A study in Kenya has shown the difficulties of using roadside interviews for establishing trip relationships, but has a suitable sampling frame could be constructed by a direct survey of vehicle owners. The vehicle owner in the broadest sense would then become the fundamental unit for trip studies. The report suggests that home and workplace questionnair surveys, focusing on the vehicle owner, may be suitable for the extensive sampling necessary to evolve standards for studies of rural trip characteristics. Definition of employment suitable for land use/transport studies in developing countries are suggested in the report.