Transport Research Laboratory: - UK research laboratory. Worldwide reputation in most matters concerning roads and transportation. Guide to UK Paving - Comprehensive and illustrated guide to paving, residential and garden drainage, and other hard-landscaping materials and methods commonly used in the United Kingdom. Mincad Systems - Develop CIRCLY for road and highway pavement design and APSDS for airport pavements and other heavy industrial pavements such as intermodal container terminal pavements. Concrete Deterioration and Testing - Comments, observations and opinions concerning concrete durability from a retired Iowa DOT employee in the pavement business for 30 years. Road Design - A student guide to road design from Durham University, United Kingdom . Roads Through the Ages - A Brief History - Subjects include the birth of roads and the first road networks. Provided by Laboratoires des Ponts et Chaussées. Federal Highway Administration - Descriptions of projects that are part of the technology applications program. Includes project status, photographs and resources . Office of Materials and Road Research - Minnesota road research project on pavements, . Texas Department of Transportation - Information resource site.