(a) [Eff. until Sept. 1, 1999, see also subd. (a) below.] Route 23. Route 23 between the Greene/Columbia county line and Route 32 in the Village of Catskill and the Towns of Cairo and Catskill.

(a) [Eff. Sept. 1, 1999, see also subd. (a) above.] Route 23. Route 23 from the Delaware/Greene county line to the Greene/Columbia county line in the Village of Catskill and the Towns of Catskill, Cairo, Durham, Windham, Ashland and Prattsville.

(b) [Eff. until July 11, 2001, see also subd. (b) below.] US Route 9W. US Route 9W between the Albany/Greene county line and the Route 81/Route 385 intersection in the Towns of New Baltimore and Coxsackie.

(b) [Eff. July 11, 2001, see also subd. (b) above.] US Route 9W. US Route 9W between the Greene-Albany county line and CR 9 in the Towns of New Baltimore and Coxsackie, a distance of 3.3± miles.

(c) Route 32. Route 32 between the Albany/Greene county line and the Route 23/Route 32 overlap in the Towns of Cairo and Greenville.

(d) Route 81. Route 81 between the Albany/Greene county line and Route 32 in the Towns of Greenville and Durham.