What is a road-rail truck used for, and how do you track it?

What is meant by a road-rail truck?

The term here refers to a road chassis fitted with equipment that lets it also work in a rail environment, when authorised for that use. The presence of rail wheels or a guidance device does not on its own grant the right to run on every track. The operating framework, access conditions, technical acceptance and the infrastructure manager's instructions depend on the vehicle and the network concerned.

On site, distinguish between the chassis and its road components, the road-rail conversion and the onboard tool. The manufacturer's documentation, acceptance documents and operating instructions set out the limits of each assembly. A change to the MEWP, the rail device or the loads carried may change the conditions of use; do not simply carry over the documents from a previous configuration. The /engin-rail-route guide covers the wider family of road-rail vehicles.

MEWP, crane, jetting unit: what uses?

A road-rail MEWP truck gives access to work areas at height, for example for interventions on equipment above or near the track, where isolation and safety conditions allow. A road-rail crane truck is used to handle loads or site materials within its capacity and authorised configurations. A road-rail jetting truck can be deployed for drainage or cleaning structures accessible from the track.

These examples describe possible uses, not a general authorisation to work under overhead lines or in the presence of rail traffic. Prepare each job with the site's access, protection and co-activity rules. For the MEWP, check in particular the reach, outriggers and emergency controls; for the crane, the attachment, the load chart and the stabilisers; for the jetting unit, the pipework, hoses, pumps and tanks according to their manuals. The /guides/nacelle-rail-route guide covers the MEWP configuration in detail.

What checks apply on the road side?

On the road side, track the chassis like any vehicle: tyre condition, lighting, braking, steering, fluid levels, leaks and registration documents. Check whether its registration and category make it subject to the roadworthiness test for heavy vehicles; do not infer the rule simply from the presence of rail equipment. The French public service website sets out roadworthiness test obligations for the transport vehicles concerned. Keep the test certificate and its date with the truck's record.

The tachograph records, among other things, driving and rest time for vehicles falling within the scope of road transport rules. Its applicability depends on the activity and the vehicle's characteristics, with possible special cases and exemptions: have the truck's status confirmed by a transport specialist rather than assuming it is always mandatory. If the device applies, keep the relevant records and deadlines. Work on the chassis may also require checking compatibility with the road-rail equipment.

What should be tracked on the rail components?

Inspect, according to the manuals, the rail axles or wheels, the guidance devices, their fastenings, the process for putting the vehicle on track, the braking devices and the safety features linked to travel or work. Look for wear, impact, a locking fault or a leak; note the relevant meter, which may differ from the road mileage. Maintenance work must be carried out by competent staff according to the equipment's prescriptions and the requirements applicable to the network used.

The technical document RFN-CG-MR 03 A-00-n°005 published by the Public Rail Safety Agency (Établissement public de sécurité ferroviaire, EPSF) distinguishes, for the works vehicles within its scope, checks relating to travel from those relating to work. It must not be applied without first checking that the truck concerned actually falls within that scope. Ask the infrastructure manager and the safety manager which documents and checks are required for your vehicle. Keep proof of acceptance and inspection together with the instructions in force, rather than a generic list attributed to SNCF Réseau.

Is a VGP enough for the equipped truck?

No. The periodic general inspection (VGP) of a lifting appliance covers that appliance and its hazardous faults; it replaces neither the road chassis check, nor the rail checks, nor the maintenance scheduled by the manufacturers. An onboard MEWP or crane requires identifying the regulatory inspections applicable to its configuration. The exact interval and scope must be confirmed with the inspection body, in particular after a modification, a major repair or a change of configuration.

Keep the reports, their observations and evidence that findings have been closed. Attach each document to the right part of the vehicle: a MEWP report does not prove that the rail wheels have been inspected. The /vgp-engins-rail-route page covers this topic in more detail. If in doubt about fitness to return to work, immobilise the function concerned and call on competent people.

How do you prepare a road-rail truck hire?

For a road-rail truck hire, describe to the rental company the track targeted, the access, the work to be done, the expected loads or heights, the energy constraints and the length of the mission. Ask for the exact configuration, its limits and the documents needed to operate on the network concerned. Check who provides trained operators, who organises transport and how faults found on handover are dealt with. Do not book equipment on the strength of a photo or a commercial name alone.

On receipt, compare the truck's identification against the manuals, inspection reports and acceptance documents. Carry out a visual condition check of the chassis, the onboard tool and the rail components, then log any findings. Schedule servicing during the mission while keeping engine hours, tool hours and mileage separate where these figures exist. A single record with separate deadlines helps avoid a missed check; the /guides/maintenance-engins-rail-route guide sets out the general tracking framework.