9Type-2 Mechanical and physical requirements#
9.1Type-2 General#
The mechanical and physical requirements defined in MRTS201 General Equipment Requirements and MRTS61 Gantries and Support Structures for Road Signs, Tolling Systems and ITS Devices apply to the PTSS and associated control electronics defined by this Technical Specification. Portable traffic signal lanterns shall be capable of being mounted on a pole that connects to a barrow or a trailer support structure.
All compartments that contain any electronic components shall have an ingress protection rating of at least IP45 as defined in AS 60529. A certificate or letter of compliance from a NATA approved testing facility shall be made available to the department upon request.
Support structure design documentation for Type-2 devices, shall be submitted to the Principal's representative for acceptance 28 days prior to manufacture. Hold Point 3
The PTSS shall be constructed from durable materials to enable installation and reliable operations.
9.2Type-2 Design life#
Unless otherwise specified, the design life of components shall be as follows:
- a)PTSS mechanical components and structure: a minimum of 20 years.
- b)PTSS and HRC electrical components and systems: a minimum of 10 years.
- c)Lantern body, structural supports and any mechanical accessories, including any protective coatings, are designed for a service life of at least 20 years.
9.3Type-2 PTS mounting#
The vehicle on which the PTSS is mounted or stored shall conform to the requirements of the host vehicle specified in AS 4191 and this Technical Specification.
9.3.1Type-2 Trailer / Barrow mounts#
Where the PTSS is mounted on a trailer or barrow (Figure 9.3.1), the PTSU and solar panel array shall have a mechanical system which allows it to be safely secured for transportation.
The mechanical system shall also allow for the PTSU and solar panel array to be safely erected on site to ensure the unit is clearly visible. A Type-2 PTSS shall have the capability to use a ballast such as sandbags to stabilise the structure.
The solar panels shall be adjustable to ensure optimum solar exposure and maximum energy generation anywhere in Queensland.
The mechanical systems shall also ensure that the PTSU and solar panel array cannot rotate due to wind gusts up to the ultimate wind speed the structure is designed for.
Any trailer units shall comply with the applicable clauses in AS 4191 and shall be suitable for registration in accordance with the statutory requirements of the State of Queensland.
9.3.2Type-2 Surface finishes#
The external finishes of equipment items shall be resistant to corrosion. All metal surfaces shall be painted in the range of high visibility colours from X15 Orange to X13 Marigold as specified in AS 2700. All surface finishes of PTSSs shall comply with AS 4191. The finish of lanterns, target boards and visors shall comply with AS 2144.
9.3.3Type-2 Mounting pole#
A Type-2 PTSU shall comply with the lantern mounting height requirements prescribed in the Queensland MUTCD Part 14, Section 5.2.
9.3.4Type-2 Dimensions#
A Type-2 PTSU shall not exceed dimensions that are unsafe or impractical to mount on a trailer.
9.3.5Type-2 Wind loading#
A Type-2 PTSS, shall have all components certified by a suitably qualified RPEQ to ensure that the PTSS will maintain its intended orientation and position when subjected to the wind loading conditions of the region in which the PTSS is intended to be deployed, in accordance with AS 1170.2.
9.3.6Type-2 Battery, controller and communications compartment#
The storage compartment shall incorporate room for a battery, communications and controller components. The compartment shall be key lockable and comply with applicable OH&S regulations and requirements.
Any storage compartments shall have dust and moisture ingress protection of at least IP45.
9.3.7Type-2 Stabilisers#
The PTSS shall be suitably designed to ensure stability of each PTSU when positioned on site. The type of stabilisers shall:
- a) allow for swivel
- b) be located on the 4 corners of the trailer or barrow, have fixed locations engineered to stabilise the barrow or tripod with the PTSU fully extended while meeting wind loading conditions
- c) be wind-down and readily storable for safe and secure moving
- d) have a load rating sufficient for levelling of the PTSU, and
- e) have a locking mechanism with removable handles and secure drive nuts.
9.4Type-2 Traffic signal lantern#
The traffic signal lantern requirements indicated below specifically refer to the physical lantern and not the electronic or optical performance requirements.
The traffic signal lantern and associated control electronics shall comply with the relevant requirements of MRTS201 General Equipment Requirements. All physical requirements of the lantern shall comply with AS 2144 unless otherwise specified.
9.4.1Type-2 Target boards#
Type-2 PTSSs shall use target boards in accordance with AS 4191. Target boards shall be manufactured from aluminium.
9.4.2Type-2 Visors#
Each aspect of each lantern shall be fitted with a visor in accordance with the requirements of AS 2144.
9.5Type-2 Hand-held remote controller#
The hand-held remote controller shall be lightweight, have a ruggedised construction, and be resistant to mishandling, shock and vibrations. The HRC shall have an ingress protection rating of at least IP65 as defined in AS 60529.