Editing Simplon station (section)

===2005 fire===
On 6 August 2005, at 16:42, as a southbound MP 59 train heading to [[Porte d'Orléans (Paris Métro)|Porte d'Orleans]], the then southern terminus of the line, was entering the station, the driver noticed smoke coming out from under the fifth car of a northbound train at the other platform, heading to [[Porte de Clignancourt (Paris Métro)|Porte de Clignancourt]]. He alerted the controllers of the line, leading to the traction current being cut out and an evacuation being ordered (because of the risk of the fire spreading to other cars, as well as to the other train, now parallel to the fire).

A few minutes later, however, the fire reached the fifth car and spread to the second train. Firefighters, who arrived on the scene very quickly, started to extinguish the fire, which they described as very impressive. The fire was under control around 18:00. It was the combination of a malfunction of the JH electromechanical starting equipment, leading to a blockage of a traction element in the "maximum acceleration" position, as well as a latent failure of a circuit breaker. The rapid rotation of the wheel while the train was stationary caused the tire to overheat, burst, and trigger a fire. The fire revealed an insufficient level of smoke clearance on this portion of the line.

As a result of the fire, the smoke and difficulties in effectively clearing the station lead to suspension of traffic on line 4 between [[Porte de Clignancourt (Paris Métro)|Porte de Clignancourt]] and [[Réaumur – Sébastopol (Paris Métro)|Réaumur-Sébastopol]], evacuation of the [[Marcadet – Poissonniers (Paris Métro)|Marcadet – Poissonniers]] station and, because of the connection, suspension of traffic on line 12 between [[Trinité – d'Estienne d'Orves (Paris Métro)|Trinité – d'Estienne d'Orves]] and the northern terminus at [[Porte de la Chapelle (Paris Métro)|Porte de la Chapelle]] between 17:18 and 20:59. 19 people were slightly intoxicated by the smoke (one traveler and 18 RATP agents). The burnt trains were towed to the workshops at Saint-Ouen. Traffic resumed on the whole of Line 4 the next morning at 8am, however Simplon station was not served as it was closed for refurbishment, which was completed in February 2006, at which point the station resumed operation.