Traffic Data Computation Method: Pocket Guide

Federal Highway Administration2018PDFTech ReportUnited States. Federal Highway Administration. Office of Highway Policy InformationUnited States. Federal Highway Administration. Office of Highway Policy InformationUnited StatesData collectionData analysisTraffic dataInformation processingPerformance measurementFHWA-PL-18-027The Federal Highway Administration (FHWA), Office of Highway Policy Information, has developed this "Traffic Data Computation Method Pocket Guide." Traffic data items are performance indicators that are computed from raw and processed traffic information. They are used for operational assessment of transportation facilities, in designing and planning, investment prioritization, and policy decisions. The objective of the pocket guide is to succinctly provide computational methods for selected traffic data items. The audience is anyone involved in the collection, processing, analysis, utilization, and reporting of traffic data. Forty-eight traffic data items are covered in this guide. Individual data items are discussed in a two-page format. For each item, a brief description is first provided. This is followed by discussion and illustration of the data item. In the majority of the discussions, supplemental notes and tips useful for the data item computation are provided. Related data items and cross references are provided for further reading. For traffic data items that require large datasets, Excel-based worked examples are available for download from the FHWA website. Data items with a worked example are identified with this symbol. The data items are alphabetically ordered and the index provides easy access to any data item and key words.119