(continued from TRIS 349142.) Section 4 contains the following papers: The Importance of Strength Criteria in Selecting Some Residual Gravels for Pavement Construction (Gidigasu, MD and Dogbey, JLK); Soil Compaction at Low Moisture Content--Field Trials in Sudan (Ellis, CI); Compaction for Collapsing Sand Roadbeds (Weston, DJ); Simulation of Salt Damage to Roads with Laboratory Model Experiments (Netterberg, F and Loudon, PA); Geotechnical Evaluation of Natural and Treated Black Cotton Clay for Possible Use for Low Cost Pavements (Gidigasu, MD and Appeagyei, E); Measuring the Performance of; Interpretation of Deflection Measurements on Poor Roads (Larbi Yeboa, S); An Operational Management Aid for Low Cost Road Maintenance (Freer-Hewish, RJ); An Appropriate Serviceability Rating Method for Low Cost Paved Roads (Snaith, MS). (continued on TRIS 349144.)