Document ID: chunk:federal_register_of_legislation:F2023C00959:body:0:p19
Version: federal_register_of_legislation:F2023C00959
Segment Type: other
Provision Reference: 
Character Range: 56843–59981

is the width of the wheel track of the rear 'Axle'

       W is the 'Wheelbase'

       4.2.                           For category LEM2, LEP2 and LEG2 vehicles, the horizontal distance (d) from the 'CoM' to the nearest 'roll axis' shall be calculated from the formula shown below:
       where:

          W is the 'Wheelbase'

          L is the longitudinal location of the 'CoM' from the centreline of the front 'Axle'

       t is the width of the wheel track of the front 'Axle'

       5.                                 Calculation of the 'Static Stability Ratio'
       5.1.                           The 'Static Stability Ratio' shall be calculated as follows:

       'Static Stability Ratio' = h/d

       where:

       h is the height (h) of the 'CoM'

       d is the horizontal distance from the 'CoM' to the nearest 'roll axis'

       5.2.                           The test report must take account of known and potential inaccuracies in measurement equipment, especially where the 'Static Stability Ratio' nears the compliance limit.
       5.2.1.                    For the Stable Pendulum Method, the test facility must be able to accurately measure the angle (θ) between the reference line and the horizontal.
       5.2.2.                    For the Axle Lift Method, the test facility must be able to accurately measure the height of elevation of the single-wheel axle, and accurately measure the 'Axle Load' (or axle weight) of the two-wheel axle.

Compilation NOTES
This compilation of Vehicle Standard (Australian Design Rule 42/05 – General Safety Requirements) 2018 includes all the instruments set out in the Table of Instruments.  The Table of Amendments provides a history of clauses that have been amended, inserted or deleted. This vehicle standard is determined under section 12 of the Road Vehicle Standards Act 2018.

Table of Instruments
Name of Instrument                                                                  Registration Date  Commencement Date
Vehicle Standard (Australian Design Rule 42/05 – General Safety Requirements) 2018  31/10/2018         01/11/2018
Vehicle Standard (Australian Design Rule) Amendment Instrument 2023 (No.1)          01/11/23           02/11/23

Table of Amendments
Clause affected  How affected  Amending instrument
1.2.             del           Legislation Act 2003 – Section 48D
1.2.1.           del           Legislation Act 2003 – Section 48D
23.2.2           ad            Vehicle Standard (Australian Design Rule) Amendment Instrument 2023 (No.1)

   ad = added or inserted
   am = amended
   del = deleted or removed
   rr = removed and replaced
    = clause renumbered.  This takes the format of old no.  new no.
* The category code may also be in the format L1, L2, L3 etc
[**] See clause 3.1.
[1] SA means Standards Australia; SAE means the Society of Automotive Engineers or SAE International; BS means British Standard; JIS means Japanese Industrial Standard; DIN means Deutsches Institut für Normung (German national Organization for Standardization), ISO means International Organization for Standardization and UN means United Nations.