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Lapping of semi-rigid guardrail

Published: | Category: Road safety hardware and practice , Technical memoranda | Audience: Road traffic engineers & consultants

To advise on the recommended practice for the lapping of semi-rigid barrier systems (W-beam and thrie-beam).

Nesting of semi-rigid guardrail

Published: | Category: Road safety hardware and practice , Technical memoranda | Audience: Road traffic engineers & consultants

To advise on the recommended practice for the nesting of non-proprietary semi-rigid barrier systems (W-Beam and Thrie-Beam). Refer to manufacturer for nesting details for proprietary semi-rigid guardrail systems.

Guidelines for edge protection and medians on dual carriageway roads, incorporating a Safe System philosophy

Published: | Category: Road safety hardware and practice , Technical memoranda | Audience: Road traffic engineers & consultants

The launches of the Safer Journey’s initiative and the Decade of Action for Road Safety have brought the way we design for safety into focus. The purpose of this document is to define the Safe System philosophy for dual carriageway roads and how this may vary with context. In particular these guidelines are intended for use on all the roads of national significance (RoNS) projects.

Wire rope safety barrier (WRSB) transitions

Published: | Category: Road safety hardware and practice , Technical memoranda | Audience: Road traffic engineers & consultants

This technical memorandum provides advice on the recommended practice for the design and installation of transitions between wire rope safety barriers (WRSB) and semi-rigid and rigid barrier systems. The barrier configurations in the memo are generic. For specific details for proprietary barrier systems, contact the system supplier.

TL-4 transition detail

Published: | Category: Road safety hardware and practice , Technical memoranda | Audience: Road traffic engineers & consultants

This standard drawing shows details of the accepted W-beam to rigid barrier transition for use on state highways.

Nested guardrail detail

Published: | Category: Road safety hardware and practice , Technical memoranda | Audience: Road traffic engineers & consultants

This standard drawing shows details of the accepted nested guardrail configurations for semi-rigid guardrail as described in Technical memorandum TM2003.

Using low strength concrete around guardrail posts

Published: | Category: Road safety hardware and practice , Technical memoranda | Audience: Road traffic engineers & consultants

To advise on the recommended practice for using low strength concrete around guardrail posts that are installed in hard surfaces such as concrete footpaths.

Pipe handrails and fences

Published: | Category: Road safety hardware and practice , Technical memoranda | Audience: Road controlling authorities

This technical memorandum provides advice on the recommended practice for the mitigation of hazards associated with tubular handrails commonly installed for pedestrian/cyclist protection adjacent to roadways and on structures. This includes older tubular rail barrier systems on bridges with or without an adjacent footpath.

Curved terminal

Published: | Category: Road safety hardware and practice , Technical memoranda | Audience: Road traffic engineers & consultants

This standard drawing shows details of the accepted curved terminal end terminal treatment as described in Technical memorandum TM2008.

Temporary Concrete Barrier Public Domain Pin and Loop System (TCB-1)

Published: | Category: Road safety hardware and practice , Technical memoranda | Audience: Road traffic engineers & consultants

The Transport Agency temporary concrete road safety barrier design (TCB-1) is a metricated variant of the Oregon State Department of Transport (ORDoT) F-shape “Precast Concrete Barrier Pin and Loop Assembly” (RD500).  This is an accepted F-shape public domain temporary concrete road safety barrier system that has been tested in accordance with the United States Federal Highways Administration (FHWA) National Cooperative Highways Research Programme Project 350 (NCHRP350) protocol.  This design replaces all other public domain designs for temporary traffic management sites on the State highway network (refer TAN 15-08) unless a specific departure has been granted by the National Traffic & Safety Manager.
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