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11. Technical Requirements—Types of trailer covered under VSB1. 11. Technical Requirements—Types of trailer covered under VSB1.
back to top 12. Definitions12.1 The ActMeans the Motor Vehicle Standards Act 1989. 12.2 The ADRsThe ADRs mean the Australian Design Rules Note: The Australian Design Rules are national standards determined by the Australian Government under section 7 of the Act. 12.3 Road TrailerA road trailer has the same meaning as under the Act. Note: Under section 5 of the Act, a road trailer means:
12.4 Trailer CategoriesVery Light Trailer (TA)—A single-axle trailer with a GTM not exceeding 0.75 tonne. LIGHT TRAILER (TB)—A trailer with a GTM not exceeding 3.5 tonnes, other than a trailer of Category TA. MEDIUM TRAILER (TC)—A trailer with a GTM exceeding 3.5 tonnes but not exceeding 10 tonnes.
12.5 Aggregate Trailer Mass (ATM)ATM is the total mass of the trailer when carrying the maximum load recommended by the manufacturer. This includes mass imposed onto the towing vehicle when the combination vehicle is resting on a horizontal supporting plane. 12.6 Gross Trailer Mass (GTM)GTM is the mass transmitted to the ground by the tyres of the trailer when coupled to a towing vehicle and carrying the maximum load recommended by the manufacturer or importer, approximately uniformly distributed over the load bearing area. 12.7 Tare MassTare Mass is the total mass of the trailer when not carrying any load, but when ready for service, unoccupied (if relevant) and with all fluid reservoirs (if fitted) filled to nominal capacity except for fuel, which shall be 10 litres only, and with all standard equipment and any options fitted. This includes any mass imposed onto the drawing vehicle when the combination vehicle is resting on a horizontal supporting plane. (Fluid reservoirs do not include water tanks and waste water tanks fitted to caravans). 12.8 Length (Total Length)Length is the longitudinal distance between the ‘Front End’ and the ‘Rear End’ of a vehicle. 12.9 Width (Overall Width)Width is the maximum distance measured across the body including wheel guards, but excluding rear vision mirrors, signalling devices and side-mounted lamps. 12.10 D-ValueD-Value is the theoretical horizontal reference force between towing vehicle and trailer. 12.11 V-ValueV-Value is the theoretical vertical reference force between towing vehicle and trailer. Note These definitions are in accordance with the ADRs. These may differ from other definitions generally in use. A complete list of definitions is available via infrastructure.gov.au/vehicles/design/adr_online.aspx 12.12 The difference between a trailers ATM and GTM.Note back to top 13. Lighting.The requirements specified in the ADRs for the performance and installation of lamps and reflectors are based on the regulations set by the United Nations Economic Commission for Europe (ECE). The performance requirements usually involve tests done in a laboratory to show compliance. Trailer manufacturers must ensure that the lamps and reflectors fitted to their trailers comply with these performance requirements. This may be done by: using lamps and reflectors where the lamp manufacturer provides a written assurance that the item (suitably identified) complies with the ADR applicable to its recommended use when fitted according to the instructions supplied. This is either through having either a Component Registration Number (CRN ) listed on the Road Vehicle Certification System (RVCS) at rvcs.infrastructure.gov.au . CRNs can be checked by entering the number given by the component manufacturer into the approval number field on the Vehicle / RVD search page or through an internationally based ECE approval (see below); or by having the lamps and reflectors tested to the ADR requirements and obtaining from the laboratory conducting the tests, a test report including the conclusion that the item complies with the ADR applicable to its intended use when fitted according to the instructions supplied with the report; and in either case, fitting the lamps and reflectors according to the instructions provided, making sure that no part of the trailer or its equipment obstructs the lamp output. The trailer manufacturer must retain these documents in case verification of compliance is needed. Lamps and reflectors complying with certain international regulations, referred to as ECE Regulations, are acceptable as complying with some of the lighting ADRs. These ECE Regulations are identified in the table below. Unlike lamps directly approved to an ADR, lamps certified to ECE requirements as the basis of compliance with the corresponding ADR requirements will provide an ECE approval mark on the lens or body of the lamp. This can be used for identification of the component against the written assurance provided with each item. Both ECE approved lamps and lamps with a CRN should be accompanied by fitting instructions, to ensure correct orientation and alignment. A typical ECE approval mark found on a rear direction indicator is as follows:
Unless specifically mentioned, lamps on a trailer must operate with the corresponding lamps on the towing vehicle, and where pairs of lamps or reflectors are fitted, they must be spaced equally on either side of the centre line of the trailer. Lamps on a trailer must not show red light to the front or white light to the rear (except reverse lamp). A summary of the requirements for each type of lamp and reflector are given in the table below and in the diagrams in the sections that follow. The notation ADR 49/- (for example) refers to the latest version of ADR 49 and ECE R7/- refers to the latest version of ECE Regulation 7.
Note: “Grouped lamps” have separate bulbs and lenses (or LED elements) but a common lamp body (e.g. rear position/indicator lamp). “Combined lamps” have separate lenses but a common bulb (or LED element) and lamp body (e.g. rear position/registration plate lamp). “Reciprocally incorporated lamps” have a separate bulb but a common or partly common lens and lamp body (e.g. rear position/stop lamp). (Refer to ADR 13/00, for further information). 13.1 Front Position (Side) LampsThese lamps indicate the presence and width of a trailer when viewed from the front. Presence: Must be fitted if a trailer is more than 1600 mm wide and over 4 metres long, or over 1800 mm wide. Number: 2. Arrangement: At the front. See Figure 1. For trailers 2100 mm wide or less, may be combined with 2 side-marker lamps that have been fitted, this being in accordance with Option 1 or Option 2 (see Section 13.8). Electrical Connections: Must operate with rear position, end-outline (if fitted), side-marker (if fitted) and rear registration lamps. (For further information, refer to ADR 13/00 Appendix A clause 6.9 and ADR 49/00). 13.2 Rear Position (Side) Lamps (Tail Lamps)These lamps indicate the presence and width of a trailer when viewed from the rear. Presence: Must be fitted. Number: 2. Arrangement: At the rear. See Figure 1. Electrical Connections: Must operate with front position (if fitted), end-outline (if fitted), side-marker (if fitted) and rear registration lamps. (For further information, refer to ADR 13/00 Appendix A clause 6.10 and ADR 49/00). 13.3 Rear Stop Lamps (Brake Lamps)These lamps indicate to the rear of the trailer that the driver is applying the service brakes. Presence: Must be fitted. Number: 2. Arrangement: At the rear. See Figure 1. Electrical Connections: Must operate with service brake on towing vehicle and (if fitted) service brake on trailer. (For further information, refer to ADR 13/00 Appendix A clause 6.7 and ADR 49/00). 13.4 Direction Indicator Lamps (Turn Signals)These lamps indicate to the rear and the side of the trailer that the driver is intending to change direction to the left or the right. Presence: Must be fitted. Number: 2. Arrangement: At the rear. See Figure 1. One pair of side-repeating indicators may also be fitted approximately half way along semi-trailers that are over 7500 mm long. Electrical Connections: Must operate by a single control, independently of all other lamps, and must flash in phase all on one side. The flashing must be must be within the range of 60 to 120 flashes per minute. (For further information, refer to ADR 13/00 Appendix A clause 6.5 and ADR 6/00). 13.5 Rear Registration Plate (Number Plate) LampThis lamp(s) illuminates the space reserved for the rear registration plate. Presence: Must be fitted. Number: At least 1 (note that some lamps may only have been approved for fitment as a pair). Arrangement: At the rear and so that the rear registration plate is illuminated. No light is to be directed rearwards. Electrical Connections: Must operate with front position (if fitted), rear position, end-outline (if fitted) and side-marker (if fitted) lamps. (For further information, refer to ADR 13/00 Appendix A clause 6.6 and ADR 49/00). 13.6 Hazard Warning SignalThis is the simultaneous operation of all the trailer's direction indicator lamps to show that the trailer temporarily presents a special danger to other road users. Presence: See below Number: See below Arrangement: See below Electrical Connections: All direction indicators on the trailer must operate simultaneously with hazard warning lamps of the towing vehicle. (For further information, refer to ADR 13/00 Appendix A clause 6.6 and ADR 49/00). 13.7 End-Outline Marker (Clearance) LampsThese lamps indicate the presence, width and height of a trailer when viewed from the front or rear. Presence: Must be fitted if a trailer is more than 2100 mm wide. Number: 2 to the front (white or amber) and 2 to the rear (red). Arrangement: At the front and the rear. See Figure 1. If a trailer has no structure at the front and at the rear to which lamps can be attached (such as a boat trailer), then one combination white (or amber) /red end-outline marker lamp midway on each side may be fitted instead. Electrical Connections: Must operate with front position (if fitted), rear position, side-marker (if fitted) and rear registration lamps. (For further information, refer to ADR 13/00 Appendix A clause 6.13 and ADR 49/00). @ May be increased to 2100 mm if the structure makes it impractical to keep within 1500 mm. * May be reduced to 400mm where the overall width of the trailer is less than 1300mm. # Compatible with the operational requirements of the trailer and the requirement to keep the dimensions symmetrical on either side. Note: 13.8 Side-Marking (Marker) LampsThese lamps indicate the presence and length of a trailer when viewed from the side. Either Option 1 or Option 2 must be met. Option 1 is based on an international standards arrangement (an option may be chosen even if it results in no side-marker lamps having to be fitted to a particular trailer). Both options are shown below. Option 1Presence: SM1 type lamps must be fitted if a trailer is more than 6000 mm long. Note Number: Such that the Arrangement below is met. Figure 2(a) Side Lamps—Dimensional Limits (Option 1)@ May be increased to 2100 mm if the structure makes it impractical to keep within 1500 mm. Note Option 2Presence: Must be fitted if a trailer is more than 2100 mm wide or more than 7500 mm long. Must be fitted to all semi-trailers. Number: 2 towards the rear if a trailer is more than 2100 mm wide. 2 towards the front plus 2 towards the rear, if a semi-trailer is equal or less than 7500 mm long. 2 towards the front plus 2 towards the rear, plus 2 midway between the front and the rear lamps, if a trailer over 7500 mm long. Additional pairs of side marker lamps, equally spaced between the front and the rear lamps, may also be fitted, as long as the distances between the centres of adjacent lamps is not more than 5000 mm. Arrangement: At the side. See Figure 2(b). In width, the outermost surface of the lamp must not be more than 150 mm inboard of the extreme outer edge of the trailer. Electrical Connections: No requirement. (For further information, refer to ADR 13/00 Appendix A clause 6.8 and ADR 74/00). Figure 2(b) Side Lamps—Dimensional Limits (Option 2)@ May be increased to 2100 mm if the structure makes it impractical to keep within 1500 mm. ## Also all semi-trailers regardless of size. * May be increased to as close as possible to the front and/or rear respectively if the structure makes it impractical to keep within 300 mm (for example a boat trailer). Where this is the case, and the distance between the front and rear lamps would then be less than 2500 mm, only the rearmost lamps need be fitted. Note 13.9 Retro (Reflex) ReflectorsRetro-reflectors indicate the presence of a trailer by reflecting light from a separate source. (For further information, refer to ADR 13/00 and ADR 47/00) 13.10 Front Retro (: Reflex) Reflectors (Non triangular)Presence: Must be fitted. Non-triangular only. Number: 2. Arrangement: At the front. See Figure 3. Electrical Connections: No requirement (For further information, refer to ADR 13/00 Appendix A clause 6.16 and ADR 47/00) 13.11 Rear Retro (Reflex) ReflectorsPresence: Must be fitted. Triangular or non-triangular. Number: 2. Arrangement: At the rear. See Figure 3. Triangular the apex of triangle must point upwards. Non-triangular rear retro reflectors are not required to be grouped together with other rear light-signalling devices. Electrical Connections: No requirement (For further information, refer to ADR 13/00 Appendix A clause 6.15 or 6.14 and ADR 47/00) 13.12 Side Retro (Reflex) Reflectors (Non Triangular)Presence: Must be fitted. Non-triangular only. Number: Such that the Arrangement below is met. Arrangement: At the side. See Figure 4. Electrical Connections: No requirement. (For further information, refer to ADR 13/00 Appendix A clause 8.7 and ADR 47/00) Figure 3 Front and Rear Retro-Reflectors—Dimensional Limits@ May be increased to 1500 mm if the structure makes it impractical to keep within 900 mm. Figure 4 Side Retro-Reflectors—Dimensional Limits@ May be increased to 1500 mm if the structure makes it impractical to keep within 900 mm. Note 13.13 Reversing LampsPresence: Optional on all trailers. Number: 1 or 2 lamps must be fitted on all trailers with a length less than 6,000mm. 2 lamps must be fitted on all trailers with a length greater than 6,000mm. Arrangement: At the rear. A minimum height of not less than 250mm from the ground; and maximum height of 1,200mm from the ground. Electrical Connections: The lamps light up when reverse gear is engaged on the towing vehicle. (For further information, refer to ADR 13/00) 13.14 Grouping of Rear LampsRear position (side) lamps, stop lamps, direction indicator lamps, registration plate lamps and retro-reflectors may be grouped into the same units, as long as their individual requirements are met. The following are examples of acceptable arrangements. (For further information, refer to ADR 13/00) back to top 14. Electrical WiringTrailer wiring must:
(For further information, refer to ADR 42/04 clause 9) Note Trailers that do not exceed 3.5 tonnes ATM must have electrical connectors between the trailer and towing vehicle that comply with Australian Standard AS 2513-1982 ‘Electrical Connectors for Trailer Vehicles’ or Australian Standard AS 4177.5-2004 ‘Caravan and light trailer components, Part 5: Electrical connectors’. Trailers over 3.5 tonnes ATM may use electrical connectors complying with ISO 1185-2003 or SAE J560-1998 Standards for electrical connectors between towing vehicles and trailers as alternative standards. Three types of seven pin connectors are specified in the Standard and their wiring is shown in the below figure. Twelve pin connectors are also specified in the Standard. Note Lamps and wiring may be detachable from trailers such as boat trailers, where they are exposed to conditions such as immersion in water, which might cause short-circuiting or other malfunctions. Electrical installations on a trailer that are intended for connection to a power system other than that of the drawing vehicle must comply with Australian Standard 3001-1981 ‘Electrical Installations in Caravans and Caravan Parks’ or Australian Standard AS 3001-2001 Electrical Installations—‘Relocatable premises (including caravans and tents) and their site installations’. Note Front view of trailer plugs (Type 1 and Type 2 plugs also have a locating notch at the bottom): back to top 15. Braking15.1 Trailers that do not exceed 0.75 tonne GTM with a single axleNo brakes are required. (For further information, refer to ADR 38/02 clause 5) Note 15.2 All other trailers that do not exceed 4.5 tonnes ATMThese trailers must be fitted with an efficient brake system that complies with ADR 38/-. Except for over-run brakes, all brakes must be operable from the driver's seat of the towing vehicle. For trailers up 2 tonnes GTM, an efficient braking system is considered to have brakes operating on the wheels of at least one axle. Over-run brakes may only be used on trailers that do not exceed 2 tonnes GTM. Every trailer over 2 tonnes GTM must have brakes operating on all wheels. The brake system must cause immediate application of the trailer brakes in the event of the trailer becoming detached from the towing vehicle. Under these circumstances, the brakes must remain applied for at least 15 minutes. All flexible hydraulic brake hoses, air or vacuum brake tubing and air and vacuum flexible hoses must conform to SAA, SAE, BS, JIS, DIN, ISO or ECE Standards and be fitted to the vehicle in a way that will prevent chafing, kinking or other mechanical damage under normal motion of the parts to which they are attached. (For further information, refer to ADR 38/02 clause 5) Note back to top 16. Drawbars, Safety Chains, Safety Chain Attachments and Couplings16.1 DrawbarsDrawbars must be securely attached to a substantial portion of the trailer. Drawbars must withstand the following forces applied at the centre of the intended coupling without detachment or any distortion or failure, which will affect the safe drawing of the towed trailer:
(For further information, refer to ADR 62/01 clause 14) 16.2 Drawbar Safety ChainsAll pig trailers with rigid drawbars (with or without breakaway brakes—but excluding converter dollies) and, any other trailer without breakaway brakes, must be fitted with safety chains that are marked in accordance with the relevant Australian Standard and (or cables as applicable) complying with the following:
Caution (For further information, refer to ADR 62/01 clause 14) 16.3 Drawbar Safety Chain Attachment PointsSafety chain attachment points are the means by which the safety chains are attached to the drawbar. These points must be located as near as practicable to the tow coupling. Where two points of attachment are required, they must be mounted one on either side of the centreline of the drawbar. Longitudinal tension and compression (N) 1.5 x 9.81 x ATM (in kg) Vertical tension and compression (N) 0.5 x 9.81 x ATM (in kg). (For further information, refer to ADR 62/01 clause 14) Caution Caution 16.4 CouplingsTrailers that do not exceed 3.5 tonnes ATM must have a quick release coupling which is designed to be engaged and disengaged without the use of tools. It must be of a positive locking type with provision for a second independent device. The locking must be readily verifiable by visual inspection. All couplings must be marked in accordance with ADR 62/01 or >ADR 62/02. These in turn call up various Australian Standards or (as with lamps and reflectors) an internationally based ECE regulation R55/-. There is also provision for alternative couplings, with marking specified in Clause 12.4 of ADR 62/01 and ADR 62/02. If you intend to manufacture your own coupling, then you will need to consult ADR 62/01 or ADR 62/02 and conduct physical testing to ensure compliance. Two common coupling types are outlined below: 16.4.1: 50mm Ball Couplings Ball couplings used on trailers with an ATM that does not exceed 3.5 tonnes must comply with Australian Standard AS 4177.3-2004 Caravan and light trailer towing components Part 3: Coupling body for ball couplings. Ball couplings on towbars are required to be installed so that the height of the centre of the body of the ball coupling is between 350mm and 420mm from the ground when laden (Refer to ADR 62/01). Alternatively, if complying with the requirements of ADR 62/02 the maximum height of the centre of the body of the ball coupling may be increased to 460mm. However, the ball may be installed at any other height, provided it is also capable of being adjusted to at least one height within the 350-460mm range. The coupling body used on trailers should be designed to be compatible with these heights. Alternatively, ball couplings may instead comply with ECE R55/- as Class B coupling heads. A coupling body complying with AS 4177.3 must be marked with:
A coupling body complying with ECE R55/- must be marked with:
(For further information, refer to ADR 62/01) Caution 16.4.2 Fifth Wheel Assemblies and KingpinsFifth Wheel Assemblies and Kingpins with a D-Value rating of 40 kN or less, must comply with Australian Standard AS 4968.1-2003 Heavy road vehicles—Mechanical coupling between articulated vehicle combinations, Part 1 Design criteria and selection requirements for fifth wheel, kingpin and associated equipment, or to other requirements as listed in ADR 62/02. Alternatively, they may instead comply with ECE R55/- as Class G fifth wheel couplings and Class H fifth wheel coupling pins. A coupling complying with AS 4968.1 must be marked with:
Note A coupling complying with ECE R55/- must be marked with: the manufacturer's name or trademark;
The ADR also allows fifth wheel assemblies and kingpins to instead be rated and marked with the allowable ATM, as long as this does not exceed 3.5 tonnes. (For further information, refer to ADR 62/01) back to top 17. Wheel Guards (Mudguards)All wheels of a trailer must be fitted with wheel guards that are designed to protect other road users against thrown-up stones, mud, ice, snow and water and to help prevent people contacting the moving wheels. The wheel guards on the rearmost wheels must provide continuous protection between a point in area ‘A’ and a point in area ‘B’ in the figure above, and must cover the overall width of all tyres. In the case of steerable wheels, the requirements only apply when the wheels are in the straight-ahead position. Where two or more axles form an axle group, separate wheel guards may be fitted to each wheel or a single wheel guard which provides continuous protection from area ‘A’ of the foremost wheel to area ‘B’ of the rearmost wheel may be used. Wheel guards may consist of either permanent body structure or part structure and other components, including mudflaps. The end of a wheel guard including a mudflap (if fitted) need not be less than 230 mm from the ground. Note 17.1. Visibility of Wheel Guards (Mudguards)On every trailer which is 2.2 metres or more in width and which has a body of the tray type, that portion of the external surface of any rear wheel guard, which is visible to the rear, must be white or silver in colour and clearly visible. back to top 18. Visibility of TrayOn every trailer, which is 2.2 metres or more in width and which has a body of the tray type, and is not fitted with a rear marking plate. There must be displayed by painting or otherwise across the full width of the rearmost portion of the tray, a clearly visible white or silver coloured horizontal band having a uniform depth of at least 75mm. back to top 19. Axles and SuspensionsTrailers may have axles at one or two locations. If the trailer has 2 axle groups, the forward most axle group must be steerable by the drawbar. Within a group of axles:
All axles in a group must be interconnected by a load sharing suspension except in a close-coupled axle group (where the two axles in a group have their centres not more than one metre apart, three axles not more than 2 metres apart or four or more axles not more than 3.2 metres apart) provided that the load carrying capacity of each axle in the group and the wheels and tyres fitted to it is:
Load sharing suspensions must be designed so that each axle in a group carries the same load irrespective of the relative movement of the wheels. Caution back to top 20. Wheels and TyresAll wheels and tyres must comply with ADRs 23 or 42, as relevant to the type of tyre used. Wheels and tyres must be adequate for the loads they are to carry and the speeds at which they are to be towed. The GTM of a trailer must not exceed the sum of the load ratings of its tyres. Caution 20.1. Tyre PlacardTrailers with a GTM not exceeding 3.5 tonnes must have a tyre placard made of a durable material affixed to it in a prominent position. This may be affixed to or incorporated in to the vehicle plate referred to in Section 3. Tyres shall not be referred to by name of manufacturer or brand name on the placard. At least the following must be shown:
20.2 Retreaded TyresIf retreaded tyres are fitted to a trailer, the tyres shall comply with the requirements of Australian Standard AS 1973 -1993 ‘Pneumatic tyres—Passenger Car, Light Truck and Truck/bus—Retreading and repair process’ back to top 21 DimensionsAll other trailer configurations and dimensions not specified in this VSB must comply with ADR 43. 21.1 LengthThe length of a trailer, other than a semi-trailer, must not exceed 12.5 metres. For a semi-trailer, the distance from the Point Of Articulation (POA) to the line from which the rear overhang is measured must not exceed 9.5 metres; and
21.2 Rear OverhangDog Trailers Rear overhang must not exceed the lesser of 3.7 metres or 60% of the wheelbase. Semi-trailers Rear overhang must not exceed the lesser of 3.7 metres or 60% of the distance between the point of articulation (POA) and the line from which the rear overhang is measured. Other Trailers Rear overhang must not exceed the lesser of 3.7 metres or the front load space. 21.3 WidthA trailer must not exceed 2.5 metres in overall width. The maximum distance is measured across the body including wheel guards, but excluding signalling devices and side-mounted lamps. 21.4 HeightThe height of any trailer, except for a livestock trailer (See ADRs for definition) must not exceed 4.3 metres in height. 21.5 Ground ClearanceThe ground clearance of a trailer measured from the horizontal road surface of any point on the underside of the trailer except the tyres, wheel and wheel hubs must, when unloaded, be not less than:
Note Observance of permissible vehicle dimensions is critical to road safety. A trailer must meet the dimensional limits in order to take advantage of the arrangements under this bulletin. Otherwise, an approval under sections 10(A) or 16 of the Act must be obtained from the Department of Infrastructure, Transport, Regional Development and Local Government as well as a letter of authority from the relevant registration authority that confirms that the trailer will be permitted to be used on a public road. back to top 22 General Caravans Requirements22.1 DoorsA caravan or trailer equipped with cooking facilities or living or sleeping accommodation must have only outward opening or sliding doors. At least one such door must be located on the left-hand side or at the rear. 22.2 LPG InstallationThe local state or territory registering authority should be consulted for acceptability of LPG installations requirements. In cases where the local state and territory does not mandate a minimum requirement. Then Manufacturers are required to comply with Australian Standard AS 5601-2004 ‘Gas installations’. 22.3 Fire ExtinguisherCaravans must be provided with a fire extinguisher(s) selected and located in accordance with Australian Standards AS1850-1994 – ‘Portable Fire Extinguishers—Classification, Rating and Performance Testing’ or AS 1850 -1997 ‘Portable Fire Extinguishers—Classification, Rating and Performance Testing’ and AS2444-1995—‘Portable Fire Extinguishers and Fire Blankets—Selection and Location’ or Australian Standard AS 2444–2001 ‘Portable fire extinguishers and fire blankets—Selection and location’. Note 22.4 Toilets, Basins and SinksRefer to ADR 42 for more information on the fitment of lavatory closets, urinals, basins and sinks. back to top 23. General Requirements for Trailers23.1 Carriage of PassengersTrailers of any kind must not be designed or used for the carriage of passengers. 23.2 Internal or External ProjectionsNo part of a trailer shall be hazardous to other road users; there must be no unduly sharp edges or projections. Note 23.3 Structural RequirementsThere are no specific body structural requirements, but the trailer must be safe and fit for purpose. Note 23.4 Rear Bumper BarSemi-trailers must have a continuous rear bumper that is not more than 600 mm from the ground when the trailer is unloaded and which provides a force path to the trailer's structural members. Refer to ADR 42/04 clause 8 for further information. back to top 24. Trailers & Caravans Equipped with Refrigeration and Air Conditioning SystemsThe Department of the Environment, Water, Heritage and the Arts has established specific requirements about vehicles equipped with an air conditioner. These vehicles may be subject to the provisions of the Ozone Protection and Synthetic Greenhouses Gas Management Act 1989. Detailed information is available from: Alternatively, you should contact the Department on: Ozone and Synthetic Gas Team Department of the Environment GPO Box 787 CANBERRA ACT 2601 Phone: 02 6274 1373 Email: back to top Next |