Colombia

What the record shows

Colombia is where somebody built the comparison group. Across this atlas the usual evidence for an urban intervention is a before-and-after number published by the body that built it; in the Colombian record, four separate entries carry evaluations with a counterfactual, and the discipline shows most clearly in what those evaluations were willing to report as a null result. That is the through-line, and it makes this one of the few national records here where you can ask what actually worked and get an answer that was not written by the operator.

TransMiCable is the model. A gondola of about 3.3 km has linked the hillside settlements of Ciudad Bolívar to the trunk network since December 2018, inside the same fare — and researchers surveyed 2,052 adults there and in a comparable hillside district with no cable car, before and after opening. Self-reported one-way travel time for mandatory trips fell from 110 to 90 minutes. Against the control district, quality of life rose significantly for women and not significantly for men; moderate-to-vigorous physical activity did not change at all; and people made more trips without more contact between income groups. An operator's brochure would have published the first of those findings and none of the rest. Medellín's Metrocable, the older sibling and one of the most-cited urban transformations anywhere, rests on the same kind of work: between 2003 and 2008 the homicide rate fell 66 per cent more in neighbourhoods served by the first line than in comparable control neighbourhoods. Medellín's camera network has a quasi-experimental study tracking installations from 2013 to 2018 that found a 26 per cent drop in violent crime and a 17 per cent drop in property crime within 120 metres of a camera, with no measurable displacement — and the entry immediately adds the caution that this does not explain the city's much larger, multi-decade homicide decline, which has many non-technological drivers.

Set that beside Bogotá's command centre and the contrast is the argument. The city says it now watches about 13,000 public and private feeds and has added plate recognition, having added 1,676 feeds in two years — while 1,367 of the 5,824 cameras it owns outright, 23.5 per cent, were out of service in May 2026 on a councillor's right-of-petition response, and the city's own comptroller had earlier found roughly 45 per cent out of service under a previous maintenance contract. No published evaluation — academic, audit or police — says whether any of it moves crime, clearance rates or response times. Integration is cheaper to announce than maintenance is to perform. Two Colombian cities, two camera networks, and the difference between them is not the hardware but whether anyone commissioned a study.

The country also supplies the atlas's sharpest illustration that publishing a number daily is not the same as being bound by it. When the reservoir system supplying about 70 per cent of Bogotá's water fell to roughly 16.5 per cent of capacity, the utility cut supply for 24 hours at a time to nine rotating zones from April 2024, publishing reservoir levels and the zone calendar every day. No decree set a reservoir threshold; the mayor and the utility decided. Consumption fell measurably and rebounded once the cuts stopped. The only reading that automatically produced a consequence was the household meter, and that consequence landed mostly on the poorer strata — which is the same finding, arrived at independently, as Cape Town's, where the celebrated Day Zero date actuated nothing and the device that physically closes a valve went disproportionately to indigent households. Two droughts, two continents, one lesson about which number is load-bearing.

Where Colombia legislates rather than measures, it does so unusually precisely. Bogotá's petitions system routes every district entity's citizen requests through one channel, and what gives a filed request teeth is national law: the right of petition is constitutional, and a 2015 statute sets the clock at fifteen days for a general petition, ten for information, thirty for technical consultations. A late answer is a disciplinary matter, not a missed service target — a distinction most complaint desks in this atlas cannot draw. The harder problem is what the answer contains, which is why the city scores entities on coherence and clarity alongside the clock. Pico y Placa shows the same instinct applied to a rationing rule and producing an uncomfortable answer: after Bogotá began selling exemptions, the best evaluation of the reform finds average speeds fell about 9 per cent while annual welfare still rose, because the buy-out moved road access from richer drivers to middle-income ones. Selling exemptions turns a rationing rule into a revenue stream, and the two purposes pull apart.

The remaining entries are about who holds what. TransMilenio opened in December 2000 and delivered metro-scale throughput within two years on concrete, prepaid stations and level boarding alone — a peer-reviewed measurement put the busiest trunk section near 43,000 passengers an hour in one direction. Bogotá built the corridor first and the control room last: unified ticketing reached every station after fifteen years, an integrated control centre after twenty-five, by which time crowding and fare evasion had already become the story. The fare card is run by a concessionaire, and three tribunals kept its revenue whole while leaving the fare-evasion loss with the public agency — outsourcing collection is not the same as outsourcing the risk. The bike share was tendered as economic use of public space, so it costs the city nothing and pays in bike parking rather than cash; it also leaves the city with nothing to govern, since the bikes, the docks and the only live data feed all belong to the operator. And the bicycle register, compulsory since 2022 but backed by nothing heavier than a police warning, recovers bicycles it can only return if they were entered — of those recovered up to early 2024, roughly three quarters were not. If the entries below agree on one lesson, it is that Colombia has been willing to find out, and that the entries which look weakest here are simply the ones nobody measured.