DMRB: Road Layout CD 122 Geometric design of grade separated junctions (formerly TD 22/06, TD 39/94, TD 40/94). Version 1.1.0
Publication Year
2021
Document Status
Withdrawn
Abstract
Details requirements for geometric design of grade separated junctions, focussing on the form, merges and diverges, waving and spacing, and connector roads.
Document History
Superseded by CD 122 Geometric design of grade separated junctions (formerly TD 22/06, TD 39/94, TD 40/94). Version 1.1.1 (NHW, 2022). Road layout. Design. Supersedes CD 122 Revision 1 Road layout. Design. Geometric design of grade separated junctions (formerly TD 22/06, TD 39/94, TD 40/94). Revision 1 (HE, 2020). Supersedes: TD 22/06 Road Geometry. Junctions. Layout of grade separated junctions (HA, 2006) TD 39/94 Road Geometry. Junctions. Design of major interchanges (HA, 1994) TD 40/94 Road Geometry. Junctions. Layout of compact grade separated junctions (HA, 1994) Design manual for roads and bridges, DMRB. CD 122 Version 0 - August 2019. CD 122 Version 1 - January 2020: Updates references. CD 122 Version 1.1.0 - November 2021 - changes made to core document, England NAA.
Publisher Information
National Highways
National Highways is an executive non-departmental public body, sponsored by the Department for Transport. It has responsibility for operating, maintaining and improving motorways and major A roads in England. Formerly known as Highways England, between 2015-2021 and Highways Agency, between 1994-2015.
National Traffic Operations Centre
3 Ridgeway
Quinton Business Park
Birmingham
NHW
UK
Website: https://www.gov.uk/government/organisations/national-highways
Email: info@nationalhighways.co.uk
Tel: 0300 123 5000
