Abstract
The purpose of this study is elusidation of the mechanism and naure of complicated passenger flow. As a first step of the study, in this treatise, the mechanism of cross flow is investigated by observation at a concourse of a commuting train station in Tokyo and by study on a mechanism model on the other hand. The main results found out are as follows. (1) Basic mechanism In crowded cross flow, passengers form groups gathering by common destination. (2) Territories of groups The territories of groups of both flow form a sort of striped pattern in turn. The stripes has the inclination relating to the crossing angle of the flows. And, that inclination acts an important part for the smoothness of mutual crossing of two flows. (3) Velocity of flows It can be said that there is no difference between the velocity of two flowsunws unless there is wide difference between them in population in the crossing. (4) Density and total flow rate. It is possible that in everyday condition, the population density may rise to 1.5 (person/m^2). And, density of 3.0 is also possible temporally and partially. The total flow rate of two flows in the crossing can reach nearly the maximum of the flow rate of one direction flow.
