Poster 21-11

UPDATING LANE DISTRIBUTION FACTORS FOR PAVEMENT DESIGN

PI: Jidong J. Yang

Co-PI(s): Sonny Kim, and Mi Geum Chorzepa

Institution(s): University of Georgia

Abstract

The Lane Distribution Factor (LDF) is a critical input in pavement design. The LDF values can be outdated due to many reasons, such as population and economic growth, demographic and travel behavior changes, technology adoption, among others. Using the outdated LDFs could potentially result in over or under-design of pavement structure. Thus, the LDF values require timely update to reflect true truck traffic distribution across lanes. In this study, a hierarchical model is developed using the latest statewide traffic data to estimate the LDF values and update LDF design tables.

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