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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 (DPPS). 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.

+44 (0)114 230 0822
Zonegreen, Sir John Brown Building, Davy Industrial Park, Prince of Wales Road, Sheffield, S9 4EX
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Case Studies

Hornsea Interlocking Case Study Hornsea Interlocking Case Study
Hornsey depot has recently installed a new high-level full-length gantry, servicing Roads 18 a...
Kings Heath Case Study Kings Heath Case Study
Kings Heath Traincare Facility in Northampton is the first depot to receive midlife overhaul o...
Pakenham DPPS Pakenham DPPS
Working with Australian partners, Andrew Engineering, Zonegreen’s DPPS has been successf...
Norwich Road 16 & 17 Norwich Road 16 & 17
As part of a £40 million refurbishment at the Norwich Crown Point depot, Zonegreen&rsquo...
Old Oak Common Old Oak Common
Workers at the new Cross Rail Old Oak Common Depot, London, are now being protected by Zonegre...
Doha Metro Doha Metro
Doha Metros first depot – Al Wakra depot - is in full production reassembling and testin...
Eurostar – Temple Mills – London Eurostar – Temple Mills – London
Zonegreen designed and manufactured the Depot Personnel Protection S...
ABP Hull Point Converter ABP Hull Point Converter
The first installation of the new Zonegreen Point Converter has been completed at Ass...