KLP has been used to analyse location planning of elevators at subway stations considering transfer resistances
(Kishi, K., Hino, S. and Satoh, K., 2003).It also evaluates the reasonable transfer distance at urban rail stations
(He Jing, Liu Zhigan and Sun Youwang, 2010). Similarly, KLP has been applied to the rail connection behavior
analysis to quantize mental acceptability limit of walking distance and time to urban rail stations. For people who
walk to rail transit stations, less distance and time is better, and therefore the key of the study is to find out the
ideal and longest distance people can bear. Here the distance is equivalent to the price, as "far, near" being the
"expensive, cheap" and "choose walking as feeder mode" being "to buy".