Pavement data collection is part of the asset management for the roadways within Davidson County. The data collected is then extracted and used to determine roadway conditions. A qualified Contractor will be asked to capture pavement distresses such as fatigue cracking, longitudinal cracking, transverse cracking, and raveling, etc., as well as roughness data and digital images showing forward, downward and side view of pavement. The firm must also have a thorough knowledge of Cartegraph/Opengov's Operations Management System (OMS) which is the pavement management system being used by Nashville Department of Transportation and Multimodal Infrastructure (NDOT) to manage Metro's roadway infrastructure. The successful Contractor will work with Metro's Contractor under a separate contract for the Right-of-Way (ROW) Viewer. Imaging * High Resolution 360-degree images with Street View and provide the software to view and navigate through panoramic street level images. * Capability, at a minimum, to provide guardrail, curb and gutter, curb ramp, bikeway, sidewalk, traffic signs, and pavement markings assets inventory in delivered in ESRI-compatible format if necessary. * Images should be in an industry standard format such as JPEG. Imagery that requires browser plugin or special software to view should not be used. Images should not be encrypted in any way. * Images should be geo-referenced to within 1 meter (latitude, longitude, and elevation). * The geo-referencing system should use an inertial navigation system or its equivalent to collect georeferenced data in the event that the GPS signals are lost for a short period. * A minimum of four camera angles are required: Downward, forward, left shoulder, and right shoulder. A three-camera configuration is acceptable if a road is surveyed in both directions and both shoulders are filmed during data acquisition. * Forward images should be collected in 20-foot intervals using a minimum of 2584 x 1942 pixels at posted speed limits. * Shoulder images should be collected in 20-foot intervals using a minimum of 1920 x 1080 pixels at posted speed limits. * Downward images should be 2000 pixels per scan line at prevailing posted speed limits. * The downward camera should have adequate resolution to visually identify cracks with a minimum width of 2-mm. * Downward camera images should be lit with an auxiliary light source (i.e. light bar). * Image information (segment, geo-reference, etc.) should be provided in the format provided in the attached database...
