Specifications include, but are not limited to: DATA COLLECTION REQUIREMENTS • Contractor shall drive and collect roadway curve data for the full extent of all routes and ramps as provided in Appendix A • Contractor shall use Rieker’s Curve Advisory Services (CARS) (See Appendix B) • Contractor shall measure location by: o Spatial Measurement o Progressive Linear Measurement • Contractor shall collect/record data continuously along the whole corridor • Contractor shall collect roadway data every 25 ft. • Contractor shall collect horizontal curve data for all curves on a roadway • Contractor shall drive each route a minimum of two (2) passes in each direction to determine the recommended advisory speed • Contractor shall use Projection EPSG2273 (State Plane Coordinate System 1983 meters – zone 3900 South Carolina) Geodetic Datum North American 1983 (reference ellipsoid GRS80; vertical datum Earth Gravitational Model (EGM96), vertical datum reference Geoid orthometric).