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Supporting Material to NCHRP Report 674 (2011)

Chapter: Appendix F: Details on PHB Installation

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Suggested Citation:"Appendix F: Details on PHB Installation." National Academies of Sciences, Engineering, and Medicine. 2011. Supporting Material to NCHRP Report 674. Washington, DC: The National Academies Press. doi: 10.17226/22900.
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Suggested Citation:"Appendix F: Details on PHB Installation." National Academies of Sciences, Engineering, and Medicine. 2011. Supporting Material to NCHRP Report 674. Washington, DC: The National Academies Press. doi: 10.17226/22900.
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Suggested Citation:"Appendix F: Details on PHB Installation." National Academies of Sciences, Engineering, and Medicine. 2011. Supporting Material to NCHRP Report 674. Washington, DC: The National Academies Press. doi: 10.17226/22900.
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Suggested Citation:"Appendix F: Details on PHB Installation." National Academies of Sciences, Engineering, and Medicine. 2011. Supporting Material to NCHRP Report 674. Washington, DC: The National Academies Press. doi: 10.17226/22900.
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Suggested Citation:"Appendix F: Details on PHB Installation." National Academies of Sciences, Engineering, and Medicine. 2011. Supporting Material to NCHRP Report 674. Washington, DC: The National Academies Press. doi: 10.17226/22900.
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Suggested Citation:"Appendix F: Details on PHB Installation." National Academies of Sciences, Engineering, and Medicine. 2011. Supporting Material to NCHRP Report 674. Washington, DC: The National Academies Press. doi: 10.17226/22900.
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Suggested Citation:"Appendix F: Details on PHB Installation." National Academies of Sciences, Engineering, and Medicine. 2011. Supporting Material to NCHRP Report 674. Washington, DC: The National Academies Press. doi: 10.17226/22900.
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Suggested Citation:"Appendix F: Details on PHB Installation." National Academies of Sciences, Engineering, and Medicine. 2011. Supporting Material to NCHRP Report 674. Washington, DC: The National Academies Press. doi: 10.17226/22900.
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Suggested Citation:"Appendix F: Details on PHB Installation." National Academies of Sciences, Engineering, and Medicine. 2011. Supporting Material to NCHRP Report 674. Washington, DC: The National Academies Press. doi: 10.17226/22900.
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Suggested Citation:"Appendix F: Details on PHB Installation." National Academies of Sciences, Engineering, and Medicine. 2011. Supporting Material to NCHRP Report 674. Washington, DC: The National Academies Press. doi: 10.17226/22900.
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Suggested Citation:"Appendix F: Details on PHB Installation." National Academies of Sciences, Engineering, and Medicine. 2011. Supporting Material to NCHRP Report 674. Washington, DC: The National Academies Press. doi: 10.17226/22900.
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Suggested Citation:"Appendix F: Details on PHB Installation." National Academies of Sciences, Engineering, and Medicine. 2011. Supporting Material to NCHRP Report 674. Washington, DC: The National Academies Press. doi: 10.17226/22900.
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Suggested Citation:"Appendix F: Details on PHB Installation." National Academies of Sciences, Engineering, and Medicine. 2011. Supporting Material to NCHRP Report 674. Washington, DC: The National Academies Press. doi: 10.17226/22900.
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Suggested Citation:"Appendix F: Details on PHB Installation." National Academies of Sciences, Engineering, and Medicine. 2011. Supporting Material to NCHRP Report 674. Washington, DC: The National Academies Press. doi: 10.17226/22900.
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Suggested Citation:"Appendix F: Details on PHB Installation." National Academies of Sciences, Engineering, and Medicine. 2011. Supporting Material to NCHRP Report 674. Washington, DC: The National Academies Press. doi: 10.17226/22900.
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Suggested Citation:"Appendix F: Details on PHB Installation." National Academies of Sciences, Engineering, and Medicine. 2011. Supporting Material to NCHRP Report 674. Washington, DC: The National Academies Press. doi: 10.17226/22900.
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Suggested Citation:"Appendix F: Details on PHB Installation." National Academies of Sciences, Engineering, and Medicine. 2011. Supporting Material to NCHRP Report 674. Washington, DC: The National Academies Press. doi: 10.17226/22900.
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Suggested Citation:"Appendix F: Details on PHB Installation." National Academies of Sciences, Engineering, and Medicine. 2011. Supporting Material to NCHRP Report 674. Washington, DC: The National Academies Press. doi: 10.17226/22900.
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Suggested Citation:"Appendix F: Details on PHB Installation." National Academies of Sciences, Engineering, and Medicine. 2011. Supporting Material to NCHRP Report 674. Washington, DC: The National Academies Press. doi: 10.17226/22900.
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Suggested Citation:"Appendix F: Details on PHB Installation." National Academies of Sciences, Engineering, and Medicine. 2011. Supporting Material to NCHRP Report 674. Washington, DC: The National Academies Press. doi: 10.17226/22900.
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Suggested Citation:"Appendix F: Details on PHB Installation." National Academies of Sciences, Engineering, and Medicine. 2011. Supporting Material to NCHRP Report 674. Washington, DC: The National Academies Press. doi: 10.17226/22900.
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Suggested Citation:"Appendix F: Details on PHB Installation." National Academies of Sciences, Engineering, and Medicine. 2011. Supporting Material to NCHRP Report 674. Washington, DC: The National Academies Press. doi: 10.17226/22900.
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Suggested Citation:"Appendix F: Details on PHB Installation." National Academies of Sciences, Engineering, and Medicine. 2011. Supporting Material to NCHRP Report 674. Washington, DC: The National Academies Press. doi: 10.17226/22900.
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Suggested Citation:"Appendix F: Details on PHB Installation." National Academies of Sciences, Engineering, and Medicine. 2011. Supporting Material to NCHRP Report 674. Washington, DC: The National Academies Press. doi: 10.17226/22900.
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Suggested Citation:"Appendix F: Details on PHB Installation." National Academies of Sciences, Engineering, and Medicine. 2011. Supporting Material to NCHRP Report 674. Washington, DC: The National Academies Press. doi: 10.17226/22900.
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Suggested Citation:"Appendix F: Details on PHB Installation." National Academies of Sciences, Engineering, and Medicine. 2011. Supporting Material to NCHRP Report 674. Washington, DC: The National Academies Press. doi: 10.17226/22900.
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Suggested Citation:"Appendix F: Details on PHB Installation." National Academies of Sciences, Engineering, and Medicine. 2011. Supporting Material to NCHRP Report 674. Washington, DC: The National Academies Press. doi: 10.17226/22900.
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Suggested Citation:"Appendix F: Details on PHB Installation." National Academies of Sciences, Engineering, and Medicine. 2011. Supporting Material to NCHRP Report 674. Washington, DC: The National Academies Press. doi: 10.17226/22900.
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Suggested Citation:"Appendix F: Details on PHB Installation." National Academies of Sciences, Engineering, and Medicine. 2011. Supporting Material to NCHRP Report 674. Washington, DC: The National Academies Press. doi: 10.17226/22900.
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Suggested Citation:"Appendix F: Details on PHB Installation." National Academies of Sciences, Engineering, and Medicine. 2011. Supporting Material to NCHRP Report 674. Washington, DC: The National Academies Press. doi: 10.17226/22900.
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APPENDIX F: Details on Pedestrian Hybrid Beacon (PHB) Installation This Appendix contains details on the installation of the pedestrian hybrid beacon treatment at the two-lane roundabout in Golden, CO. The appendix is presented in three parts: Part 1: Request for Experimentation Submittal to FHWA Part 2: 170 Controller and Cabinet Configuration Part 3: Preliminary Cost Estimates 85

Request for Experimentation Submittal to FHWA 86

     MEMORANDUM   Date: June 30, 2008  Project #: 6317  To: Vince Auriemma  City of Golden, Colorado  From: Lee A. Rodegerdts, P.E.  Project: NCHRP  3‐78:  Crossing  Solutions  for  Pedestrians  with  Vision  Impairments  at  Roundabouts and Channelized Turn Lanes  Subject: Request for Experimentation for Pedestrian Hybrid Signal/Beacon    This  memorandum  describes  the  proposed  pedestrian  hybrid  signal/beacon  proposed  for  the  northwest crosswalk at the multilane roundabout at South Golden Road/Johnson Rd. in Golden,  Colorado.  This  documentation  is  being  prepared  to  support  an  official  Request  for  Experiementation  as  required  by  FHWA  for  new  application  of  a  traffic  control device  under  Section 1A.10 of the 2003 MUTCD.  NATURE OF THE PROBLEM Traffic  operations  at  roundabouts  create  different  auditory  environments  than  traditional  intersections.   The different  environments  are  challenging  for visually  impaired pedestrians  to  identify and use crossable gaps and/or  to create and  identify opportunities when drivers yield.   When vehicles are present at a roundabout, noise in multiple directions is created simultaneously  as vehicles circulate in the intersection, enter via the yield control entry and exit via the free flow  exit.   The continuous noise can mask  the  traditional auditory cues discussed above. Because of  these challenges, the United States Access Board has issued draft rule making language that will  require some form of signalization at all multilane entries and exits at roundabouts.  The proposed pedestrian hybrid beacon is intended to serve as a possible satisfaction of the U. S.  Access Board’s draft rulemaking, particularly  in cases  that do not meet warrants  for  traditional  pedestrian  signals.  In  the  case  of  a  roundabout,  the  dark  indications  for  vehicles  used  in  the  pedestrian hybrid  beacon  are  seen  as preferable  to  the  green  indications used  at  conventional  pedestrian signals because they minimize confusion with the Yield sign at the roundabout entry.  In addition, the operation of the pedestrian hybrid beacon in a two‐stage operation with flashing  red  operation during  the pedestrian  clearance  interval  is  seen  as  a way  to provide pedestrian  access while providing the minimum amount of delay possible to motorists.   FILENAME: H:\PROJFILE\6317BTM\PED BEACON\REQUEST FOR EXPERIMENTATION\REQUEST FOR EXPERIMENT DOCUMENTATION.DOC 87

NCHRP 3-78: Crossing Solutions for Pedestrians with Vision Impairments at Roundabouts and Channelized Turn Lanes Project #: 6317 June 27, 2008 Page 2 DESCRIPTION OF THE PROPOSED CHANGE This proposal is being conducted in conjunction with NCHRP Project 3‐78, Crossing Solutions at  Roundabouts and Channelized Turn Lanes  for Pedestrians with Visual Disabilities,  led by Ron  Hughes of North Carolina State University. As part of this study, the research term would like to  test the use of a pedestrian hybrid beacon (historically known as a HAWK signal) on a two‐lane  roundabout entry and exit to facilitate pedestrian crossings.  The research team intends to collect  before‐and‐after  data  to  assess  the  effectiveness  of  a  pedestrian  hybrid  signal  as  a  means  to  facilitate crossings for pedestrians, as well as the impacts on traffic operations at the roundabout  due to the pedestrian hybrid signal.  The final report generated from NCHRP 3‐78 is intended to  serve  as  a  resource  for  the  Access  Board’s  standards  related  to  accessibility  and  usability  requirements at roundabouts.  The proposed change would allow  the use of a pedestrian hybrid signal/beacon as described  in  Chapter  4F  of  the  2007  Notice  of  Proposed  Amendments  for  the  Manual  on  Uniform  Traffic  Control Devices, December 2007. The proposed experimental  installation has been designed  in  accordance  with  these  provisions  as  proposed  with  the  exception  that  the  device will  rest  in  DON’T WALK (indicated by Upraised Hand) for pedestrians. This is consistent with applications  at other  locations currently under experimentation  in Tucson, Arizona, and elsewhere and was  approved by the National Committee on Uniform Traffic Control Devices in June 2006.  Details of the proposed installation are included in the attached plans and specifications.  PROPOSED WORK AND RESEARCH PLAN The  proposed  installation  is  on  the  crosswalk  at  the  northwest  corner  of  the  South  Golden  Road/Johnson Street  roundabout as  illustrated  in  the attached plans.  Installation  is planned  for  July 2008. Testing of “before” conditions using  the protocol  identified above was conducted  in  June 2008, and testing of “after” conditions is planned for approximately three months after turn‐ on. A public information campaign is planned in conjunction with signal turn‐on.  The basic form of the research plan is a controlled before‐after study. Before and after tests will be  conducted using selected pedestrians with vision impairments under the supervision of certified  Orientation & Mobility (O&M)  instructors. The research team will videotape all tests for further  evaluation.  For  pedestrians,  the  testing  protocol  will  examine  the  following  parameters:  availability  and  utilization of crossable gaps, availability and utilization of driver yields, pedestrian delay, delay  beyond  first  crossing  opportunity  (yield  or  gap),  and  frequency  of  O&M  interventions.  In  addition,  the  research  plan  is  anticipated  to  examine  a measure  for  crossing  opportunity  and  utilization  due  to  a WALK  signal  phase,  as well  as monitoring  of  jaywalking  behavior  if  the  participants cross against the signal.   For  drivers,  the  primary  parameter  being  collected  is  driver  compliance  with  the  signal  indication. The  research  team will  keep  track  of  the  specific  vehicle phase  and  relate  vehicles  entering the crosswalk to the active phase. This will allow us to keep track of red‐light running  Kittelson & Associates, Inc. Portland, Oregon 88

NCHRP 3-78: Crossing Solutions for Pedestrians with Vision Impairments at Roundabouts and Channelized Turn Lanes Project #: 6317 June 27, 2008 Page 3 events, and more importantly, driver behavior during the flashing red. The type of driver yield— soft yield  (slowing  to allow pedestrian  to cross) or hard yield  (coming  to a complete stop  for a  pedestrian)—will also be recorded.   LENGTH OF EXPERIMENTATION The purpose of this experimentation is to focus specifically on the potential change in accessibility  the device provides to pedestrians with vision disabilities. Therefore, the proposed experiment is  intended to be operated for approximately four months: three months to allow driver adjustment  to  the device,  followed by one month  for “after”  field experimentation with blind subjects. The  device will be installed using temporary construction techniques (e.g., wood poles, aerial cabling,  etc.) to minimize testing cost while providing full functionality for the duration of the experiment.  Other experiments currently  in operation by  the City of Tucson, Arizona,  the City of Portland,  Oregon,  and  others  are  examining  other  elements  of  this  device’s  operation,  including  crash  experience,  variations  on  signal  indications  (flashing  yellow  versus  solid  yellow,  resting  the  pedestrian head dark versus in DON’T WALK, etc.).  SUPPORTING DOCUMENTS This device was  tested  and  reported  in NCHRP Report  562/TCRP Report  112  and was  found  along with  other  red‐indication devices  to have  the highest driver  compliance  rate  among  the  devices  tested  (Reference  1). The  success of  the pedestrian hybrid  signal  to date has  led  to  its  recommendation  for  inclusion  in  the MUTCD  by  the National Committee  on Uniform  Traffic  Control  Devices  in  June  2006  and  its  incorporation  into  the  current  Notice  of  Proposed  Amendments.  REFERENCES 1. Fitzpatrick, K., S. Turner, M. Brewer, P. Carlson, B. Ullman, N. Trout, E. S. Park, J. Whitacre, N.  Lalani,  and  D.  Lord.  NCHRP  Report  562/TCRP  Report  112:  Improving  Pedestrian  Safety  at  Unsignalized  Crossings.  National  Cooperative  Highway  Research  Program/Transit  Cooperative  Research Program, Transportation Research Board, National Academies of Science, Washington,  D.C., 2006.          Kittelson & Associates, Inc. Portland, Oregon 89

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Intersection: Designer: Paul W .Ward/Cade M. Braud Engineer in Responsible Charge: Lee Rodegerdts Date: 1/9/2008 Project No. 6317 Temporary Wood Pole Each 1,000.00$ 4 4,000.00$ 2 Inch Electrical Conduit Lin Foot 7.40$ 30 222.00$ 3 Inch Electrical Conduit Lin Foot 9.02$ 5 45.10$ Pole mounted junction box Each 150.00$ 8 1,200.00$ Pull Box (16"x14"x6") Each 350.00$ 3 1,050.00$ Sign Panel (Class I) Sq Foot 16.50$ 20 330.00$ Pedestrian Signal Face (16) (Countdown) Each 610.00$ 4 2,440.00$ Traffic Signal Face (12-12-12) Each 767.37$ 4 3,069.48$ Traffic Signal Controller Cabinet Each 22,000.00$ 1 22,000.00$ Pedestrian Push Button Each 1,250.00$ 4 5,000.00$ Signal Cable Lin Foot 4.93$ 635 3,130.55$ Thermoplastic Pavement Marking (Xwalk-Stopline) Sq Foot 10.05$ 96 964.80$ 39,500.00$ 7,900.00$ 5,900.00$ 53,300.00$ Total Cost Estimate Project Subtotal Plus 20% Contingency Plus 15% Construction Engineering ITEM UNITS UNIT PRICE QUANTITY COST PER ITEM TRAFFIC DESIGN PRELIMINARY COST ESTIMATES Temp. Roundabout Ped. Signal Preliminary Cost Estimates 115

Next: Appendix G: Participant Survey Forms »
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 Supporting Material to NCHRP Report 674
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TRB’s National Cooperative Highway Research Program (NCHRP) Web-Only Document 160 includes appendices B through N to NCHRP Report 674: Crossing Solutions at Roundabouts and Channelized Turn Lanes for Pedestrians with Vision Disabilities, which explores information related to establishing safe crossings at roundabouts and channelized turn lanes for pedestrians with vision disabilities.

Appendices B through N to NCHRP Report 674, which are included in NCHRP Web-Only Document 160, are as follows:

• Appendix B: Long List of Treatments

• Appendix C: Team Treatment Survey

• Appendix D: Details on Site Selection

• Appendix E: Details on Treatment and Site Descriptions

• Appendix F: Details on PHB Installation

• Appendix G: Participant Survey Forms

• Appendix H: Details on Team Conflict Survey

• Appendix I: Details on Simulation Analysis Framework

• Appendix J: Details on Accessibility Measures

• Appendix K: Details on Delay Model Development

• Appendix L: Details on Roundabout Signalization Modeling

• Appendix M: Use of Visualization in NCHRP Project 3-78A

• Appendix N: IRB Approval and Consent Forms

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