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DMRB: Control and Communications Technology TA 121 Ramp metering (formerly IAN 103/08, IAN 121/09)
Publication Year
2024
Document Status
Current
Abstract
Details requirements for ramp metering, including identifying suitable locations, appraisal and implementation.
Document History
Control and communications technology. Appraisal. Version 0.0.2. Supersedes TA 121 Ramp metering (formerly IAN 103/08, IAN 121/09) (HE, 2020). Supersedes IAN 103/08 Advice regarding the assessment of sites for ramp metering (HA, 2008) and IAN 121/09 Advice regarding the application of integrated traffic management (HA, 2009). Design manual for roads and bridges (DMRB). Version 0 - Jan 2020 - replaces IAN 103/08 and IAN 121/09. Version 0.0.1 - September 2024. Version 0.0.2 - October 2024 - republication with no content change, to correct index and version numbering.
Publisher Information
National Highways
National Highways is a government company, with responsibility for operating, maintaining and improving motorways and major A roads in England. It works with the Department for Transport and was previously known as Highways England and Highways Agency.
National Traffic Operations Centre
3 Ridgeway
Quinton Business Park
Birmingham
NHW
UK
Website: https://www.gov.uk/government/organisations/highways-england
Email: info@highwaysengland.co.uk
Tel: 0300 123 5000
