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Figure 6H-4 Long Description - MUTCD 2009 Edition - FHWA
New minimum maintained retroreflectivity levels for traffic signs (FHWA
Manual on Uniform Traffic Control Devices for Streets and Highways - 2009 Edition with 2012 Revisions: Department of Transportaton, U S, Federal Highway Administration: 9781937299088: : Books
FHWA Announces Rule Improving Nighttime Visibility with Retroreflective Pavement Marking
road marking for automated vehicles
Manual on Uniform Traffic Control Devices - Wikipedia
An Advocate's Guide to Commenting on the Draft MUTCD, Part I - Kostelec Planning
Railroad-Highway Grade Crossing Handbook - Institute of