The other day I was speaking to a Korean friend of mine and he was telling me about Seoul's new GTX-A commuter railway line. This line opened at the end of 2024 and is part of a broader Great Train eXpress initiative that includes 3 lines (A, B, and C) and that is intended to establish a new "30-minute commute zone" surrounding Seoul. A is the first line to open. C is scheduled for completion in 2030. And already, three more lines are now being planned: D, E, and F.
What this first line has accomplished is pretty extraordinary. GTX-A connects Paju in the north to Seoul in the south. Paju sits at the northern border of South Korea (and therefore houses many US and South Korean Army bases) and has a population of over half a million people. Prior to GTX-A opening, this commute used to take approximately 90 minutes by conventional subway and up to 90 minutes by car, depending on traffic.
Today it takes exactly 22 minutes! If you're interested in seeing a complete walking video of this commute, click here.
The GTX system is a higher-speed railway line. Meaning, the trains are designed to operate up to a maximum speed of 180 km/h. Average speeds vary depending on the segment and stop spacing, but it seems to operate at an average speed of around 100 km/h. Paju to Seoul, for example, is around 33 km. So at 22 minutes, that's a blended average of 90 km/h. This means that there's no faster way to travel between these two points.
What this also means is that, as new GTX lines continue to come online, the geography of the Seoul urban region will continue to get redrawn. Suburban regions that were previously far out, are now going to get "pulled in" and function as more integral parts of a contiguous city. This improved access should also alleviate housing pressures by effectively opening up more supply.
I mean, 22 minutes is nothing. It can take longer than this to travel 3 blocks on a Toronto streetcar during rush hour. GTX is a prime example of the magic of rail and what's possible once you accept that highways (and tunnels underneath them) aren't going to be what efficiently move the most number of people around a big global city.
Cover photo by Ethan Brooke on Unsplash
The City of London, also known as the "Square Mile," is the financial district of London. Some 678,000 people work in the area, nearly 9,000 people live in it, and millions visit it each year. So it's an intensely used square mile (~1.12 square miles or ~2.9 square kilometers). Given this intensity, do you think that it would be reasonable, or even possible, for all 678,000 people to drive their own car to work and not experience crippling traffic congestion?
Obviously not, and the data reflects that:
Motor vehicle usage within the City of London is nearly a third of what it was in 1999. This is a result of moves like the city's Congestion Charge (introduced in 2003) and new Cycling Superhighways (introduced between 2015-16).
Cycling increased 57% from 2022 to 2024. Personal bike usage increased 36%. Shared dockless bike usage increased 4x and now makes up 17% of all people cycling. During daytime hours (7am to 7pm) cycling represents about 39% of all on-street traffic, which is nearly 2x the amount of cars and private hires. And based on current trends, cycling is forecasted to become the dominant all-around mode of transport within as soon as two years.
People walking, wheeling, and cycling now make up three quarters of all travel, up from two-thirds in 2022. This is a huge percentage.
For more data, check out the City of London's City Streets 2025 Summary Report.
Cover photo by Frans Ruiter on Unsplash
We talk a lot about mobility and traffic congestion on this blog — particularly in the context of Toronto — and that's because it remains a problem and we continue to avoid any sort of big and meaningful moves. Instead, we like to politicize the problem and find scapegoats, such as bike lanes. So I think it's important to have regular reminders that we do actually know how to address this problem. It's a choice we and other cities can make.
Here are three examples and possible solutions:
Copenhagen: Over 60% of residents use a bicycle to commute to work or school. It is one of the most bike-friendly cities in the world. You've probably heard this before and are prepared to say, "yeah, well, we're not Copenhagen." But it's important to point out that neither was Copenhagen. In the early-to-mid 70s, the modal split for bikes was somewhere between ~10-15%.
Singapore: This is one of my favorite examples. Singapore is home to the world's first congestion charge zone (1975). And it operates on a dynamic pricing model, meaning that traffic congestion is continually monitored and road prices are adjusted to ensure that traffic always flows at certain minimum speed. It's a highly effective tool and there's no shortage of global case studies. Here's Miami.
Zurich: Despite being one of the wealthiest cities in Europe, car ownership is relatively low (~40-45% of the population, compared to ~60-65% in Toronto). This is due to a great public transit system (Swiss trains and stuff) and because of strict parking policies, among other things.
Zurich has a hard cap on the number of parking spaces in the central part of the city. It is set at 1990 levels, which works out to about 7,600 total parking spaces. What this means is that if somebody, like a big bad developer, wants to build off-street parking, they need to simultaneously reduce the parking supply somewhere else. You can't exceed the cap.
This obviously discourages car usage and moderates the demand for city streets, but it also serves as a clever way to slowly replace on-street parking with better uses, such as an enhanced public realm. This policy has been in place since 1989 and it has had a dramatic effect on car usage. Between 2000 and 2021, the share of car trips in the city decreased from 40% to 29%.
I know that many of you will scoff at these solutions and think "yeah, there's no way." But this is how you make traffic better. You reduce demand and use our finite amount of road capacity more efficiently. So we can either make bold moves or we can continue to complain about traffic.
Cover photo by Claudio Schwarz on Unsplash