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DMRB: Control and Communications Technology TD 121 Ramp metering (formerly IAN 103/08, IAN 121/09). Version 0.0.1

Publication Year

2024

Document Status

Withdrawn

Abstract

Details the design requirements for ramp metering.

Document History

Control and communications technology. Design. Supersedes TD 121 Ramp metering (formerly IAN 103/08, IAN 121/09). (HE, 2020). Design manual for roads and bridges (DMRB) Version 0 - Jan 2020 - replaces IAN 103/08 and IAN 121/09. Version 0.0.1 - dated September 2024 - Changes made to core document, England NAA, and Northern Ireland NAA.

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