---
title: "Class 156 Life Extension - RETB (Radio Electronic Token Block) Data Loggers"
ocid: "ocds-r6ebe6-0000815126"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-r6ebe6-0000815126"
markdown_url: "https://d3tenders.com/contract/ocds-r6ebe6-0000815126.md"
json_url: "https://d3tenders.com/contract/ocds-r6ebe6-0000815126.json"
source: "Public Contracts Scotland"
current_stage: "Award"
buyer: "SCOTRAIL TRAINS LIMITED"
published: "2026-01-14"
---

# Class 156 Life Extension - RETB (Radio Electronic Token Block) Data Loggers

Buyer: SCOTRAIL TRAINS LIMITED  
Current stage: Award  
OCID: ocds-r6ebe6-0000815126

[View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-r6ebe6-0000815126)  
[Download OCDS JSON](https://d3tenders.com/contract/ocds-r6ebe6-0000815126.json)

## Summary

See notice for full details.

## Notice

The Supply, design integration and ongoing support of RETB (Radio Electronic Token Block) Data Loggers for the Class 156 fleet of Diesel Multiple Units (DMUs).

### Lot Information

Lot 1

The provision of data loggers for the RETB fitted fleet of 5 x Class 153, 15 x Class 156 and 25 x 158 Diesel Multiple Units (DMUs). The data loggers shall capture all relevant parameters to assess the signal strength and signal to noise ratio on the RETB network. The proposed contract will provide continuity of operation of the system based upon the existing solution in which there has been significant prior investment.

### Procurement Information

On the basis of The Utilities Contracts (Scotland) Regulations 2016 in accordance with regulation 48.(1)(c)(ii) a utility may award a contract following a negotiated procedure without prior publication of a call for competition where the works, supplies or services can be supplied only by a particular economic operator due to competition being absent for technical reasons. Single Source is required due to integration with existing systems on the fleet.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Public Contracts Scotland |
| Latest notice | https://www.publiccontractsscotland.gov.uk/search/show/search_view.aspx?ID=JAN547168 |
| Notice type | OJEU - F6 - Contract Award Notice (Utilities) |
| Procurement type | Standard |
| Procurement category | Goods |
| Procurement method | Limited |
| Procurement method details | Award procedure without prior publication of a call for competition |
| Tender suitability | Not specified |
| Awardee scale | Not specified |
| All stages | Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 14 Jan 2026 |
| Submission deadline | Not specified |
| Future notice date | Not specified |
| Award date | 18 Nov 2025 |
| Contract period | Not specified |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | Not specified |
| Lots value | Not specified |
| Awards value | Not specified |
| Contracts value | Not specified |

## Status

| Field | Value |
| --- | --- |
| Tender status | Complete |
| Lots status | Complete |
| Awards status | Not specified |
| Contracts status | Active |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | SCOTRAIL TRAINS LIMITED |
| Locality | GLASGOW |
| Post town | Glasgow |
| Postcode | G2 6HQ |
| Country | Scotland |
| ITL 1 | TLM Scotland |
| ITL 2 | TLM3 West Central Scotland |
| ITL 3 | TLM32 Glasgow City |
| Local authority | Glasgow City |
| Electoral ward | Anderston/City/Yorkhill |
| Westminster constituency | Glasgow North |
| Delivery location | TLM Scotland |

## CPV Codes

### Divisions

- 34 - Transport equipment and auxiliary products to transportation

### Codes

- 34632200 - Electrical signalling equipment for railways

## Release History

- 14 Jan 2026 at 00:00 - Award - OJEU - F6 - Contract Award Notice (Utilities) - https://www.publiccontractsscotland.gov.uk/search/show/search_view.aspx?ID=JAN547168
- 18 Nov 2025 at 00:00 - Award - OJEU - F15 - Voluntary Ex Ante Transparency Notice - https://www.publiccontractsscotland.gov.uk/search/show/search_view.aspx?ID=NOV543824

## Documents

- https://www.publiccontractsscotland.gov.uk/search/show/search_view.aspx?ID=NOV543824
  Class 156 Life Extension - RETB (Radio Electronic Token Block) Data Loggers - This is a voluntary ex ante transparency (VEAT) notice. The Supply, design integration and ongoing support of RETB (Radio Electronic Token Block) Data Loggers for the Class 156 fleet of Diesel Multiple Units (DMUs).
- https://www.publiccontractsscotland.gov.uk/search/show/search_view.aspx?ID=JAN547168
  Class 156 Life Extension - RETB (Radio Electronic Token Block) Data Loggers - The Supply, design integration and ongoing support of RETB (Radio Electronic Token Block) Data Loggers for the Class 156 fleet of Diesel Multiple Units (DMUs).

## Notice URLs

- http://
- https://api.publiccontractsscotland.gov.uk/v1/Notice?id=ocds-r6ebe6-0000815126
- https://www.publiccontractsscotland.gov.uk/search/Search_AuthProfile.aspx?ID=AA30589

## Provenance

This Markdown file is an alternate public rendering of the D3 Tenders contract record. The canonical page is https://d3tenders.com/contract/?ocid=ocds-r6ebe6-0000815126. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-r6ebe6-0000815126.json.