ITS specification Lane control system civil and structural works (ITS-04-01)

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1 ITS specification Lane control system civil and structural works (ITS-04-01) NZ Transport Agency Effective from September 2011

2 Copyright information This publication is copyright NZ Transport Agency (NZTA). Material in it may be reproduced for personal or inhouse use without formal permission or charge, provided suitable acknowledgement is made to this publication and the NZTA as the source. Requests and enquiries about the reproduction of material in this publication for any other purpose should be made to: NZ Transport Agency Private Bag 6995 Wellington 6141 The permission to reproduce material in this publication does not extend to any material for which the copyright is identified as being held by a third party. Authorisation to reproduce material belonging to a third party must be obtained from the copyright holder(s) concerned. Disclaimer The NZTA has endeavoured to ensure material in this document is technically accurate and reflects legal requirements. However, the document does not override governing legislation. The NZTA does not accept liability for any consequences arising from the use of this document. If the user of this document is unsure whether the material is correct, they should refer directly to the relevant legislation and contact the NZTA. More information Published September 2011 If you have further queries, call our contact centre on or write to us: NZ Transport Agency Private Bag 6995 Wellington 6141 This document is available on the NZTA s website at

3 Page i Document management plan 1) Purpose The purpose of this document is to specify the general requirements for LCS site civil and structural works installation. 2) Document information Document name Document number Document status Document availability ITS specification: Lane control system civil and structural works ITS Final This document is located in electronic form on the NZ Transport Agency s website at Document author Waterview ITS Requirements Working Group: Jamie French Jamie.French@beca.com (09) Tom Harris Tom.Harris@opus.co.nz (09) Document owner Henry Pretorius 3) Key words ITS LCS civil and structural works requirements.

4 Page ii Record of amendments Amendment number Section amended Description of change Updated by Effective date Draft R0 All ITS Draft Specifications Issue TLH 21/9/2010 Draft R1 All AMA Specifications Review JF & TLH 25/1/2011

5 Page iii Contents Document management plan Record of amendments i ii 1.0 Lane control system field installation Scope Civil and motorway site works Design requirements Construction Lane control signal gantries Gantry type Gantry design requirements Construction 2

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7 Page Lane control system field installation 1.1 Scope This section sets out the requirements for the supply and construction of the civil and structural works for the lane control system (LCS) field installations. Each LCS field installation shall provide specific, localised lane availability status and advisory speed information to motorists, using multiple display devices, and shall comprise the following elements: a. Lane signalling units (LSU), capable of displaying a limited set of lane use and speed advisory messages complemented by amber flashers; b. Overhead gantry sign support structure, which positions the LSUs above the motorway lanes; c. Ancillary control and communications equipment. Each LCS field installation shall consist of: a. Lane control signals, including all components (i.e. Display matrix, driver electronics, photo-sensors and necessary environmental control equipment); b. LCS controller (field control device); c. LCS support structure; d. Power supply; e. Communications interfacing equipment; f. Roadside cabinet, plinth and apron; g. Paved access area; h. Guardrail protection and other accessories as necessary. 1.2 Civil and motorway site works Design requirements At each LCS support structure foundation there shall be two 50mm N.B. ducts with long radius bends from the roadside control cabinet, one into the centre of each LCS gantry shoulder leg column; A concrete apron having a thickness of 100mm and 1 metre in width shall be constructed under the LCS gantry shoulder leg access ladder. The apron shall have a fall of 30mm towards the outer edge to shed storm-water runoff. The apron concrete surface shall be lightly broomed to provide a non slip finish; The area surrounding the LCS gantry shoulder leg shall, if necessary shall be contoured to ensure that there is no ponding of surface runoff water and shall be re-topsoiled, grassed and finished in a workmanlike manner. Where practicable a safe stopping area for a maintenance vehicle shall be provided with access to the LCS gantry shoulder leg. The design of the site works for each LCS site shall comply with the NZ Transport Agency s (NZTA) ITS specification: Support structures and foundations (ITS-01-05).

8 Page Construction The site works construction at each LCS site shall comply with the NZTA s ITS specification: Civil and motorway site works (ITS-01-04). 1.3 Lane control system gantries Gantry type LCS gantry structures shall be truss gantries with the LSUs separately bolted onto the gantry truss. The LSUs shall be located over the centre of each lane under the LCS gantry. The LCS gantries shall be portal gantries spanning from the shoulder berm to the motorway median Gantry design requirements LCS gantry structures shall be galvanized steel truss gantries and shall include the following: a. Steel plate section column detail to prevent the general public from climbing the structure; b. Access ladder with hoops and padlocked security gate on the gantry shoulder leg; c. 1.5m deep gantry truss with full width checker plate walkway extending across the truss bay where the median end Lane Signal Unit is mounted; d. LCU support frames allowing the LCU to be vertically and horizontally aligned to maximise viewing distance; e. Handrails around the full extent of the walkway and the ends of the VMS support frame; f. 200mm by 50mm slotted holes in the traffic face of both gantry shoulder leg columns above the base of the leg and above the truss bottom chord for cable access. The gantry truss shall be level across the carriageway and the minimum clearance to the LCU or the gantry structure shall be from the highest level on the trafficked lanes. For locations where the LSU s share a gantry with other display equipment such as SLVMS, VMS, or static signs, the LSU shall be mounted closest to the motorway. The design of LCS supporting structures shall comply with the NZTA s ITS specification: Support structures and foundations (ITS-01-05) Construction The construction of LCS supporting structures shall comply with the NZTA s ITS specification: Support structures and foundations (ITS-01-05).