375x249-logo Zonegreen

Head office

Sir John Brown Building
Davy Industrial Park
Prince of Wales Road
Sheffield  S9 4EX
United Kingdom

Tel: +44 114 230 0822

Fax: +44 871 872 0349




Zonegreen is renowned as the original creator of the modern rail depot protection system and is the world market leader in the field with its SMART Depot Personnel Protection Systems (DPPSTM). The system, installed throughout the UK and across the world, allows the safe and efficient control of train movements within depots – crucial in today’s busy working environments – protecting both staff and infrastructure.

The DPPS is highly advanced, state-of-the-art and incorporates intelligent, distributed communication technology, as well as electronic personnel datakeys to uniquely identify staff working in different safety zones.

Zonegreen specialise in safety control systems and interlocking solutions.



  • Rolling stock
  • Overhaul/workshops
    • Tools/Equipment/Diagnostics
    • Complete workshops
  • Traction & Control
  • Control
    • Diagnostics/fault loggers
  • Infrastructure
  • Signalling & Train Control
    • Complete train control
    • Interlockings
  • Track Maintenance
    • Lighting/warning systems
  • Buildings & Structures
    • Safety systems
  • Data & Information Systems
  • Data Systems
    • Automated shunting
    • Tools & software
  • Consultants
  • Management Support
    • Consultants
  • Support Services
  • Operations Support
    • Risk/safety assessment

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Supporting documents

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