N.Y. Comp. Codes R. & Regs. tit. 17, § 185.3 – Parkways.

Contracts shall be awarded for the following parkway zones:

Zone	Parkway	Zone Limits
1	Hutchinson River Parkway	New York City line to the bridge carrying the Hutchinson River Parkway over Mamaroneck Avenue in White Plains.
2	Hutchinson River Parkway	Bridge carrying the Hutchinson River Parkway over Mamaroneck Avenue in White Plains to the Connecticut State Line.
3	Cross County Parkway	From intersection with Hutchinson River Parkway to intersection with Saw Mill River Parkway.
4	Saw Mill River Parkway	New York City line to Lawrence Street in Dobbs Ferry.
5	Saw Mill River Parkway	Lawrence Street in Dobbs Ferry to Marble Avenue in Thornwood.
6	Saw Mill River Parkway	Marble Avenue in Thornwood to I684 in Katonah.
7	Sprain Brook State Parkway	From Bronx River Parkway to Taconic State Parkway.
8	Taconic State Parkway	From Kensico Dam Plaza in Town of Mount Pleasant to Route 100.
9	Taconic State Parkway	From Route 100 to Route US 6.
10	Taconic State Parkway	From Route US 6 to Route 301.
11	Taconic State Parkway	From Route 301 to Route 55.
12	Taconic State Parkway	From Route 55 to Route 199.
13	Taconic State Parkway	From Route 199 to Route 23.
14	Taconic State Parkway	From Route 23 to New York State Thruway.

Boundaries between zones are defined by location of the entrance ramps.