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Developing ULET Standards

Truck Grill


The UK Government’s 2018 Road-to-Zero Strategy committed to “working with industry to develop an ultra-low emission standard for trucks.” The initiative will provide clarity on anticipated emission standards and promote increased R&D and testing of suitable technologies. Establishing a ULET standard may allow for future incentives for the use of, or infrastructure for, cleaner alternatively fuelled HGVs.

Early in 2018, LowCVP was asked by Innovate UK to begin the process of developing a set of whole-vehicle emissions standards for HGVs (building Ultra-Low Emission Bus standards) to act as a benchmark for technology developers and OEMs aiming to have their vehicles recognised as Ultra-Low Emission Trucks (ULETs). The standards could also form the pillar for a subsequent government-incentivised market roll-out. The project will build on this initial set of ideas and principles to finalize a set of proposals for a ULET standard.


  • Defining an appropriate segmentation of HGV vehicle types
  • Defining how the GHG emissions from the existing test cycles should be combined into a single emissions figure for each segment
  • Defining an appropriate set of conventional diesel Euro VI baselines
  • Establishing an evidence-based set of ULET emissions reduction criteria
  • Ensuring appropriate links to existing policy mechanisms, e.g. Plug-In Van Grant
  • Ensuring the scheme can encourage a wide range of technologies including those aimed at light-weighting and capacity optimization for trailers.

Project Management and Stakeholder Engagement

LowCVP Secretariat in collaboration with stakeholders from CVWG, FWG, freight industry bodies, researchers and DfT.

Timeline and Deliverables

April 2019 – March 2020



Draft ULET proposals Complete
ULET criteria report Complete

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The LowCVP provides an effective way of engaging with a broad range of stakeholders and policy makers.
Sophie Ogunbiyi, Manager, External Affairs, Toyota Motor Europe