A special device must be installed in order to compile actual timetables of a public transportation facility, and the present invention relates to a method and system for compiling actual service across a plurality of transportation facilities in a wide range by estimating arrival times and departure times for cars and and/or railcars from usage status information of a user such as boarding location, boarding time, alighting location, and alighting time collected by a transportation system IC transit card, etc. when a public transportation facility is used, and generating a timetable for indicating actual service.
Please help me write a proper abstract based on the patent claims. CLAIM: 1. A transportation analysis system using a database including a transit log in which a user ID, a boarding day and time, an alighting day and time, a boarding position and an alighting position are associated with one another and a line master in which a line ID and station-to-stop information are associated with each other, the system comprising: a single line estimating unit in which the transit log and the line master are extracted from the database, the presence or absence of a line ID including the boarding position and the alighting position associated with the transit log is confirmed on the basis of the line master and, if the presence is confirmed, single line estimating information associating the confirmed line ID and the transit log with each other is generated and stored into the database; and a departure/arrival timetable estimating unit that extracts the line master and the single line estimating information from the database, calculates, on the basis of the line master, the distribution of the number of alighting persons in the alighting position contained in the single line estimating information, calculates an arrival day and time and a departure day and time on the basis of the calculated distribution of the number of alighting persons, generates a departure/arrival timetable ID associated with each of the alighting position, the calculated arrival day and time and departure day and time and the line ID, and stores the ID into the database. 2. The transportation analysis system according to claim 1, further having: a passenger number calculating unit that extracts, from the database, the transit log and the departure/arrival timetable ID, identifies a boarded train by figuring out a transit-permitting route on the basis of the departure/arrival timetable ID from the combination of the boarding position, the alighting position, the boarding day and time, the alighting day and time contained in the transit log, calculates the number of passengers on the boarded train, and stores the number into the database. 3. The transportation analysis system according to claim 2, wherein the database further has passenger capacity information on boarded trains on each line, and a crowdedness rate calculating unit that, using the number of passengers calculated by the passenger number calculating unit and the passenger capacity information, calculates the crowdedness rate of the boarded train is further provided. 4. The transportation analysis system according to claim 3, wherein the database further stores weather information associated with day and time information, and a predictable crowdedness rate calculating unit that, using the crowdedness rate calculated by the crowdedness rate calculating unit and weather information stored into the database, figures out a crowdedness rate pattern and calculates a predictable crowdedness rate on the basis of the crowdedness rate pattern is further provided. 5. The transportation analysis system according to claim 4, further having: a display unit that extracts, from the database, the departure/arrival timetable ID and the crowdedness rate or the predictable crowdedness rate in individual station-to-stop information of the line master and displays the ID and the rate on a screen. 6. The transportation analysis system according to claim 5, wherein the database contains a planned timetable, and the display unit further displays the planned timetable. 7. The transportation analysis system according to claim 6, further comprising: a deviation-from-timetable calculating unit that calculates deviations from timetables on the basis of the difference between the planned timetable and the departure/arrival timetable ID. 8. The transportation analysis system according to claim 4, further comprising: an input unit that accepts inputs of a departure point and a destination, and a route searching unit that, on the basis of the departure point and the destination of which the inputs were accepted, searches the line master to extract station-to-stop information matching each, calculates a predictable crowdedness rate with respect to the station-to-stop information, and makes the rate a predictable route crowdedness rate, wherein the display unit displays the predictable route crowdedness rate on the screen. 9. The transportation analysis system according to claim 8, wherein the line master in the database contains fare information associated with the station-to-stop information; the display unit displays the extracted matching station-to-stop information on the screen; and the input unit accepts an input to choose the displayed matching station-to-stop information, the system further comprising: a detail display unit that, on the basis of the station-to-stop information of which the input was accepted, extracts related fare information from the database and displays the information on the screen. 10. The transportation analysis system according to claim 8, further comprising: a transfer evaluating unit that calculates a transfer-permitting time length from the departure/arrival timetable ID and evaluates a transfer evaluation level on the basis of the transfer-permitting time length and the number of passengers. 11. The transportation analysis system according to claim 10, wherein the transfer evaluating unit further figures out the direction of transfer from the departure/arrival timetable ID, and the display unit displays the direction of transfer and the transfer evaluation level on the screen. 12. The transportation analysis system according to claim 8, wherein the database further stores map information; and the display unit displays the map information, the predictable crowdedness rate, the station-to-stop information and the number of passengers on the screen. 13. The transportation analysis system according to claim 3, further comprising: an input unit that accepts inputs of any or all of the line master, the number of passengers and the passenger capacity and stores it or them into the database. 14. The transportation analysis system according to claim 3, further comprising: an input unit that accepts inputs of operating state information and stores the information into the database, wherein the departure/arrival timetable estimating unit, using the operating state information, generates the number of passengers or travel time associated with the line master or individual station-to-stop information.