Case+Studies

-Public Transport in Mexico City-
 * Mexico City** (Ciudad de México, México, D.F.) is the capital of México, It is the most important economic, industrial and cultural center in the country, and the most populous city with 19,231,829 habitants in 2005.

Population 2005: 19,231,829 Density: 5,741/km² (14,869.1/sq mi)

Transportation around Mexico City is considered to be the best in this area. With a characteristic network of extremely cheap bus and metro services, traveling in Mexico City is quite pleasant and convenient. Mexico City is served by the System of Collective Transport Metro, an extensive metro system (207 km), the largest in Latin America, the first portions of which were opened in 1969.

The objective of the case is to gather all the information about the public transport in Mexico City. Using “prologa” the decision tables will be created to facilitate and interpret the information. Finally with “prologa” the results will be generated with the “consultation” function that should show the price of the tickets according to the transportation chosen.

The public transportation in Mexico City is a complex structure based on different kinds of transport. To go inside of the city you can use Metro, Metro-Bus, Trolley-Bus, RTP, Microbus, Turi-Bus and Taxi.

The prices setting for tickets are based on the age of the passengers, the route distance, the time of the trip and the kind of transportation chosen.

Rules can be represented graphically in multiple ways for usability purposes. Decision Tables are primarily used for decision purposes. Therefore using Decision Tables this transportation case can be solved for any of the parameter mentioned here. e.g. The Price of the ticket depends on the:

Region to be traveled. (Distance traveled in Kilometers). The time of the day when one travels (Day=6:01 a.m. to 22:59 and night=23:00 p.m. to 6:00) e.g. time restriction is applicable for Taxi. Time zone is different for other services. The choices of doors of a Taxi also limit the Price of the ticket e.g. 2 door. 4 door taxis, radio taxi or tourist taxi. Days of the week also restrict the Ticket Prices. For example rates during Mondays to Fridays are different from that on Saturdays, Sundays and holidays. Almost in all transport facilities, the age of the passengers is an important consideration for ticket prices e.g. for Turibuses there is consideration of the ages of Adults, old aged and children. The information in detail to each kind of transport is the following: Inside of Mexico City there are seven important kinds of transportation. The transportations of Metro, Metro Bus, Trolley Bus and RTP have the same method of payment and the cost is fixed.
 * INSIDE**

Metro: Metro Bus: Trolley Buses RTP Micro Buses: Turi Buses:

The service is paid per person according to the number of days in which they want to use it, (1, 2 or 3 days) and the advantage of the service is that you can get on and off as many times as you wish at points of interest with no additional cost on those routes.

To travel outside of Mexico City it is important to consider that Mexico City has 4 different bus stations: 1. The central / North – Cien Metros 2. The central / East – Tapo 3. The central / West – Observatorio 4. The central / South – Tasqueña
 * OUTSIDE**

Also in Mexico City there are 5 important brands of buses and each brand has more than 10 kinds of bus lines.

The condition in this case is that not all the brands of buses have the origin in all the bus stations of Mexico City, and the destination is different, it depend on many factors like the distance, kind of trip (simple or double), category (first class, economic class, etc.), kind of trip (direct or with stopped), discounts (students, older people or if travel frequently and accumulate km, etc.).

The following graphic shows simple information to make the fast table to the case “Public Transport in Mexico City”.