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Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2017. Data Visualization Methods for Transportation Agencies. Washington, DC: The National Academies Press. doi: 10.17226/24755.
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Page ii
Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2017. Data Visualization Methods for Transportation Agencies. Washington, DC: The National Academies Press. doi: 10.17226/24755.
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Page iii
Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2017. Data Visualization Methods for Transportation Agencies. Washington, DC: The National Academies Press. doi: 10.17226/24755.
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Page iv
Suggested Citation:"Front Matter." National Academies of Sciences, Engineering, and Medicine. 2017. Data Visualization Methods for Transportation Agencies. Washington, DC: The National Academies Press. doi: 10.17226/24755.
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AC Thi con Sci CO Aut pub Coo und PH use DIS The Res The KNOWEDGMENT s work was sponsor ducted in the Nation ences, Engineering, PYRIGHT INFORM hors herein are resp lished or copyrighte perative Research erstanding that non MSA, or TDC endor s will give appropria CLAIMER opinions and conc earch Board; the N information contain Data Vis ed by the American al Cooperative High and Medicine. ATION onsible for the auth d material used her Programs (CRP) gr e of the material wil sement of a particul te acknowledgment lusions expressed o ational Academies o ed in this documen NCHR ualizatio Association of State way Research Prog enticity of their mate ein. ants permission to r l be used to imply T ar product, method, of the source of an r implied in this repo f Sciences, Enginee t was taken directly Ca P Web-O n Method Highway and Tran ram (NCHRP), whi rials and for obtaini eproduce material in RB, AASHTO, FAA, or practice. It is exp y reprinted or reprod rt are those of the r ring, and Medicine from the submission Na R Sam Jos mbridge Syste Sc Tak nly Doc s for Tra sportation Officials ( ch is administered b ng written permissio this publication for FHWA, FMCSA, FR ected that those rep uced material. For esearchers who per ; or the program spo of the author(s). Th than Higgins onald Basile uel Van Hecke eph Zissman matics, Inc. - Ca ott Gilkeson oma Park, MD   ument 22 nsporta AASHTO), in coope y the Transportation ns from publishers classroom and not- A, FTA, Office of th roducing the mater other uses of the m formed the research nsors. is material has not mbridge, MA 6: tion Agen ration with the Fede Research Board (T or persons who own for-profit purposes. e Assistant Secreta ial in this document aterial, request perm . They are not nece been edited by TRB cies NCHRP Project 08 Submitte ral Highway Admin RB) of the Nationa the copyright to an Permission is given ry for Research and for educational and ission from CRP. ssarily those of the . -36, Task 128 d August 2016 istration, and was l Academies of y previously with the Technology, not-for-profit Transportation

i Table of Contents Chapter 1 · Introduction and Background ................................................................................................................................................ 1 1.1 · Visualization in Transportation ........................................................................................................................................................... 1 1.2 · Background .................................................................................................................................................................................... 2 1.3 · Audience for the Guide .................................................................................................................................................................... 3 1.4 · Definitions ...................................................................................................................................................................................... 4 1.5 · Outline .......................................................................................................................................................................................... 4 Chapter 2 · How to Illustrate Data .......................................................................................................................................................... 5 2.1 · Common Chart Types ...................................................................................................................................................................... 5 2.2 · Other Recommended Chart Types ................................................................................................................................................... 14 2.3 · Common Techniques ..................................................................................................................................................................... 15 Chapter 3 · Developing Effective Visualizations ....................................................................................................................................... 16 3.1 · Data Wrangling ............................................................................................................................................................................ 16 3.2 · Intent and Audience ....................................................................................................................................................................... 19 3.3 · Analysis ........................................................................................................................................................................................ 21 3.4 · Choosing a Strategy ...................................................................................................................................................................... 24 3.5 · Tools and Implementation .............................................................................................................................................................. 27 3.6 · Putting It All Together ..................................................................................................................................................................... 31 Chapter 4 · Style Guide ...................................................................................................................................................................... 32 4.1 · Basic Design Principles ................................................................................................................................................................... 32 4.2 · Font ............................................................................................................................................................................................. 32 4.3 · Color ........................................................................................................................................................................................... 32 4.4 · Federal Requirements for Style ........................................................................................................................................................ 34 Chapter 5 · Conclusion ...................................................................................................................................................................... 36

ii Appendix A: Best Practice Examples ...................................................................................................................................................... 37 Opening Notes ..................................................................................................................................................................................... 37 Asset Management ................................................................................................................................................................................ 38 Connectivity, Accessibility, and Livability ................................................................................................................................................... 40 Environmental ....................................................................................................................................................................................... 42 Transit ................................................................................................................................................................................................. 45 Highway Mobility .................................................................................................................................................................................. 48 Performance Based Planning .................................................................................................................................................................. 51 Freight ................................................................................................................................................................................................. 54 Safety .................................................................................................................................................................................................. 57 Socioeconomic ..................................................................................................................................................................................... 60 Pedestrian and Bicycle ........................................................................................................................................................................... 63 Appendix B: Matrix of Tools and Chart Types.......................................................................................................................................... 66

iii Figure 1: 3D Model of the Proposed Mobile River Bridge (Alabama DOT)

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TRB's National Cooperative Highway Research Program (NCHRP) Web-Only Document 226: Data Visualization Methods for Transportation Agencies provides techniques for planners who have various levels of experience with displaying and reporting information in a visual format. The publication includes practices for developing visualization skills, enhancing transportation analysis, and improving public engagement.

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