Market · Technology · Supply Chain
Electrical Asset
Monitoring for
Motorways & Highways
A modern motorway is a linear electrical system stretched over hundreds of kilometres — lighting, tunnel ventilation and fire systems, gantries and signs, traffic sensors, tolling and, increasingly, EV charging, all fed from roadside substations and feeder pillars. When power or a safety system fails, lanes close and, in a tunnel, lives are at risk. This briefing maps the market, the sensing and analytics stack, the leading vendors, an end-to-end reference architecture, and the supply chain behind roadside electrical asset monitoring.
The Market
Highway electrical monitoring is driven by uptime, road-user safety and — in tunnels — life-safety obligations, plus the electrification of the road itself (LED lighting, EV charging, connected systems). It rides on the intelligent-transport-systems, smart-infrastructure and asset-management markets rather than a standalone budget.
Sizing the opportunity
Framed through its parent markets:
- Intelligent transport systems (ITS) & smart roads — the broad envelope; a multi-tens-of-billions market growing roughly 8–11% CAGR as roads are instrumented, connected and electrified.
- Road / tunnel electrical & lighting infrastructure — a large capital and O&M market shifting to connected LED lighting and monitored tunnel systems.
- Highway asset management software — platforms tracking condition and maintenance across dispersed electrical and civil assets on the network.
- EV charging infrastructure — a fast-growing adjacency along corridors, adding high-power electrical assets that must be monitored for uptime and grid impact.
The practical read: spend follows availability, safety (especially tunnels) and the electrification of the road — favouring remote monitoring that keeps dispersed roadside power and life-safety systems running and maintenance targeted.
What is pulling the market forward — and what is holding it back
Demand Drivers
- Road-user safety & availability
- Failed lighting, signs or signals — and above all tunnel systems — create hazard and lane closures; monitoring protects safety and keeps traffic moving.
- Tunnel life-safety obligations
- Regulations mandate reliable tunnel ventilation, lighting and fire systems (in the EU, minimum tunnel-safety requirements), making continuous monitoring effectively compulsory.
- Electrification of the road
- LED lighting, connected ITS, and corridor EV charging add electrical assets and loads that must be monitored for uptime, energy and grid impact.
- Energy cost & carbon
- Lighting and tunnel ventilation are large, controllable energy loads; monitoring and adaptive control cut cost and emissions.
- Aging roadside assets
- Decades-old feeder pillars, cabling, lighting and cabinets across vast networks need condition awareness to manage safely and defer capital.
- Maintenance efficiency
- Assets are dispersed over hundreds of kilometres; remote monitoring targets scarce crews and reduces disruptive, hazardous roadside visits.
Regional dynamics
Dense motorway and tunnel networks under strict tunnel-safety directives, strong smart-motorway and ITS programs, and mature road authorities driving connected, monitored infrastructure.
Extensive interstate and highway networks with growing ITS deployment, connected-corridor and managed-lane programs, and expanding EV-charging corridors.
Rapid expressway and tunnel construction (notably China and India) with new, digitally specified smart-road and monitoring systems from the outset.
New smart-highway and tunnel projects across the Gulf and elsewhere, frequently specified with integrated monitoring and control from day one.
Assets & Key Technologies
Highway electrical monitoring spans dispersed roadside power (substations, feeder pillars, cabinets), life-safety tunnel systems, and the ITS/lighting/charging loads they feed — with tunnel and lighting systems the highest-value, safety-critical targets, unified by SCADA and asset-management software.
The assets under watch
Monitoring modalities
Highway monitoring emphasizes availability and life-safety of dispersed and tunnel assets — power and energy monitoring at cabinets and substations, drive and motor health for tunnel fans, and connected-luminaire and systems telemetry — much of it inferred from controllers rather than dedicated sensors on every unit.
- Power & energy monitoring — voltage, current, energy and power quality at substations, feeder pillars and cabinets, doubling as an energy-efficiency and fault tool.
- Earth-fault / insulation & RCD monitoring — detecting cabling and connection faults across roadside distribution before they cause outages or hazard.
- Connected lighting (CMS) telemetry — luminaire-level status, fault and burn-hour data plus adaptive dimming from lighting central-management systems.
- Tunnel fan / drive & motor monitoring — motor current, vibration and drive health on life-safety ventilation, with availability and readiness checks.
- Tunnel systems monitoring — continuous supervision of tunnel lighting, emergency power, fire detection and SCADA-integrated life-safety functions.
- Thermal monitoring — IR and thermal sensing on cabinet connections, feeder pillars and switchgear to catch hotspots.
- Standby power & UPS monitoring — generators, UPS and battery health backing tunnels, tolling and critical ITS.
- ITS device health monitoring — availability and fault status of signs, sensors, cameras and controllers along the network.
- EV-charger monitoring — charger uptime, faults, power and grid-connection status at corridor charging sites.
- Cabinet environmental & intrusion monitoring — temperature, humidity, door/intrusion and flood status in roadside enclosures.
- Predictive analytics / asset management — condition scoring, fault prediction and maintenance planning across dispersed electrical assets, increasingly with a network digital twin.
The enabling stack
- Roadside sensors & meters — power meters, fault/insulation monitors and environmental sensors in cabinets and pillars.
- Outstations / RTUs & controllers — roadside outstations and ITS/lighting controllers gathering and acting on data.
- SCADA / tunnel & traffic management systems — the control backbone supervising tunnels, lighting and traffic operations.
- Lighting central-management systems (CMS) — network-wide luminaire monitoring and adaptive control.
- Communications backbone — fibre along the carriageway plus cellular for remote cabinets and devices.
- Asset-management & APM software — dispersed-asset condition, fault and maintenance management, with digital twins of the network.
- AI/ML analytics — for fault prediction, energy optimization and tunnel/lighting anomaly detection.
- EAM/CMMS & works integration — turning condition into targeted, traffic-managed maintenance.
Protocols & standards that tie it together
Leading Solutions
The field spans the road-technology and ITS integrators (who deliver tunnel/traffic systems), the electrical-infrastructure and connected-lighting vendors, the roadside-power and monitoring specialists, and the EV-charging and asset-management players. Selected leaders and their relevant offerings:
| Company | Relevant platform / products |
|---|---|
| Siemens Mobility | Tunnel and traffic management systems, roadside controllers and ITS, with monitoring and analytics across highway electrical and control assets. |
| SWARCO | Traffic and ITS systems, roadside equipment and connected road technology across highways and tunnels. |
| Kapsch TrafficCom | Tolling and traffic-management systems, with roadside and back-office monitoring for revenue-critical assets. |
| Yunex Traffic | Traffic controllers, ITS and connected-mobility systems (formerly Siemens ITS) with device and network monitoring. |
| Schneider Electric | EcoStruxure for roads and tunnels, MV/LV distribution, power monitoring and SCADA for roadside and tunnel electrical systems. |
| ABB | Tunnel and infrastructure electrification, drives and switchgear with ABB Ability monitoring for ventilation and power assets. |
| Signify | Connected road and tunnel lighting with the Interact central-management system for luminaire monitoring and adaptive control. |
| Telensa · Itron (streetlight) | Streetlight/roadway lighting control and monitoring networks with luminaire-level telemetry. |
| Eaton · Legrand | Roadside power distribution, feeder-pillar and cabinet electrical equipment with metering and protection. |
| Trafficware / Cubic (Trafficware, GRIDSMART) | Traffic-signal control, detection and ITS with device monitoring. |
| Q-Free | ITS, tolling and traffic-management systems with roadside monitoring. |
| ADB SAFEGATE-type & tunnel specialists | Tunnel systems integrators delivering ventilation, lighting and life-safety control and monitoring. |
| ChargePoint · ABB E-mobility · Alpitronic | High-power EV chargers for corridors with remote uptime and fault monitoring. |
| AVEVA · GE Vernova | SCADA/historian and asset-performance software applied to tunnel and road electrical systems. |
| Qualitrol · Doble | Transformer and switchgear monitoring for larger roadside substations. |
| Dragos · Claroty · Nozomi | OT cybersecurity for connected roadside and tunnel control systems. |
Reference Use Case
Monitoring of tunnel ventilation, lighting and roadside power on a motorway section with a tunnel — a representative deployment that exercises drive/motor health on life-safety fans, connected-lighting telemetry and feeder-pillar power monitoring under SCADA, traced to the traffic control centre alongside the architecture diagram below.
A failing tunnel fan caught before it forced a closure
A motorway section runs through a tunnel fed from roadside substations and feeder pillars, powering tunnel ventilation fans, tunnel and road lighting, fire and emergency systems, and roadside ITS, signs and tolling, with EV charging at an adjacent services. The risks are acute: tunnel ventilation, lighting and fire power are life-safety systems, and any electrical failure can force a tunnel or lane closure with major disruption and hazard.
Everything is supervised. Power monitoring trends loading and power quality at the pillars; drive and motor monitoring on a ventilation jet fan detects a rising current and vibration anomaly consistent with a failing motor bearing ; the lighting CMS flags a cluster of luminaire faults; and cabinet sensors watch temperature and intrusion. No single signal is critical, but fused into an asset-health view, the fan trend gives weeks of warning — while the tunnel’s redundancy keeps it safe.
The system raises a prioritized alert, and maintenance schedules the fan repair and luminaire replacements into a planned overnight closure with traffic management arranged — converting a potential emergency tunnel closure into planned work. Energy analytics trim lighting and ventilation consumption through adaptive control. A hazardous, disruptive failure is averted, with the whole section supervised from the traffic control centre.
From signal to outcome
Analytics applied: power-quality and energy analysis at substations and pillars; earth-fault/insulation detection; connected-luminaire fault and burn-hour analytics; tunnel-fan motor-current and vibration analysis; thermal-hotspot detection; and ML fusing these into asset-condition scores and fault predictions. Actions generated: a prioritized alert, a fan repair and luminaire replacement scheduled into a planned overnight closure with traffic management, and energy/carbon reporting via adaptive control.
Outcome figures are illustrative industry-typical ranges, not guarantees — actual results depend on asset criticality, configuration, loading, and how well alerts feed real decisions.
Company Landscape
A structured map across highway electrical systems — road-technology and ITS integrators, electrical-infrastructure and connected-lighting vendors, roadside-power and monitoring specialists, and EV-charging and software players. Overlaps are common.
| Category | Representative companies |
|---|---|
| ITS Road-technology & ITS integrators | Siemens Mobility · SWARCO · Kapsch TrafficCom · Yunex Traffic · Q-Free · Cubic |
| Elec Electrical infrastructure & tunnel power | Schneider Electric · ABB · Eaton · Legrand · Hitachi Energy |
| Light Connected road / tunnel lighting | Signify (Interact) · Telensa · Itron · Thorn · Lucy Zodion |
| Mon Roadside power & monitoring | Schneider (PowerLogic) · Lucy Electric · Qualitrol · Doble · IRISS |
| Tunnel Tunnel systems integrators | Siemens · ABB · Schneider · specialist M&E integrators |
| EV Corridor EV charging | ChargePoint · ABB E-mobility · Alpitronic · Kempower · Tesla |
| SW SCADA · asset management · APM | AVEVA · GE Vernova · Survalent · Brightly (Siemens) · Yotta |
| Cyber OT security (roads/tunnels) | Dragos · Claroty · Nozomi Networks · Fortinet |
| SI Integrators & engineering / O&M | Jacobs · AECOM · WSP · Mott MacDonald · Colas · Ringway |
| Owner Road authorities & operators | National Highways · state DOTs / FHWA · ASFINAG · toll/concession operators |
Supply Chain
The value chain runs from steel, copper and electronics through electrical, lighting and ITS equipment, the SCADA/asset-management software layer, integrators and O&M contractors, and the road authorities — with dispersed-asset scale, roadside access and public procurement as defining features.
Key supply-chain considerations & risks
Dispersed-asset scale
Thousands of low-value roadside assets over long distances mean monitoring only scales with low per-unit cost — expensive sensing can’t be justified per cabinet or column.
Roadside access & lane closures
Deployment and maintenance are gated by traffic management and closures — costly and disruptive, and the very constraint monitoring exists to reduce.
Component & LED supply
Lighting, controllers and meters depend on LED and semiconductor supply vulnerable to shortages.
Cyber & endpoint sprawl
Connecting thousands of roadside cabinets and controllers on a public network widens the attack surface and raises safety-system security stakes.
Fragmentation & interoperability
Heterogeneous, multi-vintage roadside equipment and mixed protocols complicate standardized monitoring.
Public funding & skills
Road-authority budgets, long procurement, and scarce specialist skills gate investment and deployment.