Abstract
Passengers choose the mode and path of public transport for their daily trip according to the different individual demands. The typical factors are like fare condition and trip time etc. But, the condition of comfort for passenger becomes an important factor now. At present, the applied modeling softwares begins to take account into aspect of comfort; however it still stays the beginning now. Effectively, passengers can choose the mode of public transport according to their different comfortable level. The goal of studying aims to create a new algorithm of comfort of passengers in order to reinforce the missing aspects in the actual software. The first part of the report consists in presentation a longitude aspect of comfort. In the second part has to establish a mathematical algorithm model according to the aspect of comfort defined, and then codified a calculating program by Scilab for algorithm inducted. Finally, we will give a simple numerical case to display these relations between the trip cost and the comfort of passenger.