This 7 Days to Die mod adds radiation signs to the wasteland and radiation zone. Because the game combines the two biomes, it is not possible to only put rad zones in the wasteland. However, in theory, if you come across a rad zone sign where it doesn’t belong, there might be radiation.
The forum topic of the mod is here.
Credits: Guppycur
If you have any questions or have any problems/bugs, please use the support link (Discord, Forum Topic, GitHub Issues, etc.) in the post. If there is no support link in the post, please use the comments section.