User:Jayron32/sandbox/NH highways

Route	Starting point	Ending point	Towns along route	Notes
NH 1A	Massachusetts border in Seabrook	U.S. 1 (Middle Street) in Portsmouth	Seabrook, Hampton, North Hampton, Rye, Portsmouth	Auxiliary route for U.S. 1. Continues into Massachusetts as Massachusetts Route 1A. Known as Ocean Boulevard for much of its length.
NH 1B	NH 1A (Sagamore Road) near the Portsmouth/Rye town line	U.S.1 in Portsmouth, near the Maine border	Portsmouth, Rye, New Castle	Auxiliary route for U.S.1.
NH 3A (southern)	Massachusetts border in Hudson	U.S. 3 (South Main Street) in Concord	Hudson, Litchfield, Manchester, Hooksett, Bow, Concord	Auxiliary route for U.S. 3. Continues into Massachusetts as Massachusetts Route 3A.
NH 3A (northern)	U.S. 3/NH 127 (Central Avenue) in Franklin	I-93 exit 26 in Plymouth	Franklin, Hill, Bristol, Bridgewater, Plymouth	Auxiliary route for U.S. 3.
NH 4	NH 9/NH 108 (Central Avenue) in Dover.	Maine border in Dover	Dover	Continues into Maine as ME 4. Unrelated to nearby U.S. 4.
Example	Example	Example	Example