Document ID: chunk:federal_register_of_legislation:F2024C01065:body:0:p34
Version: federal_register_of_legislation:F2024C01065
Segment Type: other
Provision Reference: 
Character Range: 84782–87544

longitudinal chassis side rails.  For the purposes of this clause a part of the tank shall be considered to be protected by the cab if it is within the boundaries of the cabin when viewed both in plan and side elevation and to be protected by the side rails if it is within the boundaries of the side rails when viewed in plan (ADR 17).

   SIDEWALL - that portion of a tyre between the 'Tread' and the 'Bead'.

   SILENCING SYSTEM - a complete set of components necessary for limiting the noise made by a 'Motor Cycle' and its exhaust (ADR 39).

   SILENCING SYSTEM COMPONENT - one of the individual constituent parts whose assembly constitutes the 'Silencing System'.  These 'Silencing System Components' are, in particular, the exhaust manifold, the exhaust piping, the expansion chamber, the silencer proper, etc.  If the engine intake is equipped with an air filter and the filter's presence is essential to ensure observance of the prescribed sound level limits, the filter must be regarded as a 'Silencing System Component' and bear the markings prescribed in Section 2 of this ADR 39.

   SILENCING SYSTEMS TYPE - 'Silencing Systems' which do not differ in such essential respects as:

    - that their components do not bear different trade names or marks;

    - that the characteristics of the materials constituting a 'Silencing System Component' are not different or that the 'Silencing System Components' do not differ in shape or size;

    - that the operating principles of at least one 'Silencing System Component' are not different; and

    - that their 'Silencing System Components' are not assembled differently (ADR 39).

   SIMULATED TRIP - the first 1,372 seconds of the dynamometer driving schedule.

   SINGLE AXLE - either one 'Axle', or 2 'Axles' with centres between transverse, parallel, vertical planes spaced less than 1.0 m apart.

   SIZE FACTOR - the sum of the 'Section Width' and the outer diameter of a tyre determined on the 'Measuring Rim'.

   SKID LIMIT - a measurement of the distribution of braking at which wheel lock‑up commences.

   SKID PLATE - the plate structure on the 'Semi-trailer' which houses the kingpin and which mounts on to the 'Fifth Wheel Coupling' coupler plate to form the connection between the towing vehicle and the 'Semi-trailer'.

   SLEEPER BERTH - A berth situated in a goods vehicle cab or an adjacent compartment to provide the driver, or one of the drivers if there is more than one driver, with sleeping accommodation.

   SMALL OMNIBUS - an omnibus having an occupant capacity of up to 25 persons, including the driver (ADR 58).

   SMOKE METER - an instrument which determines the smoke density in exhaust gases emitted by 'Engine Systems' (ADR 30).

   SPACER - an annular block used