This report summarises the current state of the art regarding the collection of road condition and road/vehicle interaction data, providing an overview of current practice and emerging technologies. Technologies in the development and experimental stages are generally not discussed. The document is intended to concisely inform the reader of the range of technologies available, and not to replicate the considerable detail that is available elsewhere for specific technologies. Each of the commonly measured road condition and road/vehicle interaction data parameters is discussed, providing a definition of each of these parameters, a description of the common measurement methods and a description of the condition/interaction indicators that are derived from the measured data. The need for robust quality management in the collection of road condition data is highlighted, and guidance provided. (Author/publisher)
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