transportøkonomi
Transportøkonomi, or transport economics, is the study of how transportation systems allocate scarce resources and influence the movement of people and goods. It combines economics, engineering, geography, and urban planning to understand the behavior of transport demand and the performance of transport supply. The core concerns include travel time, reliability, safety, capacity, and the costs and benefits of different modes and networks. A central theme is efficiency and welfare: how to maximize social welfare by weighing benefits such as reduced travel time and improved accessibility against costs including construction, operation, congestion, accidents, and emissions.
Externalities are a defining feature: individual travel decisions impose costs or benefits on others. Transport economists
The field addresses mode choice and modal shift, urban form, and land-use interactions. It places increasing