Infrastructures in Paris

Paris is very known for being a very big and a very technological city. As a worthy city of that
title, it's very hard to know how Paris works. Its more important infrastructures are the transport ones.
Those include metro transport, bus transport, train transport, ship transport, air transport, taxies..
 Paris Underway is a railway net which length is 214 km, a figure which put L'Île de la cité's
underway longitude as the third one of the Western Europe. Those kilometters are divided into 16 lines. The central point of the net is Châtelet-Les Halles, which is the biggest underway station of the world. Five underway lines, Three RER (Réseau Express Régional) lines and some bus routes join there. It works with pneumatic technology, something used in other underways as the Mexico D.F. Or Santiago de Chile ones. The underway service became open in 1900, with the Olimpic Games of Paris. Only the line nº1 got open, and lines 2 and 6 were pointed as possibly
future lines.
Lines 1 to 10 were built by Paris city and administrated by the “Compagnie du Chemin de Fer
Métropolitain de Paris” (CMP). A second company called the “Societé du Chemin de Fer Electrique
Nord-Sud de Paris” (Known as Nord-Sud) started in 1910 the building of two lines which were called in
that time A and B. However, now those lines are the 12 and 13 lines. The Nord-Sud joined the CMP,

and later CMP became a statal possession and changed its name to the Régie Autonome des
Transport Parisiens. The latest line built is the number 14, opened the October 15th of 1998, which has
trains electrically controlled.
 Paris is connected with the rest of Europe thanks to a very big net of highways and the Train à Grande Vitesse, also called TGV. There are direct lines from Paris to London, Strasbourg and Stuttgart. The most used one is the line between Paris and Lyon, a reason that is making that TGV enterprise think to built a new line between those cities. They're even thinking in make a line between Paris and Barcelona, over all a good new for Spain.

Since 2007, something called Vélib' started. It's a bike renting service in Paris. It rent's 20,000 bicycles in 1202 stations. It's a concession by JCDecaux, a french advertising corporation. In the stations, electrical rental terminals unblock the bike you choose in the terminal, and users have to pay a subscription for the service, having, then, the first half hour of service for free.
Bus lines connect every place of the capital, over all because they're the most developed sorts
of transport in Paris. Since some time, special lanes for taxi and bus are being created. Even barriers
are being put to isolate the special lane from the ordinary lane.
 In Paris are located two of the more crowded airports in Europe. These are the airport Charles de Gaulle and the Paris-Orly one. Charles de Gaulle's airport is also known as the Roissy's airport due to his proximity to Roissy. Building the airport took about 10 years, and today, it supports 63,000,000 passengers a year. It's administrated by the private society "Aéroports de Paris". As a 2004 study says, Charles de Gaulle's airport is the second most crowded airport in Europe, only behind Heathrow's airport in London. It's connected to RER and TGV's net. It has got a surface of 32.38 square kilometers, and it's divided into 3 departments and 7 communes. Paris-Orly Airport is very big: It has a 15.3 square kilometers surface. It has a piece in Orly, and another in Paris. It flights to Europe, Africa, North America and the Middle East and, by a 2010's study,  25,204,000 passengers  travel here every year.

 As a negative thing, Paris citizens pass an average of 70 hours a year blocked in highways
due to the huge population density. As a way to achieve the uncongestion of Paris, most of parkings
are payable, collective ways of transport have their own roads and “pistes cyclables” are more
common every time. However, until the moment this isn't more than a dream.