The influence of traffic volume on wheel path distribution and its relationship with pavement design.

Ethiopian traffic is increasing and changing at an alarming rate. This necessitates the design of roads that are both economical and safe. In today's world, flexible pavement roads are widely used, but surface failure occurs before the design period. The study's main objective is to investigate a DTLF for the road project that was not addressed during design. These include the effect of traffic volume on heavy vehicle wheel path distribution across a carriageway width, the effect of lane markings on heavy vehicle wheel path distribution across a rural two-lane road pavement design, and the development of a design traffic loading factor (DTLF). Prevalent soil and material conditions are used to design flexible pavement in Ethiopia. The results are compared to AASHTO Structural Design Pavement manual. Finally, both design guides' thicknesses were compared. The ERA high volume design manual recommends a one-directional traffic load for pavement structures on two-lane rural roads. [ABSTRACT FROM AUTHOR]