24 Somerville Ave Somerville, MA 02143, USA
The right lane of Somerville Avenue, going east, where it intersects Washington Street and Webster Avenue, in Union Square, is, according to the sign (see photo), right turn only. However, almost no one in that lane turns right; they all proceed straight -- across the bike lane, I might add -- onto Webster Avenue.
I think the lane, itself, needs more right turn only markings -- at least two, one of which is right where you have a choice of which lane to be in. And, there should be another pole-mounted sign at the place where you have a choice of which lane to be in.
It's doubly annoying to wait in the longer middle lane, and then have the right lane cars trying to merge with you.