Document ID: chunk:federal_register_of_legislation:F2016C00561:clause:1_10:p1
Version: federal_register_of_legislation:F2016C00561
Segment Type: clause
Provision Reference: sch 1 cl 10 (pt 1/4)
Character Range: 15504–18154

10  Indemnity
 (1) No civil liability is incurred by the accrediting agency or any person engaged in the administration of this legislation for an honest act or omission in the exercise or discharge, or purported exercise or discharge, of a power, function or duty under this legislation.
 (2) A liability that would, but for subsection (1), lie against the person lies instead against the Crown.

Schedule—Performance standard for road‑friendly suspension
  A suspension system is road‑friendly for the purpose of this legislation if it has the performance and component requirements specified in this Schedule.
  Performance requirements
  During free transient low frequency vertical oscillation of the sprung mass above an axle or axle group, the measured frequency and damping with the suspension carrying its maximum legal load must fall within the following limits:
 (a) the frequency of the sprung mass above the axle or axle group in a free transient vertical oscillation must not be higher than 2.0 Hz;
 (b) the mean damping ratio must be more than 20% of critical damping (Co) for the suspension in its normal operating condition;
 (c) the damping ratio of the suspension with all dampers (if fitted) removed or incapacitated must be not more than 50% of the mean damping ratio;
 (d) in the case of multiple axle groups the static load share between axles in the group must be within 5%.
  Components
  Dual tyres must be fitted on the axles except in the case of a six tyred tandem axle group where one axle in the group may have single tyres fitted.
  Definitions for the purpose of this Schedule
load‑share, in respect of a suspension system on a multi axle group, means a suspension system that:
 (a) is built to divide the load between the tyres on the group so that no tyre carries a mass more than 5% greater than the mass it would carry if the load were divided equally; and
 (b) has effective damping characteristics on all axles of the group.
frequency and damping:
In this definition a sprung mass "M (kg)" above a driving axle or bogie is considered.
The axle or bogie has a total vertical stiffness between the road surface and the sprung mass of K Newtons/metre (N/m) and a total damping coefficient of C Newtons per metre per second (N.s/m).
The vertical displacement of the sprung mass is Z.
The equation of motion for free oscillation of the sprung mass is:
The frequency of oscillation of the sprung mass F (rad/sec) is:
The damping is critical when C = Co
where:
The damping ratio as a fraction of critical damping is C/Co.
During free transient oscillation of the sprung mass the vertical motion of the mass will follow