designated as NH 3A. They are separated by a section of US 3. US 4 and NH 4 are two separate highways which both run within the city limits of Dover. NH 4 was originally supposed to have been part of US 4, but is instead a southward extension of Maine State Route 4. Two separate loops of NH 16 are both designated NH 16A but located only apart. New Hampshire has a few special state routes. Known examples are: NH 28 Bypass, marked with a standard shield including "BYPASS" over the numeral. NH 101 Business in the Raymond area, which is very poorly signed. In the Berlin area, truck routes are marked for NH 16 and NH 110 with a "TRUCK" sign mounted over standard shields. U.S. Numbered Highways New Hampshire uses the standard U.S. Route shield, a six-point white shield over a black square background. New Hampshire contains parts of the four lowest-numbered primary US highways: US 1, US 2, US 3 and US 4. US 2 is the only primary US highway within New Hampshire with any spur routes in the state, of which two are present: US 202 and US 302. New Hampshire does not use elongated route shields for U.S Routes, except on the occasional guide sign from a freeway and on some newer signage. Condensed fonts are used instead. US 1 Bypass in Portsmouth is marked with a standard shield including "BYPASS" over the numeral. US 3 Business in Laconia uses separate banners and US 3 shields, but only a few exist. It is otherwise signed as either NH 11A or NH 107. US 302 Business in Bartlett is unsigned - the road is signed only as NH 16A. All other alternates of U.S. Highways are signed as state routes. Interstate highways New Hampshire uses standard-issue Interstate shields for its two-digit Interstate highways, of which there are three: I-89, I-93 and I-95. Elongated shields were not initially used for auxiliary Interstates, but such shields have appeared on newer signage. New Hampshire no longer uses its state name on Interstate shields, but older signs with the state name do exist. New Hampshire contains the only two auxiliaries of I-93: I-293 and I-393. They are both completely overlapped by other routes. Turnpikes New Hampshire uses a special shield on the Spaulding Turnpike and the Everett Turnpike. Both contain the name of the turnpike over a colored