Why MTR underground train transportation needs to know passenger behaviourUnderstanding individual passenger behaviour is essential for the design MTR transportation, because who can choose to catch bus, taxi, tram, train ferry etc. different kinds of public transportation tools. Individual traveler who decides to catch which kinds of public transportation tools, it depends on whether the public transportation tool can provide real time travel information, liking link travel time schedule. So, any country's (MTR) mass transit railway transportation enterprises need to understand where it has terminal to give convenience to the local living areas of time travelers to choose to catch MTR easily. Although, MTR ticket fare is one factor to influence any passengers choice. But, those other factors can also influence them to choice. e.g. MTR any terminal location of convenience, short time travelling, none crowding in busy (peak) time, MTR platform waiting arrival time, none sudden MTR engineering machines broken accident events occurrence frequently etc. different factors, any one of these factors which can influence passengers who choose to catch MTR or other kinds of transportation tools.Why route choice can influence passenger behavioural choiceUsually, the busy time passengers will regard the route choice as a coordination problem to influence them to choose to catch which kinds of transportation tools. The route choice is as an opportunity costs to influence any busy time passengers to decide to choose to catch which kind of transportation tool which is the best right choice in the right time among of them. In the short time, for example, it seems any busy time passengers will choose to catch bus to substitute MTR underground train transportation tool, due to who feels the bus can arrive any destinations to compare other kinds of transportation tools in the most short time. However even if the MTR can either charge cheaper ticket fare to sell full day or charge discount ticket fare to sell in the busy ( peak) time to compare to bus fare. It is possible that the busy time passengers will still choose to catch bus, if between the bus terminal and the another bus terminal that distance is the shorter time route to spend time to arrive destination to compare between the MTR terminal to the another MTR terminal arrival time . Also, although the busy time passengers will feel to enounter traffic jam to influence sitting or waiting bus time to be longer time in possible and who also feel MTR can avoid traffic jam problem. However, usually any busy (peak) time passengers will feel the chance of traffic jam occurrence will be less. So, the short bus route choice is more potential factor to influence the busy (peak) time passengers still to choose bus to catch.However, if anyone wants to investigate results of day-to-day route choice which can be transferred to more realistic environment. It is necessary to explore individual behaviour in an interactive experimental set up to ensure busy (peak) time passenger transportation behavioural choice. For example, a passenger has a choice between a main road (M) and a side road (S) for travelling from (A) to (B). (M) is faster if (M) and (S) are chose by the same number of passengers. So, this method can be researched whether MTR terminal station is located at the main road (M) or the side road (S) where is more suitable to accept to passengers generally.Why trip time reliability and crowding factors can influence MTR passenger choice.