The physical challenges of maintaining transport networks
The workers who maintain transport networks — whether rail, Luas, tram or road infrastructure — do some of the most physically demanding jobs there are. Behind every overhead line inspected, every rail replaced and every tunnel cleaned, there are men and women whose bodies are put under severe strain, day after day. It is precisely in this context that the transport network maintenance exoskeleton is now establishing itself as a concrete and effective solution.
Strenuous postures and difficult environments
Maintaining transport infrastructure imposes postural demands that few sectors experience. Work is often carried out in extreme conditions:
- Working at height: on overhead lines, signalling or pylons, with arms raised and the body balanced for long periods.
- Confined spaces: tunnels, manholes and technical ducts where access is limited and mobility restricted.
- Railway tracks: crouching, kneeling or bending to work on rails, sleepers or fastening systems.
- Carrying heavy loads: tools, spare parts and measuring equipment, with movements repeated hundreds of times a day.
This combination of prolonged static postures, repetitive movements and loads to be handled creates fertile ground for injuries and premature joint wear.
A direct impact on workers' health
The consequences of these demands are well documented in the sector. Musculoskeletal disorders (MSDs) are the leading cause of occupational illness among transport maintenance workers:
- Chronic lower back pain linked to bending and carrying loads.
- Tendinitis and knee osteoarthritis caused by repeated crouching.
- Chronic fatigue that reduces alertness and increases the risk of accidents.
- Frequent sick leave, with the arduous nature of the work often recognised by employers.
Beyond individual suffering, these issues place a heavy burden on organisations: absenteeism, recruitment difficulties, loss of skills and direct costs linked to compensation and replacements.
The leg exoskeleton: a targeted physical assistance solution
In light of these findings, the leg exoskeleton stands out as a particularly relevant technological innovation. Contrary to popular belief, it is not a futuristic gadget, but a proven piece of professional equipment designed specifically to relieve the joints most heavily used during maintenance work.
How it works and its benefits for maintenance
A leg exoskeleton is a device worn on the lower limbs that assists the movement of the hips and knees. Depending on the model, the assistance can be:
- Passive: springs or mechanical mechanisms store and release energy during movement.
- Motorised: electric actuators actively support the movement, particularly when standing up from a crouch.
The benefits are immediate and measurable. The reduction in muscular effort can reach 40% depending on the model, as with the leg exoskeleton offered by Exyvex. In practice, the worker feels less tension in the thighs, knees and lower back. They can hold a crouching posture for longer, stand up without excessive effort and carry out consecutive tasks with increased endurance. Precision of movement also improves, as muscle fatigue is reduced.
A solution suited to the sector's demands
Modern exoskeletons are specifically designed to meet the requirements of transport maintenance:
- Lightweight and long battery life: the most high-performing models, such as those from Exyvex, weigh less than 3 kg and offer enough battery life for a full working day.
- Environmental resistance: robust design capable of operating in dusty, damp environments or those subject to significant temperature variations.
- PPE compatibility: can be worn with standard personal protective equipment (harness, safety boots, gloves).
This adaptability is essential: an exoskeleton that got in the way of wearing a harness or that couldn't handle the damp of tunnels would be immediately rejected by field teams.
Concrete use cases in transport maintenance
Railway tracks and tunnels
On railway tracks, tamping, welding and fastener replacement operations place intense strain on the knees and back. The exoskeleton allows workers to maintain a stable crouching position while retaining the precision needed for the work. During tunnel inspections, accessing cramped areas becomes less arduous, and drain cleaning — often carried out in uncomfortable positions — places less strain on the joints.
Overhead lines and signalling
Working at height on overhead lines requires considerable postural stability. The exoskeleton reduces the load on the legs and improves balance, which lowers the risk of falls. For signalling light maintenance, workers frequently have to bend and reach equipment at varying heights: the assistance reduces the effort required and preserves endurance throughout the task. On pylons, repeated vertical movements become less exhausting.
Feedback from companies
Field data confirms the value of the technology. Major operators such as Iarnród Éireann and Transport Infrastructure Ireland have tested exoskeletons with their maintenance teams, with promising results in reducing MSDs. Exyvex has equipped railway maintenance teams and observed a 30% drop in MSD reports. Urban transport companies, meanwhile, have seen a 15% increase in productivity after deployment.
| Indicator | Before exoskeleton | After deployment |
|---|---|---|
| MSD reports | Baseline | -30% |
| Productivity (tasks/day) | Baseline | +15% |
| Muscular effort at the knees | Baseline | -40% |
Health and performance benefits for teams
Reduction of MSDs and fatigue
The main contribution of the exoskeleton lies in reducing joint and muscle strain. The knees, particularly exposed during repeated crouching, are directly supported. The back also benefits from this assistance, as standing up from a low position places significant strain on the lower back. The result: less pain felt at the end of the day, better wellbeing at work and a significant drop in sick leave.
Measurable operational gains
- Increased productivity: more tasks completed per day, without increasing the physical toll.
- Improved quality: more precise movements, fewer errors caused by fatigue.
- Cost reduction: fewer workplace accidents, fewer occupational illnesses, fewer emergency replacements.
For managers, these gains translate into a more stable, more experienced team that is less exposed to the ups and downs of absenteeism.
How to choose an exoskeleton suited to transport maintenance
Essential technical criteria
Not all exoskeletons are equal, and the choice should be guided by the real demands of the field:
- Lightweight: less than 3 kg so as not to add extra fatigue.
- Battery life: at least 8 hours to cover a full working day.
- Durability: ingress protection (IP) rating suited to water and dust, impact resistance.
- Comfort: customised adjustments, breathable materials, even distribution of support.
- Compliance: CE marking and adherence to the ISO 13482 standard for exoskeletons.
Support and training
Adopting an exoskeleton is not just about buying the equipment. It requires structured support:
- Choose a supplier that offers training in use and ongoing follow-up.
- Involve teams from the testing phase to encourage acceptance and gather field feedback.
- Benefit from personalised support: this is what Exyvex offers, with training sessions and follow-up tailored to each working environment.
Outlook and future developments
Integration with digital tools
New-generation exoskeletons are part of a move towards connectivity. We can envisage models capable of monitoring operator fatigue in real time, analysing postures and raising alerts when there is a risk. This aggregated data would make it possible to continuously improve working conditions and prevent injuries before they occur. Coupling with augmented reality also opens up interesting possibilities for guiding complex tasks.
Growing acceptance and wider use
The exoskeleton is changing status: from an experimental object, it is becoming a work tool like any other. Attitudes are shifting, driven by concrete results and by the adaptation of devices to the specific features of each trade — whether railway maintenance, professional hiking or rehabilitation. The next generations will be lighter, more autonomous and less costly, which will accelerate their uptake.
Frequently asked questions
What are the benefits of an exoskeleton for transport network maintenance?
Reduced fatigue, fewer MSDs, increased productivity, improved quality of work and lower costs linked to workplace accidents. The exoskeleton allows workers to work for longer, with less pain and better precision.
How does a leg exoskeleton reduce musculoskeletal disorders (MSDs)?
By supporting the joints during strenuous postures — crouching, kneeling, standing up — it reduces pressure on the knees and back. This assistance reduces joint wear and associated pain, while preserving the operator's natural mobility.
What is the return on investment (ROI) of an exoskeleton for transport companies?
ROI is generally achieved within 12 to 24 months thanks to reduced sick leave, increased productivity and lower health costs. Exyvex offers personalised studies to accurately assess the return on investment according to each company's context.
Are there exoskeletons suited to working at height or in confined spaces?
Yes. Some models, such as those from Exyvex, are designed to be lightweight and compact, compatible with safety harnesses and suited to cramped environments. Their design allows them to be worn without restricting movement in tunnels, manholes or on pylons.
What are the regulatory requirements for using an exoskeleton at work?
The exoskeleton must comply with CE standards, and its use must form part of a workplace risk assessment process. Training in its use is mandatory. Exyvex supports its clients with this compliance, from analysing workstations to implementing safety protocols.
