Notebook 1. Identification of transportation alternatives -- Notebook 2. Social impacts -- Notebook 3. Economic impacts -- Notebook 4. Physical impacts -- Notebook 5. Organization and content of environmental assessment materials -- Notebook 6. Environmental assessment reference book.

An integrated approach is presented for systematically incorporating social, economic, and environmental factors into transportation planning and decision making. The timely identification is stressed of the nature, magnitude, and incidence of these potential factors so that in all phases of transportation planning, alternatives may be developed that avoid or minimize adverse effects and that take full advantage of opportunities to increase benefits. The early, effective, knowledgeable involvement of the public to clarify issues and to aid in the development and evaluation of proposals in emphasized, and the effective use is stressed of expertise and resources both of the transportation agency and of other agencies with maximum flexibility and openess. Objectives for all phases of a transportation planning and design process are listed, a 4-phase study strategy is proposed, and the roles of the transportation professional are reviewed.

The determination of skid resistance requirements for any given set of roadway and traffic conditions is reported. The study focuses on wet pavement skidding accidents at intersections and curves. The feasibility of implementing these procedures was demonstrated in the field. A simplified version of the procedures was also developed. The three steps involved in the procedure for determination of skid resistance requirements are outlined.