2.The unique combination of surface and linear detection guarantees the detection of even difficult objects (e.g., black vehicles)

• Environmental resistance:
  The devices are designed to operate in demanding weather conditions, such as rain, snow, and fog, while maintaining high operational stability both day and night. Resistance to vibration and extreme temperatures is also crucial.
• Integration with railway systems:
  The detectors can be integrated with existing railway traffic control systems, including automatic level crossing signaling systems. They offer standard output interfaces and digital communication capabilities (e.g., Ethernet), enabling diagnostics, monitoring, and remote management.
• System response:
  When an obstacle is detected, the system can automatically initiate specific procedures, from activating warning signals to supporting the dispatcher’s decisions to emergency actions, such as stopping rail traffic.
• Safety architecture: Solutions are designed in accordance with the fail-safe principle and often utilize redundant components. This enables achieving high levels of functional safety (e.g., compliance with SIL3 requirements), which is crucial in critical infrastructure systems.

The whole system operates in a coherent operating model:
Detection → Communication → Response, ensuring a fast and reliable decision-making chain.

Configuration in Poland – for category A and B crossings

In Polish infrastructure conditions, category A and B crossings are particularly important for the implementation of detection systems.

• Category A crossings
  These are crossings operated by personnel (watchmen), where the detection system can act as operational support, providing additional information about potential threats via a dedicated control panel and increasing the level of safety of decision-making.
• Category B crossings
  These are those equipped with automatic traffic lights and barriers, but without direct operator control. In this case, detection systems have particularly great potential, acting as a “digital eye” that continuously monitors the situation on the tracks and reacts independently of human intervention, informing the driver of an approaching train about the crossing’s occupancy status.

Importantly, integrating the detectors with the existing infrastructure does not require its complete reconstruction, which makes the implementation of the solution relatively cost-effective.

Experiences and pilot projects in Poland

Solutions based on laser technology are currently in the phase of intensive testing and pilot implementation in real conditions in Poland.

As part of the work carried out:

• field tests are being carried out;
• systems are integrated with existing railway infrastructure;
• The effectiveness of the operation in various traffic scenarios is analyzed.

Preliminary results of laboratory and simulation tests indicate very high detection efficiency, exceeding 99%, which confirms the potential of this technology as a real support for railway traffic safety.

The advantage of laser technology

Compared to other detection methods, especially systems based on image analysis, laser solutions have a number of significant advantages:

• full independence from lighting conditions;
• high precision in measuring the distance and position of objects;
• limited susceptibility to interpretation errors;
• operational stability in changing weather conditions.

Additionally, the use of advanced data analysis algorithms allows for a significant reduction in the number of so-called false detections, which is crucial for the reliability of security systems.

Development directions

The development of obstacle detection technology is part of a broader trend of digitalization and transportation automation. These systems are increasingly being integrated with:

• artificial intelligence algorithms;
• user behavior analysis systems;
• real-time traffic management platforms.

In the coming years, this will lead to the creation of so-called intelligent railway crossings – capable of not only responding to threats, but also predicting and preventing them.

Summary

Laser obstacle detection is one of the most promising solutions for improving safety at level crossings. Combining precise detection, high environmental resistance, and the ability to integrate with existing traffic control systems, this technology truly addresses contemporary infrastructure challenges.

Its implementation will not only reduce the number of accidents, but also increase the efficiency of traffic management and improve the safety of all participants, both road users and the railway system.

In the face of growing traffic volumes and the increasing automation of transport, obstacle detection systems are no longer an innovation, they are becoming an essential element of modern, responsible infrastructure.

Authors:

Marcin Ruciński

Karol Wierzchowski