Skip to main content

3i buys SRL Traffic Systems

London-listed investment company 3i has a 92% controlling stake in SRL, based in England.
By David Arminas December 7, 2021 Read time: 2 mins
SRL’s solutions include variable message signs, work-zone protection barriers, CCTV and portable urban traffic management and control technology

SRL Traffic Systems, a UK and Republic of Ireland manufacturer of portable and temporary intelligent transport system (ITS) solutions has been bought by 3i Infrastructure.

SRL, based in the English town of Middlewich, was founded in 1997 and has 170 employees and 150 specialist vehicles. It went through a management buyout in 2019 and has since  grown its product portfolio. Solutions include variable message signs, work-zone protection barriers, CCTV and portable urban traffic management and control technology. It also has traffic signals featuring what the company says is the market’s only multiphase adaptive detection system.

3i is a London Stock Exchange listed investment company with longstanding experience of investing in asset companies and has acquired a 92% controlling stake in SRL. The SRL management team holds onto an  8% share.

3i said the buyout “will facilitate SRL’s next phase of growth, which will include development of the firm’s research and development and manufacturing capabilities, creation of innovative new products and expansion into new markets”.

SRL’s new chief executive officer is Adrian Murphy who joined the company as chief operating officer in April. He replaces Richard Tredwin, who will take up the role of non-executive chairman, replacing Sat Dhaiwal.

Recently, SRL and SWARCO Traffic, a traffic technology specialist, formalised their partnership, with SRL becoming SWARCO Traffic’s official Strategic Hire Partner. The partnership is an extension of the ongoing relationship between the two businesses, which has seen over 400 SWARCO signs form part of the SRL fleet for use on roads throughout the UK and Ireland.

SRL also recently announced an exclusive partnership with barrier and gate manufacturer Solar Gates UK to hire out the manufacturer’s INSTABOOM work zone barriers. SRL says the solar/hybrid instant protection barriers are a safer and more cost-efficient alternative to the traditional plastic barriers staffed by dedicated gate-people. INSTABOOM can be seen in many work zones throughout the UK, including SMART motorways and the high-speed train HS2 project.

For more information on companies in this article

Related Content

  • Variable message signs deliver real time travel information
    April 10, 2012
    Variable Message Sign systems are helping ease traffic congestion and keeping drivers better informed on key highways across Europe and the rest of the world. Guy Woodford looks at some of their recent applications By coupling its Intelligent Travel Time System (ITTS) with Bluetooth technology, Alcatel-Lucent is measuring traffic flow in real time and conveying it seamlessly to local authorities in the French city of Vélizy-Villacoublay. The city, a major business enterprise hub 14km south-west of central
  • Yunex Traffic management for Hamburg
    April 28, 2022
    More than 150,000 vehicles pass along the A7 in Hamburg, Germany, every day – increasing regularly. To ensure continued safety on the route, highway operator Die Autobahn launched an extensive renovation project on the A7. Traffic technology on the city highway will be optimised, digitised and connected in 18 construction phases.
  • Oklahoma turnpike project for Atkins
    December 20, 2017
    Atkins, part of the SNC-Lavalin Group, is providing construction management services for the Oklahoma Turnpike Authority (OTA).
  • SRL’s outta sight VMS
    June 10, 2025


    England’s National Highways agency is using a variable message sign(VMS)  to display non-regulatory messages to indicate that maintenance teams may be out of sight.

    The is the first time that such messages have been displayed in an effort to better communicate to drivers that ahead lay obstacles, diversions road works. The system from SRL Traffic Systems is displaying wording not usually used, including ‘Working even out of view’, to provide an awareness of operations not within eyesight of a driver or outside of the public eye.