The RER B is one of the five lines in the
RER urban rail system serving
Île-de-France région, notably
Paris and its agglomeration.The line runs from Robinson (
B2) and Saint-Rémy-lès-Chevreuse (
B4) to Aéroport Charles de Gaulle (
B3) and Mitry-Claye (
B5)First inauguration :
December 9,
1977Length : 80.0 km (49.7 miles)Number of stops : 47Traffic (2004) : 165,100,000 journeys per annum (figure only for the RATP section of the line)
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