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DMRB Volume 9 Section 3 TA 121 Control and communications technology. Appraisal. Ramp metering (formerly IAN 103/08, IAN 121/09)

Publication Year

2020

Document Status

Withdrawn

Abstract

Details requirements for ramp metering, including appraisal.

Document History

Superseded by TA 121 Ramp metering (formerly IAN 103/08, IAN 121/09) (NHW, 2024). 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) 9.3.1. Version 0 - Jan 2020 - replaces IAN 103/08 and IAN 121/09

Publisher Information

Highways England

Highways England is now known as National Highways and was responsible for the operation, maintenance and improvement of England's motorways and major A roads. It was an executive non-departmental public body, sponsored by the Department for Transport and was formerly known as Highways Agency.