall be filed alphabetically by location.
B. 
As the accidents at any particular location become numerous, the police shall study such accidents and inform the Chief of Police of their findings and conclusions.
A. 
The police shall maintain a suitable file in which a record of all traffic accidents, warnings, arrests, convictions and complaints are filed alphabetically under the name of the driver concerned.
B. 
The police shall study the cases of all drivers having bad traffic records, attempt to discover the causes and take whatever steps are lawful and reasonable to eliminate such causes or to have the licenses of such persons to drive suspended or revoked.
The police shall submit a traffic safety report annually in the month of July to the Mayor covering:
A. 
The number of traffic accidents, the number of persons killed and injured and other pertinent traffic accident data.
B. 
The number of traffic accidents investigated, the number of hazardous locations studied, the number of drivers with bad traffic records interrogated and other pertinent data on the safety activities of the police.
C. 
The plans and recommendations for future traffic safety activities.