Cities That Work
Density, transport and land use decide how long a city's residents spend travelling and how much energy the whole place burns. Most of the choices that fix that were made decades before anyone noticed.
What a learner can do afterwards
- Explain how density and transport choices reinforce each other in a growing city
- Compare two cities on how people get to work and say what in the layout explains the difference
- Name one planning decision that is hard to undo later and say why
1 · Read
Density and transport reinforce each other. More people close together can support buses and trains. Good buses and trains let more people live and work close together. Start any verdict with the layout: distances, jobs, stations, and roads explain which trips are easy.
Compare two cities by how workers travel. A spread out city with weak buses forces car use, so trips are long and streets clog. A compact city with strong transit keeps car trips low. Put travel data side by side, then look at the layout behind it.
Some planning decisions are hard to undo later. Roads, rail lines, and zoning shape a city for decades. Tearing them up or rebuilding them costs a fortune and displaces people. Choices made before anyone noticed still decide how long residents spend travelling.
Watch what happens when growth outruns services. Crowding, dirty air, and slums without clean water or clinics follow. Buses and trains matter because they move the most people per lane, cutting jams and fumes where cars would clog the streets.
Layout plus transit decides whether a city hums or clogs.
2 · Watch
Take it off screen
Where it sits
This opens up
Nothing builds on it yet.
Where this leads
Jobs that lean on this skill. Follow one to see everything it is built on.
8 questions wait behind this lesson, each with its answer explained. Every answer feeds the sky: stars light as they are learned, and dim when it is time to come back.