b. It shall be the duty of any member of a law enforcement agency who is at the scene of the accident to request the said operator or operators of the motor vehicles, when physically capable of doing so, to exchange the information required hereinabove and such member of a law enforcement agency shall assist such operator or operators in making such exchange of information in a reasonable and harmonious manner.
A violation of the provisions of paragraph a of this subdivision shall constitute a traffic infraction punishable by a fine of up to two hundred fifty dollars or a sentence of imprisonment for up to fifteen days or both such fine and imprisonment.