RATP (Paris Public Transport Company)
URL: https://knowledge.ivjn.us/en/concepts/ratp.html

RATP (Paris Public Transport Company) is a French state-owned enterprise that operates the Paris Metro, parts of the RER lines, most trams, and part of the bus network in Île-de-France.

## Overview

The Paris Public Transport Company (Régie autonome des transports parisiens, RATP) is a commercial public institution established in 1948, responsible for operating public transportation in Paris and its surrounding areas. Its sole shareholder is the French State.

## Business Scope (Île-de-France)

- **Paris Metro**: operates all 16 lines, with a total of 302 stations and approximately 206 kilometers of track;
- **RER**: Lines A and B (Line B jointly operated with the French National Railway Company, SNCF);
- **Trams**: 8 of the 11 tram lines in Île-de-France, totaling approximately 105 kilometers;
- **Buses**: through its subsidiary RATP Cap Île-de-France, operates about 4,800 buses for the Île-de-France Mobility authority (Île-de-France Mobilités).

## Group

Through RATP Dev and RATP Cap Île-de-France, the group also operates public transport networks in mainland France and overseas (London, Casablanca, Riyadh, etc.). Since the 2020 reform and the Mobility Orientation Law, peripheral Paris bus services have gradually opened to competition, while Île-de-France Mobilités remains the transport authority.

Updated: 2026-10-31

Sources:
- RATP — Wikipédia https://fr.wikipedia.org/wiki/RATP
- RATP Group — RATP en Île-de-France https://ratpgroup.com/the-ratp-group/entities/ratp
- Île-de-France Mobilités — Site officiel https://www.iledefrance-mobilites.fr