Abstract
Transportation network interruption seriously influences not only passenger transport but freight transport as well. Further, It adversely affects regional economic activitiy. Because among the adverse effects of transportation network interruption, regression of regional economy due to freight traffic decrease is most serious, the authors aimed to develop a method for measuring the amount of economic impacts caused by transportation network interruption. We created a method to calculate the amount of economic impacts by using an inter-regional input/output table. The developed method was applied to an actual case in Hokkaido, the interruption of rail freight transportation caused by Mt. Usu eruption. As a result of the calculation, the total damages in Hokkaido area were estimated to be 78 billion yens including those resulting from the ripple effects. The damages for agriculture and food industries were more serious than those for other fields.
