Why does the world behave this way?
How the World Works
Understand the forces connecting nations, cities, population, transport, the economy and policy.
Economy and public finance
Understand the cycle linking economic activity, public revenue, expenditure and transport investment.
How the economy fits together
Follow the cycle connecting population, travel, transport service, economic activity and public finance.
GDP, population and development
Understand how population, national capabilities, resources and transport service combine into economic activity.
Where public money comes from
Understand recurring support, service-related revenue, one-time funding and borrowing.
What your transport network costs
Understand construction, maintenance, operations, depreciation, overhaul, upgrades, demolition and debt service.
Travel demand, traffic and capacity
Understand how passenger and freight demand becomes routed traffic, congestion and transport service.