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IMS Infrastructure Management Services Arden Hills Report P a g e | 5 <br />3.2 PAVEMENT CONDITION SURVEY <br />A specialized piece of survey equipment – referred to as the Laser Road Surface Tester (RST) – was used <br />to collect observations on the condition of the pavement surface, as well as to collect high -definition digital <br />imagery and spatial coordinate information. The RST is equipped with the second edition of 3D Laser Crack <br />Measurement System (LCMS-2) and provides a continuous scan of a 13-ft wide lane as shown in Figure <br />5. All collectors were driven in two directions and local roads were driven in one direction to provide a <br />representative sample of pavement conditions. <br /> <br />Figure 5 - RST Equipped with the 3D LCMS-2 Camera <br />The data captured by the RST was analyzed to identify and classify pavement defects and determine <br />pavement condition indices following ASTM D6433 protocols. These following provides a description of <br />major distress types identified in the network. <br /> <br /> <br /> <br /> <br /> <br /> <br />