The permitted vertical load (TWR) of a trailer attached to the vehicle. Also referred to as Tongue Load Rating (TLR) or Vertical Load Rating (VLR) Typical unit code(s): KGM for kilogram, LBR for pound - Note 1: You can indicate additional information in the [name](http://schema.org/name) of the [QuantitativeValue](http://schema.org/QuantitativeValue) node. - Note 2: You may also link to a [QualitativeValue](http://schema.org/QualitativeValue) node that provides additional information using [valueReference](http://schema.org/valueReference). - Note 3: Note that you can use [minValue](http://schema.org/minValue) and [maxValue](http://schema.org/maxValue) to indicate ranges.