The image often circulates on social media, despite the fact it's not a fair comparison.

An image that purportedly compares train systems in the U.S. and Europe often circulates online. For instance, in mid-December 2024, an X user shared the map (archived) to comment on the two region's differing economies.

(X / @andercot)

That post had amassed more than 6.7 million views and 38,000 likes as of this writing. It spread as a new direct line of high-speed trains between Paris and Berlin made its first trips.

The alleged comparison attracted online attention months earlier, as well, when Facebook account The Sound of Train posted it (archived). Also, on Reddit in 2023, the image received more than 120,000 upvotes. One user quipped: "In Germany, trains are used even for go [sic] from bathroom to kitchen."

Although the maps conveyed a generally accurate impression of the differences in size and density between the U.S. passenger train system and Europe's, the U.S. map did not include all regional and commuter passenger train lines so the comparison was slightly unbalanced. The European map was an accurate representation of reality.

It is true that, compared to Europe, the passenger train system in the U.S. is underdeveloped. More accurately, it has been severely degraded over the decades, as many lines across the country have fallen into disuse since the 1960s, according to a 2019 post by The Greater Greater Washington (a website that advocates for better urbanization in the Washington, D.C., area) based on data from the National Association of Rail Passengers.

In the same period, Europe opened many new passenger train lines at the city and regional level, connecting large cities within countries and even across borders. In 1981, the French government opened Europe's first high-speed train line between Paris and Lyon. That technology expanded across the continent with AVE, connecting major cities in Spain, and the Eurostar, which connects London to Paris, Brussels and Amsterdam. As of 2024, trains of all speeds connected Munich to Prague, Marseille to Barcelona and Vienna to Rome.

The U.S. map in the image accurately shows Amtrak's map of trains, which we found on Amtrak's website. Amtrak is a national network of trains that connect cities over long distances.

Meanwhile, comparing the viral European map to national railroad maps showed that it includes not only long-distance lines but also regional ones. In part, that is why that map has considerably more lines compared to the U.S. map.

In other words, a fair comparison between the two systems would include all regional U.S. lines, such as the Long Island Rail Road and Metro-North (the nation's largest networks with a combined 136 million rides each year), the NJ Transit Rail Operations, which links New York City to Philadelphia, and the Southeastern Pennsylvania Transportation Authority -- better known as SEPTA -- around Philadelphia. Other such lines include Caltrain around San Francisco and Denver's RTD.

Even when it was most used in the 1910s and 1920s, America's passenger train network displayed stark differences between regions. Eastern cities are closer, denser and more amenable to railroad connection, while, in the west, agglomerations are more distant from each other. Still, travelers used the train widely a century ago.

All of this changed, starting in 1929, for multiple reasons: first, the Wall Street crash of 1929 sparked the Great Depression, which made mid- and long-distance travel less affordable to people with economic problems. At the same time, Ford Motor Company brought the mass production of cars to the market, and by that year, 23 million automobiles were on the road for a population of 123 million people. The subsequent urbanization changed the transportation market, making it more convenient for households to own one or more cars. Then came airplane travel. Little by little, the U.S. economy deprioritized the train system.

But the success of local and regional train lines in the northeast of the U.S. might provide a clue to the evolving transportation needs of the country. Experts say creating pedestrian-friendly streets and roads and investing in public transportation helps decongest cities and highways. U.S. President Joe Biden announced in late 2023 a plan to develop new train lines and technology including high-speed rail for passengers.