Colorado. Division of Highways

This set of guidelines generally follows current practice in the Division for obtaining soil profiles and is intended to establish standardized procedures for use by the District Materials Sections in the performance of uniform and adequate soils investigations. It is not design manual. The recommendations presented herein are oriented toward the solution of such problems as pavement design, slope design, slope appearance, cost, landslides, embankment...

For many years the Colorado Division of Highways has been testing and evaluating different types of paint, glass beads, or other types of traffic marking materials as they come on the market.