Each bus line number starts with for
Noctilien followed by a two or three digit number: • 2 digits starting with "
N0" for the two "circular" routes • 2 digits starting with "
N1" for the "transversal" routes • 2 digits starting with "
N2" for buses running from
Châtelet • 2 digits starting with "
N3" for buses running from
Gare de Lyon • 2 digits starting with "
N4" for buses running from
Gare de l'Est • 2 digits starting with "
N5" for buses running from
Gare Saint-Lazare • 2 digits starting with "
N6" for buses running from
Gare Montparnasse • 3 digits starting with "
N1" for the long-distance buses running to the outer suburbs. ==References==