Let’s leave bureaus, sports, aid and law for a bit, and focus on one more scientifico-technical standard that emerged on the back of technological development at the beginning of the XXc.
The world had not finished with mathematics, music and signs as technical or symbolic languages. A much more passionate topic rolls on: road signage!
As with clocks (timekeeping), religion and administration (the calendar), accounting (mathematical signs), the printing press (punctuation), musical instruments (music sheets), geodesics and administration (the metric), statistics (significance and error conventions), the telegraph (the Morse code), the World Fairs (places for technonerds to meet), the railways (time zones), bicycles (standardised parts) and typewriting (QWERTY keyboards), the motorised vehicles that were taking over the planet at the beginning of the XXc were poised to push some convention upon us.
We might be familiar with the signs that emerge on the side of roads. They might be circular, squares, triangles, octagons, or sideways squares (diamonds), shields and house-like shapes (pentagons). Their colours would be red, white, blue, yellow, green, with the occasional brown, pink, or orange. There are also luminescent ones, with colours that change, usually from green to orange and to red. These signs have a combination of standardised pictures, messages and numbers to convey an almost global meaning. These signs are expected to be understood by the people who go about on the roads with their motor vehicles.
The signs and traffic lights did not exist before the clogging of the pre-existing roads with these fast vehicles, though bicycle clubs were the first ones to experiment with road signage, especially indicating slopes. The new road conditions called for easily identifiable signs to be read quickly by any driver, no matter their origin. So, with the fast, and numerous, vehicles the signs went up. Soon enough people in Europe were aware that the signs had to be shared across national borders, otherwise vehicles crossing from one country to another could be confused by different meanings. Speed of reaction was, and still is, crucial.
Following the international conventions that we have seen emerging from the end of the XIXc. on the back of technical inventions and imperial powers, they organised what probably is one of the most boring conferences in history. In 1909 the European vehicle associations met in Paris to decide on a small set of common traffic signs. They did a similar thing in 1931 and 1949 in Geneva to unify a larger set of signs on a European scale. By 1968 security triumphed over boredom, they met in Vienna and created the “Vienna Convention on Road Signs and Signals”, aiming to make traffic signalling universal for the whole planet.
They failed.
Currently, there are two main road sign standards on the planet, plus a lot of other stuff in between. One of them is the European one, which gave the world the “Vienna Convention”, adopted by 68 countries (roughly red on the map), and the North American one, boringly called the “Manual on Uniform Traffic Control Devices for Streets and Highways” (MUTCDSH), and used, with many variants, in the yellow countries on the map. But not all is well and standard in the US for the MUTCDSH, as some states engaged in Typefacewars, maybe the most bland wars in history. In southern Africa, ten countries use the also engaging name of the Southern African Development Community – Road Traffic Signs Manual (SADC-RTSM).
But even in MUTCDSH- and SADC-RTSM-derived countries, The Convention forms the basis of much of the traffic signage, or is similar enough. If a non-Irish European drives through the US, most of the signs would be immediately familiar. The biggest differences between The Convention and Non-Convention countries are that speed limits and obligatory signs are rectangular, and yellow diamonds with black signs are used as warnings. Instead, The Convention uses round signs for speed limits and obligatory signs and an upward-pointing red and white triangle for warnings — also shared by SADC-RTSM, but one might find different animals. Even that difference between Convention and Non-Convention danger signs is not much, as an upward-pointing triangle is just the upper half of a diamond, therefore it is not much of a stretch of the imagination to understand the other.
The story of road signage does not stop in the 20th century! In 2025, the Global Forum for Road Traffic Safety (another global boring organism that rules your life but you probably never heard about) passed a resolution to replace the entire text of the Convention! The exciting road-signage path rolls ahead!
We then took this little traffic diversion to show three ingredients that we will see from now on shaping many of the global questions of the planet. First, an agglomeration of big and middle-sized countries that are in close proximity to each other and need to share a convention for the benefit of them all find terms to agree with each other. Second, when new technology standards — especially related to communication — emerge and extend, the consolidation into commonly agreed rules tends to take shape relatively fast. Third, colonial powers force the conventions into colonised territories without the input of the societies under dominion.
Roads, moreover, are the paramount example of infrastructure. It is needed, inherited, maintained over generations and represents connectivity like nothing else. For much of the modern world, the combination of technology and infrastructure drives the need for a — virtually — universal language. Coordination forces create the political motivation for neighbouring, independent administrations to sit down at a table and try to agree on a common set of conventions. Once a standard achieves enough maturity through this process of regional standardisation, technological development and colonial imposition, the parts of the planet that are still not part of this dynamic are more likely simply to adopt that standard. New players, then, either adopt it or at least have it in consideration.
With these three characteristics, it is easy to see how Europe is the place in the World that has the most influence in shaping much of the standards and internationalisation, as we have seen in the Western Dominions entry.
Similarly, exceptions to these three general trends are easy to see, with densely populated islands that have not been colonised recently, like the Japanese archipelago and Great Britain, and big countries like China and the US. The US and the UK in part explain the survival of two Western standard flavours, as they were big enough, isolated enough and innovative enough to consolidate and protect their own conventions, but still share much with the rest of international protocols.
This kind of mindset and framework would be important for our question of what humanity wants.
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