One very common signage error, which occurs in many states, is the mis-signage of a U.S. Highway as a state route (mostly on guide signs). This occurs in many places along U.S. Route 202, as well as on sections of U.S. Route 20 and in a few spots along U.S. Route 1, U.S. Route 6 and U.S. Route 44. These are less confusing sign errors, as U.S. Routes are part of the Massachusetts State Highway System, and thus do not share numbers with other state routes (the one exception being U.S./MA Route 3, which connect end-to-end and are treated as the same route by the state). Near Route 126 in Bellingham, Elm Street has a US 126 sign.