Urban Systems Thinking
Dependencies, service levels, capacity, redundancy, maintenance and system-wide decision making.
A city is a system of systems
Cities work because many networks—water, transport, power, communications, waste, land and public services—operate at the same time and depend on one another.
GuideHow to map dependencies between urban systems
A dependency map starts with a service, identifies what it needs to operate, and then traces second-order dependencies.
GuideUrban service levels: availability, capacity and quality
A city service can exist physically yet still perform poorly if capacity, reliability, access or quality is inadequate.
GuideWhy peak demand matters in cities
Urban systems often need to handle short periods of much higher demand than their daily or annual average.
GuideWhat redundancy means in urban networks
Redundancy means having alternative capacity, routes, equipment or operating arrangements so one failure does not automatically stop a service.
GuideHow maintenance backlogs affect city systems
Deferred maintenance can turn small asset problems into service reliability problems across a network.
GuideHow cascading failures can move through a city
A disruption in one system can create secondary failures when other services depend on it.
GuideService equity is an urban-systems question
Network maps and average service levels can hide neighbourhoods where access, reliability or affordability is much worse.
GuideChoosing indicators for urban systems
Useful indicators connect a policy goal to a measurable service outcome rather than counting technology for its own sake.
GuideScenario thinking for urban systems
Scenarios help planners ask how networks behave under growth, disruption or policy change without pretending one forecast is certain.