Document ID: chunk:federal_register_of_legislation:F2024C01065:body:0:p39
Version: federal_register_of_legislation:F2024C01065
Segment Type: other
Provision Reference: 
Character Range: 97276–99974

the towing vehicle.

   TOTAL LENGTH - the longitudinal distance between the 'Front End' and the 'Rear End' of a vehicle.

   TOTAL TRAILER AXLE LOAD (TTAL) - the total force exerted by the individual axles attached to the trailer when resting on a horizontal supporting plane.

   TOTALLY VISIBLE - means that the sum of the view from each of the 2 eyes includes all the 'Visual Indicators'.

   TOW COUPLING OVERHANG - the horizontal distance from the centre of the rearmost 'Axle Group', or the centre line of the single axle, to the pivot point of the coupling near the rear of the vehicle.

   TOW TRUCK – a goods vehicle equipped with a 'Crane' used or intended to be used for the lifting and carrying or towing of vehicles and includes any goods vehicle to which is attached (temporarily or otherwise) a device or trailer which is used or intended to be used for the lifting and carrying of vehicles (ADR 44).

   TOWBAR - a device attached to the drawing vehicle provided for connection of the drawing vehicle to the 'Coupling' for the towing of a trailer.

   TRAILER GROSS AXLE LOAD RATING (TGALR) - the sum of the 'GALR' of each 'Axle' attached to the trailer.

   TRANSVERSE DISTANCE S - the shortest transverse distance in mm from the 'Seating Reference Plane' to the point under consideration.

   TREAD - the portion of the tyre which comes in contact with the road.

   TREAD SEPARATION - pulling away of the 'Tread' from the tyre 'Carcass'.

   TREADWEAR INDICATOR - an indicator incorporated into the 'Tread' of a tyre which gives a visual indication when the 'Tread' has worn down to leave a pre-determined minimum 'Groove' depth.

   TRIAXLE GROUP - a combination of 3 'Axles' in which the front and rear 'Axles' are not less than 2.0 m and not more than 3.2 m apart.

   T-TYPE TEMPORARY-USE SPARE TYRE - means a type of pneumatic 'Temporary-Use Spare Tyre' designed for use at inflation pressures higher than those established for normal use tyres.

   TURNTABLE - a coupling device used between a 'Semi-trailer' and a 'Prime Mover', which may not be readily detachable. It includes the upper and lower rotating elements and the king pin.  A turntable is also used as a base for a 'Fifth Wheel', in which case the 'Semi-trailer' is readily detachable.

TWIN STEER AXLE GROUP - a group of two 'Axles':

 1.                 with single tyres; and
 2.                fitted to a motor vehicle; and
 3.                 connected to the same steering mechanism; and
 4.                the horizontal distance between the centrelines of which is at least 1.0 metre, but not more than 2.5 metres.

   TWINNED WHEELS - means two 'Wheels' mounted on the same axle, the distance between