U.S. Department of Transportation
Federal Highway Administration
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Federal Highway Administration Research and Technology
Coordinating, Developing, and Delivering Highway Transportation Innovations
This report is an archived publication and may contain dated technical, contact, and link information |
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Publication Number: FHWA-HRT-10-043
Date: September 2010 |
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Effects of Yellow Rectangular Rapid-Flashing Beacons on Yielding at Multilane Uncontrolled CrosswalksPDF Version (601 KB)
PDF files can be viewed with the Acrobat® Reader® FOREWORDThe overall goal of the Federal Highway Administration's (FHWA) Pedestrian and Bicycle Safety Research Program is to increase pedestrian and bicycle safety and mobility. From better crosswalks, sidewalks, and pedestrian technologies to growing educational and safety programs, the program strives to make it safer and easier for pedestrians, bicyclists, and drivers to share roadways. This study was part of a larger FHWA research study to quantify the effectiveness of existing and new engineering countermeasures in improving safety and operations for pedestrians and bicyclists. This effort involved data collection and analysis to determine whether these countermeasures increased driver yielding to pedestrians. In this study, the safety effectiveness of the rectangular rapid-flashing beacon (RRFB) for pedestrians was evaluated using a before-after time-series analysis. This report will interest engineers, planners, and other practitioners who are concerned about implementing pedestrian and bicycle treatments as well as city, State, and local authorities who have a shared responsibility for public safety. Monique R. Evans Director, Office of Safety Research and Development Notice This document is disseminated under the sponsorship of the
U.S. Department of Transportation in the interest of information exchange. The
U.S. Government assumes no liability for the use of the information contained in this document. The
U.S. Government does not endorse products or manufacturers. Trademarks or manufacturers' names appear in this report only because they are considered essential to the objective of the document. Quality Assurance Statement The Federal Highway Administration (FHWA) provides high-quality information to serve Government, industry, and the public in a manner that promotes public understanding. Standards and policies are used to ensure and maximize the quality, objectivity, utility, and integrity of its information. FHWA periodically reviews quality issues and adjusts its programs and processes to ensure continuous quality improvement. Technical Report Documentation Page
SI* (Modern Metric) Conversion Factors TABLE OF CONTENTSCHAPTER 4. EXPERIMENT 2CHAPTER 8. SUMMARY, CONCLUSION, AND DISCUSSION LIST OF FIGURES Figure 1. Photo. RRFB with two forward-facing LED flashers and a side-mounted LED flasher Figure 3. Graph. Mean yielding percentage for each condition Figure 5. Graph. Driver yielding behavior at the 58th Street N site Figure 6. Graph. Relative efficacy of the side-mounted yellow beacon at the 4th Street S site Figure 7. Photo. Perpendicular lighting (left panel) and Direct Aim® lighting (right panel) LIST OF TABLES Table 1. Average yielding compliance per condition including follow-up for each site Table 3. Characteristics at each of the treatment sites Table 4. Florida data estimates of treatment effect parameters and associated t-ratios and p-values Table 5. Baseline and follow-up yielding data at sites in Florida, Illinois, and Washington, DC |