For the purpose of this article:

1. “Traffic and parking violations agency” shall mean a department of the Nassau county government established pursuant to subdivision two of section three hundred seventy of this article or a department in the Suffolk county government established pursuant to subdivision three of such section to administer and dispose of traffic and parking infractions.

1-a. “Traffic violations agency” shall mean an executive department of the city of Buffalo established pursuant to subdivision four of section three hundred seventy of this article to administer and dispose of traffic infractions as authorized pursuant to this article.

1-b. “Traffic violations agency” shall mean an executive department of the city of Rochester established pursuant to subdivision five of section three hundred seventy of this article to administer and dispose of traffic infractions as authorized pursuant to this article.

2. “Traffic prosecutor” shall mean an attorney duly admitted to practice law in the state of New York who, having been appointed and either hired or retained pursuant to section three hundred seventy-four of this article, has the responsibility of prosecuting any traffic and parking infractions returnable before the Nassau county district court or the Suffolk county district court or any traffic infractions returnable before the Buffalo city court pursuant to the jurisdictional limitations of section three hundred seventy-one of this article.

2-a. “Traffic prosecutor” shall also mean an attorney duly admitted to practice law in the state of New York who, having been appointed and either hired or retained pursuant to section three hundred seventy-four-b of this article, has the responsibility of prosecuting any traffic infractions returnable before the Rochester city court pursuant to the jurisdictional limitations of section three hundred seventy-one of this article.