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Suggested Citation:"Glossary." National Academies of Sciences, Engineering, and Medicine. 2022. Visualization of Highway Performance Measures. Washington, DC: The National Academies Press. doi: 10.17226/26651.
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Page 91

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91   Chart—Simple: Bar, line, pie, table. Chart—Complex: Heat map, candlestick, chord, spiral, and Sankey. 508 Compliance: A law requiring federal government websites to be safe and acces- sible for people with disabilities. Dashboard: An online visualization of measures accessible from a web browser. Geospatial Representations (maps): An image showing physical features, cities, or roads. Infographic: A collection of imagery, charts, and minimal text that gives an easy-to-understand overview of a topic. Interactive Visualization: An online visualization of multiple performance measures acces- sible from a web page that allow users to customize the view of data. Interactive Map Visualization: An information management tool that shows maps that display data and allows users to customize the view of the data or identify data for specific locations. PM1 Performance Measure Rule 1: (Safety) https://www.fhwa.dot.gov/tpm/, https://www.fhwa.dot. gov/tpm/guidance/safety_performance.pdf. PM2 Performance Measure Rule 2: (Pavement and Bridge Condition) https://www.fhwa.dot.gov/ tpm/guidance/hif18022.pdf. PM3 Performance Measure Rule 3: (System Performance, Freight, and CMAQ) https://www.fhwa. dot.gov/tpm/guidance/hif18040.pdf. Performance Measure: The use of statistical evidence to determine progress toward specific defined organizational objectives. Performance Story: The arrangement of all a DOT does to improve performance into a narrative using classic story elements. Publication: A pdf, book, flyer, or poster. Story Map: A strategy that uses a map/graphical organization to help com- municate a series of visualizations and text descriptions. Video: Moving visual images. Visualization: A chart or other image created as a visual representation of an object, situation, or set of information. Glossary

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Visualizations are tools for analyzing, reporting, and communicating the complexities of a transportation system and for synthesizing these intricacies into presentations that can be easily understood.

The TRB National Cooperative Highway Research Program's NCHRP Synthesis 584: Visualization of Highway Performance Measures documents current practices and methods used by state departments of transportation (DOTs) for visualizing highway performance measures and their use of visualization techniques for communication and decision support.

Supplemental to the publication is a Presentation of Visualization Examples.

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