On the weekend I drove up the mountains of Musandam (Oman). Incredibly hot and steep roads which can only be mastered by a 4WD; turns like the one you see and you better don’t miss. While I took the photo of this sign with its obvious message I wondered why, with all the diversity around the world, street signs happen to be relativelly uniform. So I read about it:
The earliest road signs were probably milestones, but already in the late 1870s the increasing number of bicycles made signs warning of potential hazards popular.
One of the first modern-day road sign systems was devised by the Italian Touring Club in 1895. An international congress was held in 1900 in Paris, the British Government agreed on four national signs, and North America introduced a slightly different signage system. But in 1968, the United Nations “Convention on Road Signs and Signals” held in Vienna became a key event to align the signs we see around the world.