Made a couple of signs for Freeways.
I know the things on the signs are not correct.

Sign by night:
It looks decent, but I recommend adding more screws and an interior frame. I would recommend a triangular space frame, those make the overhead signs feel more “full”.
The signs look good. Personally, I would recommend that you increase the font size of the distance text. It’s a bit too small in my opinion.
Next, the larger signs (second and fifth screenshot) seem a bit empty. To fix this, I would recommend that you add the direction of travel, and perhaps the badge of the particular freeway. Other than that, good work.