What happens to Jakarta if a major intersection fails? A flood, an earthquake, a single point of collapse—how much does the city break?

This analysis models Jakarta's transportation network as a graph, treating intersections as nodes and roads as edges. Using betweenness centrality, we identify which intersections carry the most weight—where the highest number of shortest paths converge. The answer: the intersection near Wisma Mandiri, through which 8% of all possible routes flow.

We then stress-test the network. Remove the most critical node. Recalculate. Remove the next. Repeat 40 times. The result: Jakarta's road network is not robust. Most eliminations produce statistically significant increases in travel distance—longer detours, more congestion, compounding delays.

Other findings: Jalan Kramat Kwitang's notorious traffic finally explained (8 of the top 10 critical intersections sit on that corridor). Jakarta splits into west and east under stress. And critically—only 7 of the 41 most important intersections are within 500 meters of a fire station.

The data is public. The methodology is reproducible. The implications are for the city to decide.