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CONSULT.Outcome publishedConsultation · gov.uk

Ending the longer semi-trailer trial

Asks if we should stop the longer semi-trailer trial ahead of schedule.

Last fetched 03 May 2026 · gov.uk
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Consultation asking if we should end the existing longer semi-trailer trial (LST). The trial, which started in 2012, is testing the theory that the use of LSTs should lead to journey reductions, which in turn would lead to a reduction in transport:

  • congestion
  • emissions

Although planned to run until 2027, we believe the trial has reached a point where continuing is unlikely to provide useful results and that remaining issues, relating to the safety, can only be answered outside of trial settings.

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