Le Tacot Pontoise-Poissy
In 1912 was built a 1,435 mm (4 ft 8 1⁄2 in) railway line from Pontoise to Poissy. This line linked all the towns and villages along the River Oise to Andrésy and Poissy. The Chemins de fer du Département de Seine-et-Oise wished to link the lines from Paris with a circular line following the river, for technical and economic reasons, the line was built following the meandering river to prevent the building of tunnels and large viaducts. The line was always regarded as a tramway as some portions of the line ran on roads. The journey from Pontoise to Poissy took 1 hour and 20 minutes.
Passenger traffic was never the line's forte so the company tried to generate freight traffic to Paris. Vegetable farmers (maraîchers) transported their stock to Les Halles in Paris by connecting services.
Car and lorry transported killed the non-profitable line and it closed during 1929.
Read more about this topic: Compagnie Des Chemins De Fer De Grande Banlieue