Motorcycle transport CHAPTER TWO. LITERATURE REVIEW. 2.1 Introduction. This chapter gives literature related to the historical background of the study. It gives literature based on the historical perspectives of motorcycle transport, the extent to which training, drug/substance abuse, road conditions, and how institutional constraints influences high accident rates among the motorcycle operators and also presents a theoretical framework and conceptual framework of the study. 2.2 The Concept of Motorcycle Accidents. In recent years, there has been a growing concern with the significant increase in accidents involving motorcycles in several countries. Despite the use of motorcycles as a major means of transport in some countries, they constitute a means of transport that is considered to be highly risky (Nunn, 2011). This