@BOOK{NAP13717, author = "Transportation Research Board and National Academies of Sciences, Engineering, and Medicine", title = "Equipment for Collecting Traffic Load Data", doi = "10.17226/13717", abstract = "TRB\u2019s National Cooperative Highway Research Program (NCHRP) Report 509: Equipment for Collecting Traffic Load Data identifies the key issues that should be considered by state and other highway operating agencies in selecting traffic equipment for collecting the truck volumes and load spectra needed for analysis and design of pavement structures.", url = "https://nap.nationalacademies.org/catalog/13717/equipment-for-collecting-traffic-load-data", year = 2004, publisher = "The National Academies Press", address = "Washington, DC" }