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Author: Forrest M. Council
Publisher:
ISBN:
Category : Cameras
Languages : en
Pages : 100
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Book Description
The fundamental objective of this research was to determine the effectiveness of red-light-camera (RLC) systems in reducing crashes. The study involved an empirical Bayes (EB) before-after research using data from seven jurisdictions across the United States to estimate the crash and associated economic effects of RLC systems. The study included 132 treatment sites, and specially derived rear end and right-angle unit crash costs for various severity levels. Crash effects detected were consistent in direction with those found in many previous studies: decreased right-angle crashes and increased rear end ones. The economic analysis examined the extent to which the increase in rear end crashes negates the benefits for decreased right-angle crashes. There was indeed a modest aggregate crash cost benefit of RLC systems. A disaggregate analysis found that greatest economic benefits are associated with factors of the highest total entering average annual daily traffic (AADT), the largest ratios of right-angle to rear end crashes, and with the presence of protected left-turn phases. There were weak indications of a spillover effect that point to a need for a more definitive, perhaps prospective, study of this issue.
Author: Forrest M. Council
Publisher:
ISBN:
Category : Cameras
Languages : en
Pages : 100
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Book Description
The fundamental objective of this research was to determine the effectiveness of red-light-camera (RLC) systems in reducing crashes. The study involved an empirical Bayes (EB) before-after research using data from seven jurisdictions across the United States to estimate the crash and associated economic effects of RLC systems. The study included 132 treatment sites, and specially derived rear end and right-angle unit crash costs for various severity levels. Crash effects detected were consistent in direction with those found in many previous studies: decreased right-angle crashes and increased rear end ones. The economic analysis examined the extent to which the increase in rear end crashes negates the benefits for decreased right-angle crashes. There was indeed a modest aggregate crash cost benefit of RLC systems. A disaggregate analysis found that greatest economic benefits are associated with factors of the highest total entering average annual daily traffic (AADT), the largest ratios of right-angle to rear end crashes, and with the presence of protected left-turn phases. There were weak indications of a spillover effect that point to a need for a more definitive, perhaps prospective, study of this issue.
Author:
Publisher:
ISBN:
Category : Electronic traffic controls
Languages : en
Pages : 148
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Book Description
Red light running, which is defined as the act of a motorist entering an intersection after the traffic signal has turned red, caused almost 5,000 crashes in Virginia in 2003, resulting in at least 18 deaths and more than 3,800 injuries. In response to a June 2, 2004, directive from Virginia Secretary of Transportation Whittington W. Clement, an evaluation of the photo-red enforcement programs that operate in Virginia was undertaken. Generally, Virginia's photo-red programs are technically feasible. Case law strongly indicates that the programs pass legal muster in the three key areas: privacy, equal protection, and due process, and public opinion surveys suggest that roughly two-thirds of respondents support red light cameras. There is, however, a practical issue with regard to issuing citations for out-of-state motorists, as noted in the report. Although an economic analysis was not feasible in the study time frame, a limited fiscal analysis suggests that, in general, Virginia localities are not generating net revenue. Finally, an operational analysis based on violations and crashes shows a potential but not definite safety improvement. The cameras clearly affect driver behavior; across the 23 intersections where reliable citation data could be obtained, citations decreased by an average of 21% per intersection. Further the data show that the cameras are correlated with a definite decrease in crashes that are directly attributable to red light running, a definite increase in rear-end crashes, a possible decrease in angle crashes, a net decrease in injury crashes attributable to red light running, and an increase in total injury crashes. More time is needed to determine whether the severity of the eliminated red light running crashes was greater than that of the induced rear-end crashes. The report recommends that Virginia's photo-red enforcement programs be continued for an additional year to resolve this question and to collect additional data that was not feasible during the 6-month time frame of this report.
Author: United States. Congress. House. Committee on Science. Subcommittee on Technology
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 68
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Book Description
Author: Hugh W. McGee
Publisher: Transportation Research Board
ISBN: 0309258596
Category : Traffic safety
Languages : en
Pages : 93
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Book Description
TRB National Cooperative Highway Research Program (NCHRP) Report 731: Guidelines for Timing Yellow and All-Red Intervals at Signalized Intersections offers guidance for yellow change and all-red clearance intervals at signalized intersections. The guidelines provide a framework that can be easily applied by state and local transportation agencies.
Author: United States. Congress. House. Committee on Transportation and Infrastructure. Subcommittee on Surface Transportation
Publisher:
ISBN:
Category : Psychology
Languages : en
Pages : 238
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Book Description
Author: James A. Bonneson
Publisher:
ISBN:
Category : Law enforcement
Languages : en
Pages : 122
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Book Description
The objectives of this research project are to: (1) quantify the safety impact of red-light-running at intersections in Texas, and (2) provide guidelines for identifying truly problem intersections and whether enforcement or engineering countermeasures are appropriate. This report documents the findings from the first year of a two-year project. During the first year, data were collected to quantify the character and extent of red-light violations and related crashes in Texas. Data were also collected to quantify the effectiveness of intersection traffic control enforcement. The findings from a review of the literature on red-light-running and an analysis of red-light-running crash data are included in this report. A procedure for identifying and quantifying red-light-running-related crashes is described.
Author: Ali Kamyab
Publisher:
ISBN:
Category : Electronic traffic controls
Languages : en
Pages : 150
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Book Description
This research study examines the scope of red light running in Iowa, reviewed red light reduction studies and programs nationwide, and proposed countermeasures to address significant violation problems.
Author: Simon Hakim
Publisher: Springer Science & Business Media
ISBN: 1441903712
Category : Business & Economics
Languages : en
Pages : 293
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Book Description
The terrorist attack of September 11, 2001, and the natural disasters of Hurricanes Katrina and Rita demonstrated the challenges that governments face in initial response and recovery efforts. This book details the important steps that governors and mayors have initiated to address the serious problems illustrated by these recent disasters. The innovative solutions include developing more reliable communications, creating public–private partnerships to supplement public emergency services, establishing fusion c- ters that interpret information, and creating joint operations centers to manage the response to the event. There are important lessons to be learned from the managerial and technological innovations that the governors and mayors describe in this book. As the Mayor of Philadelphia and now as the Governor of Pennsylvania, I have contributed to three books on best practices of state and local governments. I am pleased to participate in the efforts of the Center for Competitive Government of the Fox School at Temple University to address the important issues faced by governments. This book makes an important contribution to the public discussion on the public and private sectors’ role in homeland security. Commonwealth of Pennsylvania Governor Edward G. Rendell vii Acknowledgement The editors would like to acknowledge Dr. M. Moshe Porat, Dean of the Fox School at Temple where the Center for Competitive Government is located. His strong c- tribution and support for the Mayors’ Summits is most appreciated. Many chapters for our books including this one emanated from these Summits.
Author: Dinesh Mohan
Publisher: CRC Press
ISBN: 0203305337
Category : Technology & Engineering
Languages : en
Pages : 327
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Book Description
At least 5 million people die each year from injuries, and about half the deaths in the 10-24 age group are accountable to them. This is a major health problem for which a number of strategies for prevention and control can be developed. This book presents a series of the plenary and state-of-the-art presentations from the 5th World Conference on Injury Prevention and Control. There is a focus on transportation, workplace, sport and leisure, and domestic sectors, and an exploration of the legal, medical, environmental, safety and governmental issues which play a part in the subject. Practitioners and researchers in a variety of activities, including epidemiology and public health, occupational health and safety, ergonomics and product design, medicine, criminology, engineering and physical sciences, and the behavioural sciences, should find this a useful and challenging work.
Author:
Publisher:
ISBN:
Category : Traffic safety
Languages : en
Pages : 216
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Book Description
