Outputs for up to 8 sections and up to 12 directly connected sensor pairs, a small number of devices covers all relevant sections of small, medium and large stations.
Meet us at
InnoTrans
Hall 27 · Stand
840
Serbia's largest ICT research institute and system integrator for railway signalling, interlockings, trackside equipment, traffic control centres, engineered and manufactured in-house.
- Dates
- 22–25 September 2026
- Venue
- Messe Berlin
- Hall
- 27
- Stand
- 840
75+years of experience
500+employees
300+engineers & researchers
SIL4Safety critical solutions
LL-000-m LED Railway Signal
Modern LED Technology. Seamless Retrofit. Proven Reliability.
The LL-000-m LED light source brings modern LED technology to existing railway signalling systems, without the need for costly system modifications.
Designed as a direct replacement for conventional dual-filament light bulbs in relay-based interlocking systems such as SpDrS-64 and Domino 55, LL-000-m maintains full compatibility with the existing light bulb interface, including day, night and flashing operation, as well as continuous auxiliary filament monitoring for the red aspect.
For SpDrS-64 systems, modernization is exceptionally straightforward: no modifications to the interlocking system are required. The existing light source can simply be replaced with the LL-000-m LED module or complete LED signal unit.
Why LL-000-m?
- Direct retrofit for existing relay-based signalling systems
- No interlocking modifications required for SpDrS-64
- Significantly longer service life than conventional incandescent lamps
- Higher availability and reduced maintenance costs
- Compatible with day, night and flashing operation
- Continuous monitoring of individual high-current LEDs
- Modular and flexible architecture for different interlocking systems
- Adaptable to electronic interlocking requirements
- No conventional light bulbs or bulky glass lenses required
- No colour filters thanks to dedicated colour LEDs
- Eliminates the possibility of colour phantom signals
Proven in real railway operations
LL-000-m is not just a modernization concept, it is field-proven technology. Approximately 3,000 LED railway signals developed by the Mihajlo Pupin Institute have already been installed and commissioned across railway corridor sections, demonstrating the reliability, scalability and operational benefits of the technology.
Upgrade the signal. Keep the infrastructure. Move railway signalling forward.
~3,000LED railway signals in service
on corridor sections
on corridor sections
Train Axle Counter - BROS
The BROS axle counter is designed for reliable train detection and monitoring of railway section occupancy. The device is housed in a standard 19-inch, 3U rack and installed in the relay room of a railway station, automatic block system or level crossing.
BROS uses sensor pairs installed at the boundaries of each monitored section, counting the axles entering and leaving to determine whether the section is clear or occupied. Each sensor pair consists of two wheel detectors mounted next to each other on the rail, and also reports direction and speed of rail vehicles.
For Automatic Block Signalling, communication between adjacent BROS counters needs only two wires; optical fibre between two devices is available as an alternative.
Two integrated modems allow communication with up to two neighbouring axle counters, making BROS particularly suitable for ABS applications.
Configuration data is stored in non-volatile memory, allowing flexible assignment and combination of sensor pairs and relay outputs for any section topology.
Universal Train-wheel Detector - UTD
Reliable wheel detection up to 350 km/h, built for easy installation and maintenance.
UTD can operate in parallel with existing rail devices, enabling gradual infrastructure modernization through regular maintenance and upgrades. It runs alongside magnetic or other wheel detectors at the same detection point, so existing infrastructure can be upgraded without immediately replacing the current detection system.
Installed first as a rail crossing detector, UTD can later be integrated into an axle counting system, a cost-effective path toward section control modernization with fewer additional infrastructure changes.
IND-00 / IND-01 / IND-02
LED Railway Indicators
Clear information. Flexible integration. Smarter signalling.
The IND series of LED railway indicators provides clear and reliable alphanumeric characters and symbolic indications as a complement to main railway signals.
Developed for a wide range of rail applications, IND indicators can be used across mainline railway, metro and tram networks, a versatile solution for both existing and modern signalling infrastructure. A modular, flexible architecture supports a wide range of operating conditions and adapts to different relay-based interlocking systems.
Alphanumeric and symbolic
Clear display of characters and symbols, designed to complement main railway signals, with dedicated LEDs for reliable, efficient and long-lasting operation.
Railway, metro and tram
One modular platform adapts to a wide range of operating requirements across mainline, urban and light-rail networks.
Fits existing interlockings
Compatible with different relay interlocking systems, simplifying integration into existing infrastructure and cutting adaptation and modernization costs.
The modular design of IND-01 and IND-02 enables efficient adaptation to different interlocking configurations, reducing engineering effort and implementation costs.
One platform. Multiple indications. Built for flexible railway signalling.
Signalling
From the operator's workstation to the points in the field, four systems we develop and manufacture ourselves.
MMI10
Railway safety HMI
Safe control. Clear visualization. Smarter operations.A safety HMI for monitoring, control and management of railway signalling systems. The intuitive graphical interface gives operators a clear, safe and standards-compliant view of operations, highly customizable and available in multiple languages.
M2SCD
Signal control device
Flexible control. Safe routes. Compact design.A compact interlocking for up to four routes: four main and four announcing signals as standard, with smaller or expanded configurations available. Power supply, axle detection and interlocking in one 19-inch rack, with a movable control panel for route setting and live status.
GS20
Point heating system
Reliable points. Smarter heating. All-weather operations.Modular point heating in centralized, decentralized or ambient source configurations, with SCADA integration. Intelligent heater control, real-time HMI monitoring, fault detection and per-heater testing; sequential activation cuts peak electrical demand.
CTC-ST
Centralized traffic control
One control centre. Complete network visibility.Monitors, manages and optimizes railway operations across whole networks from a single location. Developed with in-house software and hardware, on redundant high-performance equipment, adapting to different topologies and a virtually unlimited number of stations.
One network. One intelligent control platform. Unlimited possibilities.
Enhanced safety, increased track capacity, higher operational efficiency and optimized traffic management, from the interlocking up to the control centre.
Telecommunications
Railway telecommunications for voice, dispatch and trackside telephony, with modern IP platforms that keep existing infrastructure in service.
VC-MDX
Registrophone
Record. Monitor. Retrieve. Stay in control.Professional digital voice recording and archiving for telephone and radio communications, up to 256 channels, with live monitoring, playback, search and export, local or remote over LAN. An independent alarm unit watches system health and alerts the dispatcher visually and audibly.
SPDC
Railway VoIP platform
Connecting railways. Seamless modernization.A VoIP platform connecting station masters, dispatchers and trackside personnel on one LAN-based infrastructure, with unlimited phones and dispatcher consoles. Copper or optical fibre, and compatible with Siemens B14, LB and CB legacy systems for gradual modernization.
D-RDC
Digital radio dispatching
Upgrade to digital. Keep your infrastructure.Voice and command communication between dispatch centres and rail vehicles, fully compatible with existing analog infrastructure, with no changes to modulation lines, fixed base stations or onboard radios. One panel handles calls, commands, vehicle notifications, history and base-station testing.
UPT
Universal railway telephone
One platform. Multiple applications.A direct replacement for existing trackside telephones for signals, sections, platforms and shunting areas, installed without structural modifications and fitting existing cabinets. Copper or optical fibre, AC or DC supply, also in TIS, TUS, TARP, PT and CB configurations.
Connect the network. Empower dispatchers. Modernize railway communication.
Every communication recorded, every moment accessible, a scalable, cost-effective path from traditional railway telephony to IP-based operations.
Let's talk at
Hall 27,
Stand 840
One-hour meetings are available in English or Serbian with a rail programme engineer. Tell us what you would like to see or discuss, and we will confirm your slot by email as soon as possible.
- Live demo of the interlocking HMI
- Reference projects on Serbian corridors
- Partnering and Horizon consortium talks