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

Description

TRB's National Cooperative Highway Research Program (NCHRP) Report 674: Crossing Solutions at Roundabouts and Channelized Turn Lanes for Pedestrians with Vision Disabilities 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 were published as NCHRP Web-Only Document 160. The Appendices 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

On August 17, 2011, TRB co-sponsored a web briefing or "webinar" that presented information about the report. View the webinar page for more information and a link to the recorded webinar.

NCHRP Report 674:

Crossing Solutions at Roundabouts and Channelized Turn Lanes for Pedestrians with Vision Disabilities

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