South Korea's second city and its busiest port opened three rail lines in a single year, two of them driverless, and has been living with the arithmetic ever since. Busan is unusually rich in designations — a national pilot smart city at Eco Delta, the country's only blockchain regulation-free zone, an autonomous-driving pilot district, Korea's first fully automated container terminal — and unusually candid, in its own records, about how few of them convert into services people use. The atlas entries below include a light rail line whose demand forecast missed by 80 percent and is still being paid for, a warning system the city itself said might be wrong at launch, and a metering programme at 27.7 percent after seven years.
The atlas documents 10 projects in Busan, the earliest dating to 2011: 2 scaled back, 8 still running without a verdict. Every entry carries an evidence grade — the strongest here is independent (1 entry) — and links its sources.
Three entries that show what Busan is actually doing.
Computed from the 10 entries below — a profile, not a score.
2011 was Busan's year of driverless rail, and its most expensive lesson. Metro Line 4 opened in March, running rubber-tyred trains under K-AGT, a Korean-developed automated guideway standard, with no cab and platform screen doors at every station. The Busan-Gimhae Light Rail followed in September, driverless too but built as a private concession carrying a minimum revenue guarantee. Both worked as engineering. Line 4 became the network's least-used line; the Gimhae line drew 30,084 riders a day against the 176,358 the Korea Transport Institute had forecast, and Busan and Gimhae have paid 906.8 billion won in support since, with at least 1.09 trillion more owed to 2041.
Through the same years the city instrumented what it already had. Under national interior-ministry guidelines issued in February 2011, Busan built a CCTV integrated control centre in each of its 16 districts and counties, pooling feeds that had been run separately for crime prevention, school safety, fire watch and traffic enforcement. The seven-year rollout finished in Dongnae in December 2017 at 19.24 billion won, leaving 337 operators watching 12,759 cameras, with police situation rooms inside the centres. It is a citywide system that never became a single city control room.
Then came the designations. In 2018 the water authority started swapping analogue meters for IoT ones over its own LoRa network. In July 2019 the Ministry of SMEs and Startups made Busan the country's only blockchain regulation-free special zone, and Eco Delta City was named a national pilot smart city. In December 2019 the city launched Dongbaekjeon, a cashback card meant to keep spending at small local merchants. Each was a legal or financial instrument rather than a piece of infrastructure, and each has aged differently: the blockchain zone changed three national rules and then approved no new pilots after 2022, while Dongbaekjeon issued 1.56 trillion won in eleven months of 2025 and cut its own cashback rate whenever the budget ran short.
Disaster and freight drove the most recent decade. Three drivers died in the Choryang underpass in July 2020; the city mapped inundation risk across 201 neighbourhoods and put the result online in May 2023, admitting at launch that it had too few instruments and an algorithm untested in real storms. In April 2024 the Busan Port Authority opened Korea's first fully automated container terminal at the New Port, notable less for the driverless carriers than for the deal behind them: an entire existing dock crew was relocated from an older berth and retrained rather than cut. And in March 2026 the Osiria autonomous bus began charging a fare, three and a half years after the zone was designated.
On a time axis, by the year each one started — 2011 to 2025. Pick a dot to read what it was.
✔ Every published entry is checked against the public sources it cites before publication.
Editorial links between Busan's own entries — the city as a system, not a list.
Plans and announced trajectories — not yet documented results.
Busan's pattern is designation-rich and conversion-poor, and its own government keeps saying so. The transport ministry graded the Osiria autonomous-driving zone E, the lowest band, in December 2025, months before the buses started charging fares. The blockchain zone runs on temporary permits that expire in 2027. Remote water meters reached 27.7 percent of connections seven years after the pilot, ranging from 98.4 percent in Gangseo to 6.3 percent in Yeongdo. The floating city announced with UN-Habitat in 2021 has no site, no financing vehicle and no legal category, and lost its deadline when Busan lost the 2030 Expo. What the city does not have is any automated coastal defence: for a metropolis that floods on television every few years, Marine City's answer is a submerged breakwater due in 2027, and the flood system can tell you an underpass is filling long before it can close one.
Where Busan appears in the atlas's own analysis.
Three cities the atlas reads next to Busan — the reason first, then the entries it rests on. Chosen by hand from the Busan threads below, not counted out of them.
Neighbouring port cities that keep buying the same machine and reaching opposite verdicts: an automated line that lost its crew and got it back against one that never had one, a written-off expo shuttle against a pilot that now charges.
Both put money on a card that can only be spent where the city says, both warn about the same floods — Jakarta through loudspeakers on poles, Busan through a portal — and their metros split on whether anyone stays in the cab.
Both pay residents to change their behaviour, both run their own low-power radio network to read the city — Vienna's tracks bins and air, Busan's reads water meters — and both built a greenfield district to try the ideas on first.
Every editorial link from Busan's entries into another city, strongest first. Each one is a statement about two projects, not about two cities — the three above are the ones the atlas is willing to make at city level.
1001 Smart Cities (2026). “Smart-city projects in Busan, South Korea.” The Smart City Atlas. https://1001smartcities.org/cities/busan/ (last verified 2026-08-26). Data: CC BY 4.0.
The underlying data is free to reuse with attribution — see the open data page.