Refrigerated body of a road vehicle for freight transport, comprising an interior loading space and a refrigerating machine for controlling the temperature inside the loading space, characterized in that it also comprises a system for estimating the temperature of freight stored or intended to be stored inside said loading space, comprising: - at least one temperature sensor that is able to output temperature signals representative of the temperature of the air inside the loading space, - an electronic processing unit comprising memory storage means for saving at least one law of evolution of the temperature of freight as a function of the temperature of the air measured inside the loading space, this law including at least one adjustable parameter, the value of which is specific to each type of freight, - display means that display a predefined list of freight stored or intended to be stored, comprising a first predefined sub-list of the type of products stored or intended to be stored and a second predefined sub-list of the type of packaging, and - selection means for selecting, from the freight stored or intended to be stored and listed on said list displayed by the display means, at least one type of freight defined by the selection of a type of product and a type of packaging, the temperature of which is intended to be estimated, - said electronic processing unit also comprising: - attribution means for attributing to said parameter of said law of evolution a predefined value specific to each type of freight selected, and - calculation means that are able to calculate, for each type of freight selected, a temperature estimated from the temperature signals and from said law of evolution of the temperature including said attributed specific value. - at least one temperature sensor that is able to output temperature signals representative of the temperature of the air inside the loading space, - an electronic processing unit comprising memory storage means for saving at least one law of evolution of the temperature of freight as a function of the temperature of the air measured inside the loading space, this law including at least one adjustable parameter, the value of which is specific to each type of freight, - display means that display a predefined list of freight stored or intended to be stored, comprising a first predefined sub-list of the type of products stored or intended to be stored and a second predefined sub-list of the type of packaging, and - selection means for selecting, from the freight stored or intended to be stored and listed on said list displayed by the display means, at least one type of freight defined by the selection of a type of product and a type of packaging, the temperature of which is intended to be estimated, - said electronic processing unit also comprising: - attribution means for attributing to said parameter of said law of evolution a predefined value specific to each type of freight selected, and - calculation means that are able to calculate, for each type of freight selected, a temperature estimated from the temperature signals and from said law of evolution of the temperature including said attributed specific value. - attribution means for attributing to said parameter of said law of evolution a predefined value specific to each type of freight selected, and - calculation means that are able to calculate, for each type of freight selected, a temperature estimated from the temperature signals and from said law of evolution of the temperature including said attributed specific value.