Currently in the HB, NB555 has its western terminus at NB540. However, the signage seems to indicate that NB555 extends further west than NB540. This is signed from the
south and
north on NB540, as well as from the
east on NB555. There is also a
reassurance shield on westbound NB555 just west of the intersection.
This map (on page 2) from New Brunswick Department of Transportation and Infrastructure shows NB555 following the same routing shown on OSM. Below is a zoomed in screenshot of NB555:
