The information below is intended to reflect the preferred practice of Main Roads Western Australia ("Main Roads"). Main Roads reserves the right to update this information at any time without notice. If you have any questions or comments please contact Bita Charehjoo by e-mail or on (08) 9323 4439.
Amended clauses 2.1.10, 2.2, 2.3, 2.8, 3.2.1, 3.6.7, 7.3.Added clause 3.7.2
Main Roads will provide roadway and pathway lighting on urban freeways, highways and Control of Access Roads with high traffic volumes and Principal Shared Paths for users to travel safely at night. These will be provided in accordance with the requirements of this guideline.
The purpose of this document is to provide design guidelines for lighting for Road and Public Spaces, where the lighting is being built and maintained by Main Roads.
This Guideline outlines technical requirements for the design of Roadway and Pedestrian Lighting and shared paths, associated Electrical Design, Material and Lighting Software, and Documentation requirements.
In addition to complying with the technical requirements as outlined herein, and any requirements or regulations of the Office of Energy, WA, and the regulations of Western Power or other supply authorities, all roadway and pathway lighting designs shall comply with the relevant standards listed below, including all amendments thereto which are current at the date of the design.
For policy statement, application, approval and administration guidelines refer to online guidelines as provided below:
Contact details for Fremantle Ports Authority is listed below:
Manager Electrical & Mechanical ServicesFremantle PortsTel: (08) 9430 3555 or 9430 3312Email: firstname.lastname@example.org
The maintenance factor (MF) associated with the formulated maintenance regime for the Light Technical Parameters shall be 0.7 in accordance with Main Roads principal and policy requirements and calculated as per guide provided in AS/NZS1158 series.
- Details of cable sizes, circuit diagram, main switchboard and its location,
- The electrical circuits forming the controls and switches,
- Schedules of luminaries, their poles/pits, circuits and their phases, Pole numbers, etc.
- Conduit sizes, road crossings, cable pits
- Material or equipment quantities and other relevant details. [Refer to Section 4 of this Guideline for more information]
The design shall use inter-leaved three-phase circuits for providing supply to the roadway lighting system except for some minor luminaries and other low load circuits such as Public Lighting where single-phase supply may be employed. [Refer to Clause 3.3 of this Guideline].
Three phase electrical loads shall as far as practically possible be evenly distributed across each circuit.
The electrical design shall provide optimum cable size and length for circuit to meet all requirements within this guideline where, the cable rum is not greater than 1000m and switchboard should be installed halfway across the circuit to provide ease of access and clear visible line of sight.
2.1.9 Power Supply
Power supply shall be 415 V a.c. 50 Hz, three-phase active, neutral and earth or 240 V a.c. active, neutral and earth. Allowable voltage and frequency variations shall be as permitted by Western Australian Electrical Requirements, whose custodian is the Office of Energy.
The design shall be submitted to the Electricity Supply Authority (i.e. Western Power or some other private operator as the case may be) proposing the Point of Attachment, its location and the type of connection, that is, whether the supply shall be via an aerial cable and service pole or underground power cables in conjunction with a ground mounted service pillar. The preferred method of supplying electrical power is via underground cables.
Lighting poles shall be installed at the set-back distance detailed below:
On no account shall the pole be mounted on the road shoulder (whether sealed or unsealed), which is that designated portion of the at-grade surface contiguous with edge of the traffic lane.
2.1.15 Verge Width Requirements and Localised Widening
Minimum 2 m clear distance is required between the edge of light pole footing and the edge of batter for light pole installation. When the distance is less than 2 m, localised widening (refer to drawing 201331-0008) is required to provide 2 m radial clearance from edge of pole footing.
2.1.16 Emergency Stopping Bays and Light Poles Location
Refer to Technical Guidelines – Emergency Stopping Bays (D10#80939).
The following Main Roads physical parameters shall be stringently followed when designing roadway lighting:
The design for supplementary pedestrian lighting for mid block crossings shall comply with the requirements of AS 1158.4. The mounting height and the distance of the floodlights from the centre of the crossing are usually determined in accordance with AS 1158.4.
Generally, the guidelines of design for Bridge Lighting and Tunnels shall comply with AS/NZS1158.5, Austroads-Traffic Engineering Practice Series Roadway Lighting requirements and the specific requirements as detailed below.
Clause 2.5 of this guideline should be applied when undertaking the lighting design for underpass or short tunnel lighting. It is usual to take into account the contribution of flux from other sources in the vicinity though this is often negligible given the low height of the underpass or tunnel and the comparatively high level of externally mounted road lighting luminaires. However, the multiple internal reflections from the soffit and wall of the underpass or short tunnel due to the luminaires installed therein can be taken into consideration based on AS 1680.1. The designed luminance level for the road surface should not be less than that of the road, which traverses through the underpass or tunnel.
In special locations such as grade-separated interchanges or other road sections having unusual geometry or other reasons such as energy costs, aesthetics and controls of Light Pollution, it may be necessary to use high mast lighting system. Where such a need arises, the necessary information, technical data and a cost benefit analysis of such a system shall be submitted as part of the design. These shall include but not limited to the following:
Main Roads may be involved in the design and construction of roads where roadway lighting would be designed to AustRoads lighting standards and involvement from Western Power may be required.
Applications for the provision of a supply for lighting, or for Western Power lighting, can be submitted via the Western Power website at www.westernpower.com.au
If the request is for an indicative cost, or a discussion with a Design Specialist is required, please use the Feasibility Study application at https://www.westernpower.com.au/services/feasibility-study/Enquiries can be made to Western Power on 13 10 87.
All channelized and signalised intersections are to be provided with roadway lighting to the requirements of V3 category of lighting. And illuminance based design method shall be applied. The scope of lighting is equal to the extent of civil works with the inclusion of one existing light pole from each approach.
Main Roads should be consulted with regards to impact of additional lighting in proximity of Main Roads' Lighting. This is inclusive of parking lighting, local street lighting, commercialised and sign lighting owned by others.
Ramps with metering signals are to be provided with roadway lighting to the requirement of V3 category lighting, for the length of the ramp.
The following Main Roads physical parameters shall be stringently followed when designing RTAA lighting:
Refer to Design Guidelines for Solar Power Lighting.
Refer to Guidelines for Roadside Advertising Signs.
MRWA recommends the following points to be considered when designing a switchboard:
Where it has been determined that isolation transformer is required, the designer is required to follow the PTA's "Guideline for Earthing and Bonding in the 25kV AC Electrified – Part 4 – General Light & Power Supplies - Rev 1.1", Section 5.2.2 Part A where the transformer is in a separate cabinet from the supplying switchboard earthed to WP.
A written approval of the proposed design should be sought from PTA.
The installation shall be EFLI compliant.
All cable and wiring shall comply with AS/NZS 3000 and Main Roads Specification 701 for the Installation and Maintenance of Roadway Lighting. All cables shall have stranded copper conductors and double insulated PVC with an insulation rating of 0.6/1kV.
- Active conductors - Red (R), White (W) and Blue (B)
- Neutral conductors - Black
- Earth conductors - Yellow/Green
All conduits used for running the cable shall be heavy duty PVC conduit conforming to AS/NZS 2053 Series and the amendments thereto, and shall be of the following sizes:
- 80 mm conduit - between Point of Attachment (P.O.A) and Main Switchboard
- 80 mm or 63 mm conduit - between cable pits. 80 mm conduit should be used for 25 mm2 cable
- 32 mm corrugated conduit - between cable pit and pole.
- 150 mm PVC conduit complying with AS/NZS 2053.
- 300 mm DN Fibre-Reinforced Concrete Pipe conforming to AS 4139.
- 140 mm diameter Class 9 PE (preferred option).
All lighting luminaires shall in general comply with the requirements of Main Roads Specification 701 - Roadway Lighting.
The 250-watt HPS lamp specified is the lamp used in a vast majority of cases but in some instances, 400-watt HPS lamp or higher may be used where the road geometry or other site conditions warrant it, as in the case of high mast lighting.
The designer shall at all times select the most suitable Luminaire for the project in terms of cost effectiveness , luminaire spacing and maintenance requirements as identified under Clause 2.1.14. The Designer's recommendation should be finalised and submitted at 15% and 85% design review stage. Refer to Appendix B for guidance.
3.6.3 Over-bridge/Overpass Lighting Luminaires
Luminaires for over-bridge lighting are similar to those specified for road lighting as detailed in Clause 3.6.1 above.
Luminaries shall comply with AS/NZS 1158.6 and AS/NZS 60598. Main Roads currently uses the following RTAA luminaires:
3.6.6 Other Approved Products
Main Roads has also approved ATCO Ignitor (Catalogue No AMZN400/T1) under Lighting approved product list.
3.6.7 LED Lighting
The designer is required to seek approval to proceed with LED lighting design at 15% design phase submission. The supporting document should be prepared in accordance with Appendix B in this document. LED lighting will be assessed using the method outlined in Appendix B.
- Round Roadway Light poles (Maintenance purposes only) 9220-0636 and 9220-0637 ADDITIONAL NOTES: All modification to existing sites under projects shall comply with Octagonal light poles requirements. Use of round poles shall be limited to existing lighting schemes, if advised under the scope of work.
- Octagonal Roadway light poles (Slip Base type) 0530-1456 and 0530-1457
- Pedestrian Shared Path Light Pole 0448-3007 and 0448-3008
- Joint use of Roadway light pole and Emergency Telephone (Impact absorbent) currently are not being installed. 0348-3123/, 0448-3012 and 9220-670
It is a requirement to provide an optimum cables size under the design which allows for
Numbers as specified by Main Roads Western Australia shall be allocated to the switchboard and each light pole. Once the switchboard number is fixed, all other items such as circuit, pole and pit numbers shall be prefixed with the switchboard number for ease of identification. Please refer to Clause 3.8 of this Guideline for further details on referencing of circuits, poles and pits.
In documenting the design drawings shall conform to MRWA's Drawing Presentation Guideline, the requirements of Section 11 of AS/NZS 1158.1.3 and Main Roads Specification 701.
Upon completion of all works on sites deign drawings shall be amended and modified to represent the asset as built on site. The preparation of As Constructed/Asset Drawings shall be in accordance with Main Roads Design and Drawing Presentation Guideline for As Constructed Asset drawings.
Click here to access Design Guideline Drawings
6. APPENDIX A: SPECIFICATIONS FOR HPS LAMPS & IGNITERS
Luminaire Type shall be selected in accordance with the requirements set out under Appendix A of this document and Main Roads Specification 701 - Supply and Installation of Roadway Lighting Equipment.
It is designer’s responsibility to submit his recommendation and seek Main Roads approval.
The supporting documentation provided to Main Roads for approval could cover the information listed in the below example and any other relevant information related to the design.
- At installation stage, a saving of 4 light poles complete with footing, outreach, internal wiring, cable pits and Luminaires would be achievable.
- Maintenance cost is reduced by approximately 16% (less number of light poles are required to be maintained).
- Running cost is reduced by approximately 16%.
- Australian Standard is still complied with.