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Type-Approved Hinged Friction Wheel Stop

Overview

Oleo Rail and Industrial successfully achieved Type-Approval for its Hinged Friction Wheel Stop with Yarra Trams following a two-year period of collaboration, testing, and technical validation. The approval represents a key milestone in expanding Oleo’s footprint in the Australia and New Zealand rail sector.

The product is approved for end-of-line applications, including deployment at Brunswick Depot and other tram network locations, enhancing safety in controlled, low-speed environments.

Challenge

Yarra Trams required a reliable and space-efficient solution to safely arrest rolling stock at the end of tram lines on the world’s largest tram network. The system needed to:

  • Operate effectively within constrained depot environments
  • Meet strict safety and operational requirements
  • Be compatible with existing infrastructure and rolling stock
  • Demonstrate proven performance through validated testing

The approval process required alignment with stakeholder expectations, including drivers, depot operations teams, and transport authorities.

Solution

Oleo proposed its Hinged Friction Wheel Stop – a mechanical safety device specifically designed for low-speed end-of-line applications

Key Features:

  • Arrests rolling stock at impact speeds up to 5km/h
  • Standard, proven design requiring no modifications
  • Validated on UK ISO 17025 accredited test rigs
  • Designed with human factors in mind, including manual reset after impact
  • Compatible with tram wheel profiles and infrastructure constraints

The solution was supported by comprehensive technical documentation, safety analysis, and risk assessments.

Technical Validation & Compliance

A rigorous evaluation process was undertaken to ensure compliance with operational and safety requirements:

  • Safety Analysis: Confirmed no risk of vehicle override
  • Impact Performance: Designed for low-speed impacts (≤5 km/h operational limit)
  • Testing: Verified using UK ISO 17025 standards
  • Human Factors: Manual reset and operational usability assessed
  • Reference Installations: Proven performance on networks including Sydney Trains and KiwiRail

Although no specific Yarra Trams standard applied, the system met all necessary engineering and safety expectations.

Implementation Conditions

Approval was granted subject to specific conditions to ensure safe and effective deployment:

  • Installation following updates to track standards
  • Maximum operational impact speed of 5 km/h
  • Adequate space for controlled sliding during impact
  • Adherence to installation and maintenance manuals
  • Scheduled inspections every six months following impact events

The Chief Engineer formally approved the solution in line with these requirements.

Outcome

  • Successful Type-Approval achieved after two years
  • Approved for deployment at Brunswick Depot and other locations
  • Strengthened Oleo’s presence in the AU/NZ rail market
  • Established foundation for future approvals (Friction Buffer Stop and Fixed Buffer Stop)

Key Benefits

  • Enhanced safety for end-of-line tram operations
  • Reliable performance in low-speed impact scenarios
  • Efficient use of limited space in depot environments
  • Proven, standardised solution requiring minimal adaptation

Conclusion

This project demonstrates Oleo’s ability to deliver innovative, safe, and compliant rail solutions in complex operational environments. The successful Type-Approval with Yarra Trams highlights the company’s commitment to engineering excellence and collaboration, paving the way for continued growth across Australia and New Zealand.