La Petite ceinture vue de la rue de Bagnolet (XXème)

The "little belt" was a former public transportations line which ran around Paris, like a belt. It had been abandonned in 1934 even if the RER C uses it partly for a short while in the North Western part of Paris and soem RER C stations like Boulevard Henri Martin or Porte Maillot are former Little Belt train stations.

this circular trafic was replaced by busses PC1, PC2 and PC3 (PC stands here for Petite Ceinture) and the Highway belt for the car riders.

Some associations are fighting for a revival of this train now that Paris misses a circular transportation.