Unfortunately, I don't have a photo, but on the highway, if a wide load is approaching it is announced with "Abnormal Load" on the vehicle's front and back.
When we went to get our Zambian driver's licenses this was on a public safety poster:
The final one for today was on Tom's jobsite, where the bulk fuel farm was located:
For the sake of decency, please send us donations so we can clothe those naked lights!
I hope these gave you a bit of a chuckle and lightened your day.