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NCHRP Report 674: Crossing Solutions at Roundabouts and Channelized Turn Lanes for Pedestrians with Vision Disabilities (2011)
National Cooperative Highway Research Program (NCHRP)

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Rodegerdts, Lee, Guth, David, Long, Richard, Bentzen, Billie Louise, Schroeder, Bastian, Emerson, Robert Wall, Hughes, Ronald, Rouphail, Nagui, Cunningham, Christopher, Salamati, Katy, Kim, Dae, Barlow, Janet, Myers, Ed, Transportation Research Board. "Abbreviations used without definitions in TRB publications." NCHRP Report 674: Crossing Solutions at Roundabouts and Channelized Turn Lanes for Pedestrians with Vision Disabilities. Washington, DC: The National Academies Press, 2011.

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Page
141
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Page
141
Front Matter (R1-R11)
Summary (1-9)
Safety Is Not Synonymous with Access (10-10)
Scope of Work (11-11)
Content of This Report (12-12)
Facility Design (13-14)
Locating the Crosswalk (15-15)
The U.S. Access Board and ADA (16-16)
Midblock Crossings and Conventional Intersections (17-18)
Blind Pedestrian Crossing Experiments (19-19)
Driver Information Treatments (20-20)
Crosswalk Geometric Modification (21-21)
Signalization Treatments with APS (22-22)
Grade-Separated Crossing (23-23)
Participants (24-24)
Participant Questionnaires (25-25)
Identification and Selection of Treatments (26-26)
Site Selection (27-27)
Selection of Treatment Sites (28-33)
Crossing Performance Characteristics (34-34)
Opportunity Utilization Criterion (35-35)
Event Definitions (36-36)
Performance Measures (37-38)
Performance Measure Example (39-39)
Research Hypotheses (40-42)
Crossing Performance Results (43-44)
Participant Feedback (45-45)
Impact on Vehicular Traffic (46-46)
Study Overview (47-47)
Crossing Performance Results (48-49)
Impact on Vehicular Traffic (50-50)
Crossing Performance Results (51-54)
Participant Feedback (55-55)
Compliance with Signal Indications (56-57)
Impact on Vehicular Traffic (58-58)
Summary of Results (59-61)
Introduction (62-62)
Results (63-66)
Model Comparison (67-68)
Model Application (69-72)
Extension to Safety Modeling (73-73)
Applying the Framework to Simulation (74-77)
Simulation-Based Analysis of Signalized Crosswalks (78-80)
Discussion (81-81)
Synthesis of Approach (82-82)
Implications of Field Study Results (83-84)
Policy Implications (85-85)
The Impact of Vehicle Speed (86-86)
Inter-Participant Variability (87-87)
Learning Effect and O&M Training (88-88)
Confidence in Decision-Making (89-89)
Viability of Interventions as a Measure of Risk (90-90)
Driver Yielding and Enforcement (91-91)
Channelized Turn Lanes (92-92)
Two-Lane Roundabouts (93-93)
Future Research Needs (94-96)
References (97-98)
Appendix A - Detailed Results (99-100)
Crossing Statistics for CTL Site and Treatments (101-107)
Channelized Turn Lane Results Summary (108-109)
Crossing Statistics for Crosswalk (110-114)
Golden, CO, Single-Lane Roundabout Summary (115-115)
Site Description (116-117)
Crossing Statistics (118-119)
Discussion (120-120)
Pretest Pedestrian Behavior at the RCW (121-122)
Posttest Pedestrian Behavior at the RCW (123-123)
Performance Statistics for RCW (124-126)
RCW Summary (127-127)
Pretest Pedestrian Behavior at the PHB Crosswalk (128-129)
Posttest Blind Pedestrian Behavior at the PHB Crosswalk (130-132)
Performance Statistics at the PHB Crosswalk (133-135)
Driver Behavior at the PHB (136-137)
PHB Crosswalk Summary (138-139)
Appendix N - IRB Approval and Consent Forms (140-140)
Abbreviations used without definitions in TRB publications (141-141)

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OCR for page 141
Abbreviations and acronyms used without definitions in TRB publications: AAAE American Association of Airport Executives AASHO American Association of State Highway Officials AASHTO American Association of State Highway and Transportation Officials ACI­NA Airports Council International­North America ACRP Airport Cooperative Research Program ADA Americans with Disabilities Act APTA American Public Transportation Association ASCE American Society of Civil Engineers ASME American Society of Mechanical Engineers ASTM American Society for Testing and Materials ATA Air Transport Association ATA American Trucking Associations CTAA Community Transportation Association of America CTBSSP Commercial Truck and Bus Safety Synthesis Program DHS Department of Homeland Security DOE Department of Energy EPA Environmental Protection Agency FAA Federal Aviation Administration FHWA Federal Highway Administration FMCSA Federal Motor Carrier Safety Administration FRA Federal Railroad Administration FTA Federal Transit Administration HMCRP Hazardous Materials Cooperative Research Program IEEE Institute of Electrical and Electronics Engineers ISTEA Intermodal Surface Transportation Efficiency Act of 1991 ITE Institute of Transportation Engineers NASA National Aeronautics and Space Administration NASAO National Association of State Aviation Officials NCFRP National Cooperative Freight Research Program NCHRP National Cooperative Highway Research Program NHTSA National Highway Traffic Safety Administration NTSB National Transportation Safety Board PHMSA Pipeline and Hazardous Materials Safety Administration RITA Research and Innovative Technology Administration SAE Society of Automotive Engineers SAFETEA-LU Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users (2005) TCRP Transit Cooperative Research Program TEA-21 Transportation Equity Act for the 21st Century (1998) TRB Transportation Research Board TSA Transportation Security Administration U.S.DOT United States Department of Transportation