In 1908, the state legislature created a statewide system of unsigned legislative routes.

Between 1917 and 1926 SR 267 was an unsigned route.

A large number of formerly unsigned routes received sign numbers corresponding to their new legislative numbers.

It is designated as NY 982L, an unsigned reference route.

MD 713 has five unsigned auxiliary routes and one former auxiliary route.

There are ten unsigned auxiliary routes of MD 778.

In 1908, the legislature created a statewide system of unsigned legislative routes that used these new state highways and other, yet-to-be improved roads.

US 15 has five unsigned auxiliary routes.

MD 51 currently has four unsigned auxiliary routes.

MD 806 has three existing unsigned auxiliary routes.