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KeoScoot, the electric maintenance trolley that speeds up tunnel interventions

KeoScoot is an autonomous electric maintenance trolley designed to carry out rapid interventions on railway tracks. Intended for networks where the average distance between stations is significant, it allows an operator to quickly reach an incident or inspection area in the heart of the infrastructure, without depending on constraints linked to road traffic at surface level. Developed by the Keolis Group to meet the specific needs of the Grand Paris Express, KeoScoot provides a concrete response to the operational and maintenance challenges of modern rail networks.

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Posted

MAY. 31, 2026

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Challenges: fast and safe access on the Grand Paris Express

On the new Grand Paris Express lines, trains run without staff on board and stations are on average more than three kilometres apart. In the event of an incident or infrastructure inspection, reducing access time to the section between stations is crucial to limiting the impact on passenger service and containing the risk of knock-on incidents, particularly when passengers who have disembarked onto the tracks must be secured quickly. In this context, the need emerged for a lightweight, autonomous and rapidly deployable intervention solution. Launched at the end of 2020 and developed with partner KILOW, KeoScoot has gone through three generations of prototypes tested on six different infrastructures, with the latest iteration laying the foundations for series production to equip the first Grand Paris lines.
KeoScoot, a lightweight and easy-to-transport vehicle

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KeoScoot, a lightweight and easy-to-carry vehicle

KeoScoot solution: battery-powered electric trolley for interventions and inspections

KeoScoot is a vehicle that is easy to set up on the track. At the heart of its development, weight reduction was the main challenge, in order to ensure operational compatibility with use by a single person in the complex environment of railway tracks. This reduction was made possible by finely optimising dimensions to limit bulk, and by using lightweight materials, in particular a carbon structure. The integration of dedicated handles and gripping points also makes it easier for a single operator to handle.

In operation, KeoScoot makes it possible to quickly reach a stopped train, a switch, or a section of track to be inspected, independently of road congestion and surface constraints. Its rapid deployment and speed help reduce incident resolution times and improve service availability, while containing the risks of knock-on incidents. Originally designed for emergency interventions, KeoScoot is also suitable for inspections and maintenance operations. Initially conceived for the Grand Paris Express, it is intended to be compatible with many railway environments in France and internationally.

KeoScoot rollout: industrialisation and feedback

The next step is to launch series production to equip lines 16, 17 and 18 of the Grand Paris Express, which Keolis will operate on behalf of Île-de-France Mobilités. This ramp-up will be accompanied by continuous feedback from the field, aimed at refining KeoScoot’s ergonomics, maintenance and integration into operating procedures, in the interest of ever more reliable and innovative mobility.

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