Extremely rare U turn signal in MD

There's only two of those in my town, and those were the only two I ever seen in person. But I have seen there's more of those out there in MD from Baltimore Ghosts webpage.

This one is actually pretty much about a block away from me on the main road. (after a few turns)

As we have doghouse style mainly for normal view. But this style is also often found on the front row (the closer to the stop line row) is usually shaped like this instead of a dog house shape while the doghouse is on the farther part.