By making use of geographic information system(GIS) technology to build public transportation network model,"least transfer number" and "least travel time" for the goal of bus transfer query,a transter query system is achieved at Visual Basic 6.

The theory of the optimum query of public transportation based on the least transfers is put forward,and the algorithm to realize it is designed.

T matrix and Q matrix are introduced to discuss the path-planning problem and the least transfer algorithm is obtained.

In relation to best path in travel route, the author advances a new algorithm which has been implemented on computer and will solve least transfer in travel route.

Considering passengers travel psychoanalysis,the public traffic model of optimum route is proposed,which goal is minimal transfer times.

The paper presents two optimal trip path mod-els of bus passengers,aiming to the leas"ttransfer times" and the shortes"ttrip time"respectively,thus gets different optimal trip paths for bus passengers to choose their suitable trip paths.

In this paper,a model of optimum route with the minimal transfer times as primary goal and the minimal stops or the least payment as second goal was built.

I learn that minimum transfer times are the most powerful motive for a transit trip.

A mathematic model of optimum route with minimal transfer times as primary goal and the minimal stops as the second goal was built in the paper.