What would be a good way to tag U-Turn restriction along the length of a way rather than only at an intersection?

The signs I posted do not apply to a maneuver “at a point along the roadway”, they apply to an entire stretch. There is no regulation prohibiting U-turning at the driveway - the regulation prohibits U-turning on the entire stretch. The physical signs were simply posted on a convenient pole.

Yes, per my footnote, this is the case in the location I posted.