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Rights & Permissions Free PDF Access Sign in to download PDF book and chapters Free Resources Display this book on your site! Related Titles NCHRP Synthesis 408: Pavement Marking Warranty Specifications NCHRP Report 500 Volume 17: A Guide for Reducing Work Zone Collisions Other Related Titles NCHRP Synthesis 431: Practices to Manage Traffic Sign Retroreflectivity (2012) National Cooperative Highway Research Program Synthesis Program (NCHRPSYN) Citation Manager Export the bibliographic data for this book in your chosen format Web Search Builder Use this book's key terms to search within this book, across our collection, or across the Web. Skim This Chapter Skim this chapter and use this chapter's key terms to search within this book. Reference Finder Paste in your own text to find books that relate to your topic. Citation Manager Carlson, Paul J, Re, Jonathan M, Transportation Research Board. "Appendix C - Survey Participants." NCHRP Synthesis 431: Practices to Manage Traffic Sign Retroreflectivity. Washington, DC: The National Academies Press, 2012. Please select a format: Page 40   E-mail Share on facebook Facebook Share on delicious Delicious Share on stumbleupon Stumble Share on twitter Twitter More Sharing ServicesMore Page 40 Front Matter (R1-R9) Summary (1-2) Background (3-3) Study Approach (4-5) Sign Retroreflectivity Maintenance Methods (6-11) Sign Service Life (12-13) Visual Nighttime Inspection (14-15) Measured Retroreflectivity (16-16) Expected Sign Life (17-17) Control Signs (18-18) Sign Inventories (19-21) Clifton Park, New York (22-22) St. Louis County, Minnesota (23-23) Phoenix, Arizona (24-24) Missouri Department of Transportation (25-26) Visual Nighttime Inspection (27-27) Control Signs (28-28) Chapter Six - Research in Progress and Research Needs (29-29) Chapter Seven - Conclusions (30-30) References (31-31) Appendix A - Minimum Maintained Retroreflectivity Levels Resources (32-37) Appendix B - Telephone Survey (38-39) Appendix C - Survey Participants (40-42) Appendix D - Myths and Other Frequently Asked Questions (43-45)

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40 Appendix C Survey Participants Table C1 List of State Survey Participants Total Estimated Primary Contact Agencies Population Area Centerline Method Number (sft2) Miles Nighttime Alabama DOT 4,780,000 51,000 11,800 334-242-6275 Inspection Blanket Colorado DOT 5,030,000 104,000 9,100 303-757-9280 Replacement Nighttime Florida DOT 18,800,000 54,000 12,000 850-410-5600 Inspection Nighttime Idaho TD 1,570,000 83,000 5,000 208-334-4458 Inspection Blanket Illinois DOT 12,830,000 56,000 16,000 217-782-7820 Replacement Blanket Indiana DOT 6,480,000 36,000 11,000 317-233-4688 Replacement Blanket Kansas DOT 2,850,000 82,000 10,000 785-296-3756 Replacement Blanket Michigan DOT 9,880,000 57,000 9,600 517-373-2625 Replacement Nighttime Missouri DOT 5,990,000 69,000 32,000 573-751-2551 Inspection Nighttime New Hampshire DOT 1,320,000 9,000 4,100 603-271-2291 Inspection Expected Sign New Jersey DOT 8,790,000 7,000 2,400 732-697-7360 Life Nighttime North Carolina DOT 9,540,000 49,000 80,000 919-773-2800 Inspection Expected Sign Pennsylvania DOT 12,700,000 45,000 39,900 717-787-3620 Life Nighttime Texas DOT 25,150,000 262,000 80,000 512-416-3134 Inspection Expected Sign Vermont AOT 630,000 9,000 3,000 802-828-2651 Life Expected Sign Wisconsin DOT 5,690,000 54,000 13,000 414-227-2166 Life

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41 Table C1 (continued) Total Estimated Primary Contact Agencies Area Type Population Area Centerline Method Number (sft2) Miles Town of Clifton Park, Expected Rural 33,000 50 200 518-371-6651 NY Sign Life Expected Town of Manchester, CT Rural 58,000 30 210 860-647-3152 Sign Life Expected City of Austin, TX Urban 790,000 300 2,400 512-974-1551 Sign Life City of College Station, Nighttime Urban/Rural 94,000 40 600 979-764-3690 TX Inspection Nighttime City of Lakeland, FL Urban 94,000 70 350 863-834-6001 Inspection Expected City of Norfolk, VA Urban 242,000 100 2,000 757-664-7300 Sign Life Expected City of Palm Bay Urban 100,000 70 N/A 321-952-3437 Sign Life City of Philadelphia, PA Control Signs Urban 1,526,000 140 2,200 215-686-5560 Expected City of Phoenix, AZ Urban 1,445,000 520 5,500 602-262-4659 Sign Life Golden Gate Bridge Measured Urban N/A N/A 6 415-455-2000 Hwy. & Trans. District Retro. Nighttime Barton County, KS Rural 27,000 900 400 620-793-1800 Inspection Nighttime Brevard County, FL Urban/Rural 543,000 1,560 1,140 321-255-4313 Inspection Measured Charlotte County, FL Urban/Rural 159,000 860 2,600 941-575-3600 Retro. Expected Hancock County, IN Rural 70,000 310 670 706-444-5746 Sign Life Nighttime Hillsborough County, FL Urban 1,229,000 1,300 3,200 813-635-5400 Inspection Nighttime Kent County, MI Urban/Rural 602,000 870 1,900 616-336-3694 Inspection Blanket Mercer County, NJ Urban/Rural 366,000 230 180 609-989-6600 Replacement Expected Mercer County, OH Rural 40,000 470 790 419-586-7759 Sign Life Blanket Montgomery County, OH Urban/Rural 559,000 460 320 937-225-6040 Replacement Expected Orange County, CA Urban 3,010,000 950 310 714-955-0200 Sign Life (continued on next page)

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42 Table C1 (continued) Total Estimated Primary Contact Agencies Area Type Population Area Centerline Method Number (sft2) Miles Pierce County, WA Control Signs Urban/Rural 795,000 1,800 1,800 253-798-7253 Blanket St. Louis County, MN Rural 200,000 6,900 3,000 218-625-3830 Replacement Expected Tippecanoe County, IN Urban/Rural 172,000 500 850 765-423-9210 Sign Life Expected Yolo County, CA Rural 200,000 1,000 760 530-666-8775 Sign Life Table C2 List of Other Survey Participants Agencies Type Contact Number Cornell Local Roads LTAP Center 607-255-8033 Program Consulting Engineering DLZ Indiana LLC 574-236-4400 Firm Consulting Engineering Gannett Fleming, Inc. 717-763-7211 Firm Michigan LTAP LTAP Center 906-487-2102 Mn/DOT Research Services State Research 651-366-3680 Section Department PennDOT LTAP LTAP Center 1-800-FOR-LTAP Professional Pavement Product Vendor 888-717-7771 Products, Inc. Indiana LTAP LTAP Center 765-494-2164