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TII Publication Title
Geometric Design of Junctions (priority junctions, direct
accesses, roundabouts, grade separated and compact
grade separated junctions)
TII Publication Number
DN-GEO-03060
Activity
Design (DN)
Document Set
Standards
Stream
Geometry (GEO)
Publication Date
April 2017
Document
Number
03060
Historical
Reference
N/A
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TII Publications
DN-GEO-03060
Geometric Design of Junctions (priority junctions, direct accesses, roundabouts, grade
separated and compact grade separated junctions)
April 2017
Page ii
Updates to TII Publications resulting in changes to
Geometric Design of Junctions (priority junctions, direct accesses, roundabouts, grade
separated and compact grade separated junctions) DN-GEO-03060
Date:
April 2017
Amendment Details:
This Standard supersedes:
a)
DN-GEO-03043 (TD 41-42) Geometric Design of Priority Junctions and
Vehicular Access to National roads.
b)
DN-GEO-03033 (TD 16) Geometric Design of Roundabouts.
c)
DN-GEO-03035 (TD 22) Layout of Grade Separated Junctions.
d)
DN-GEO-03042 (TD 40) Layout of Compact Grade Separated Junctions.
e)
DN-GEO-03045 (TD 51) Segregated Left Turn Lanes and
Subsidiary Deflection
Islands at Roundabouts.
f)
DN-GEO-03032 (TD 10) Road Link Design for Type 2 and Type 3 Dual
Carriageways. The details in relation to junctions on Type 2 and Type 3 Dual
Carriageways have been incorporated.
This standard combines the requirements of the above superseded standards into one consolidated
standard for the geometric design of junctions.
The principal changes from the previous Standards are:
General
a)
The following general chapters covering each junction type have been
developed based on information contained in the above superseded standards:
i)
Introduction
ii)
Junction Types
iii)
Road Safety
iv)
Selection
of Junction Type
b)
Information specific to each junction type has been included within individual
chapters within this standard.
c)
References to urban roads and streets and details in relation to urban junction
types are not included in this standard.
d)
Details of facilities for non-motorised users (NMUs) at junctions have been
included within this standard.
e)
DN-GEO-03047 Rural Cycle Scheme Design has been revised to
include only
for the design of cycleways i.e. roads reserved for the exclusive use of cyclists
or cyclists and pedestrians and has been renamed Rural Cycleway Design -
Offline.
f)
Details for Segregated left turn lanes at roundabouts are
now included in this
standard.
