The report describes a study in Kenya which measured the rate of loss of airbone fine materials dispersed from the road relative to the speeds and types of vehicle. recent experimental studies in USA and Canada are reviewed of utilising bitumens, chemicals, waste chemicals and local materials for dust-proofing unpaved roads, and a critical appraisal is made of the techniques. The conclusions of the research are taht most of the dust proffing treatments currently availeble vary considerably in their effectiveness and with the exception of the local materials, are usually more expensive than bituminous surface dressing. Where the latter techniques are unavailable, chemical stabilisers can provide an alternative solution