The accident remained a classified military secret for many years.
At the time, the French military enforced silence on the French press, which reported little or nothing about the accident because it implicated French officers.
The daily 'Le Figaro' devoted only 21 lines to the accident on 17 December, four days after the accident.

A court-martial was called to try six employees of the PLM (Paris–Lyon–Mediterranée) railway.
They were acquitted.

In June 1923 the Minister of Defense, André Maginot, inaugurated a monument to the victims in the cemetery of Saint Michel de Maurienne.
In 1961 the remains of the victims were transferred to the national military cemetery of Lyon-La Doua.
On 12 December 1998 a monument was inaugurated at the La Saussaz site, near the site of the accident.

The derailment remains the greatest rail catastrophe in French history.
It also remains the second greatest rail catastrophe in the entirety of world history in terms of accurately known casualties, superseded only by the 2004 Sri Lanka tsunami train wreck.
This also makes the Saint-Michel-de-Maurienne derailment the deadliest railway disaster in world history that occurred as a result of an operational accident rather than being caused by a larger ongoing natural disaster.
The accident remained a classified military secret for many years. At the time, the French military enforced silence on the French press, which reported little or nothing about the accident because it implicated French officers. The daily 'Le Figaro' devoted only 21 lines to the accident on 17 December, four days after the accident.
A court-martial was called to try six employees of the PLM (Paris–Lyon–Mediterranée) railway. They were acquitted.
In June 1923 the Minister of Defense, André Maginot, inaugurated a monument to the victims in the cemetery of Saint Michel de Maurienne. In 1961 the remains of the victims were transferred to the national military cemetery of Lyon-La Doua. On 12 December 1998 a monument was inaugurated at the La Saussaz site, near the site of the accident.
The derailment remains the greatest rail catastrophe in French history. It also remains the second greatest rail catastrophe in the entirety of world history in terms of accurately known casualties, superseded only by the 2004 Sri Lanka tsunami train wreck. This also makes the Saint-Michel-de-Maurienne derailment the deadliest railway disaster in world history that occurred as a result of an operational accident rather than being caused by a larger ongoing natural disaster.
Saint-Michel-de-Maurienne derailment