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| Author | : Allison J. Schneider |
| Publisher | : |
| Total Pages | : 169 |
| Release | : 2014 |
| Genre | : Roads |
| ISBN | : |
| Author | : Brian G. Pfeifer |
| Publisher | : |
| Total Pages | : 60 |
| Release | : 1993 |
| Genre | : Roads |
| ISBN | : |
| Author | : Amin Akhnoukh |
| Publisher | : Springer Nature |
| Total Pages | : 1211 |
| Release | : 2022-04-21 |
| Genre | : Technology & Engineering |
| ISBN | : 3030798011 |
This volume focuses on recent advances in the planning, design, construction and management of new and existing roads with a particular focus on safety, sustainability and resilience. It discusses field experience through case studies and pilots presented by leading international subject-matter specialists. Chapters were selected from the 18th International Road Federation World Meeting & Exhibition, Dubai 2021.
| Author | : K. K. Mak |
| Publisher | : |
| Total Pages | : 84 |
| Release | : 1996 |
| Genre | : |
| ISBN | : |
| Author | : Malcolm H. Ray |
| Publisher | : |
| Total Pages | : 172 |
| Release | : 1997 |
| Genre | : Automobiles |
| ISBN | : |
This synthesis will be of interest to state department of transportation (DOT) roadway design, traffic, structural, maintenance, and research engineers and others concerned with highway safety issues. This synthesis describes the current state of the practice for the use of guardrails and median barriers and their crashworthiness. It includes information about the crashworthiness and typical applications of the most common, permanently installed, nonproprietary guardrail and median barrier systems used in the United States today. A significant amount of detail is included in the text to aid the design, selection, and locating processes for safe and effective guardrails and median barriers. The report presents data obtained from a review of the literature and a survey of state DOTs. The synthesis presents a description of the typical longitudinal barriers in use today, including drawings, the extent of their use, and the most recent testing on each guardrail and barrier system, with particular emphasis on NCHRP Report 230 and 350 requirements. In addition, it discusses the maintenance issues, cost constraints, and common problems with each type of barrier. The synthesis only discusses the crashworthiness of guardrails and median barriers; their transitions and terminals are not discussed.
| Author | : Kevin D. Schrum |
| Publisher | : |
| Total Pages | : 236 |
| Release | : 2013 |
| Genre | : Roads |
| ISBN | : |
The roadway width required to install a guardrail system with a 12-in. (305-mm) blockout is not always available. In response, proprietary non-blocked W-beam guardrail systems were developed and successfully crash tested. However, the use of proprietary systems requires the State Deparments of Transportation to maintain inventory of specialized components. Therefore, a mon-proprietary, non-blocked W-beam guardrail system was developed.
| Author | : Sana M. Moran |
| Publisher | : |
| Total Pages | : 0 |
| Release | : 2020 |
| Genre | : Automobiles |
| ISBN | : |
The purpose of the testing reported herein was to assess the performance of the Texas Department of Transportation (TxDOT) W-beam guardrail with 71⁄2-inch diameter round wood posts in concrete mow strip according to the safety-performance evaluation guidelines included in the American Association of Safety Highway and Transportation Officials Manual for Assessing Safety Hardware (MASH) for Test Level Three (TL-3) longitudinal barriers. The crash test performed was in accordance with MASH Test 3-11, which involves a 2270P vehicle impacting the TxDOT W-beam guardrail with 71⁄2-inch diameter round wood posts in concrete mow strip at a target impact speed and impact angle of 62 mi/h and 25°, respectively. The TxDOT W-beam guardrail with 71⁄2-inch diameter round wood posts in concrete mow strip performed acceptably for MASH Test 3-11.
| Author | : Howie Fang |
| Publisher | : |
| Total Pages | : 121 |
| Release | : 2017 |
| Genre | : Roads |
| ISBN | : |
| Author | : American Association of State Highway and Transportation Officials. Task Force for Roadside Safety |
| Publisher | : |
| Total Pages | : 560 |
| Release | : 1989 |
| Genre | : Roads |
| ISBN | : |
| Author | : |
| Publisher | : |
| Total Pages | : 205 |
| Release | : 2002 |
| Genre | : Bridge railings |
| ISBN | : |
In this research, a W-beam guardrail system was developed for installation with the steel post attached to the top of a low-fill concrete culvert. The guardrail system was constructed with a 2.66-mm (12-gauge) thick W-beam rail totaling 53.34 m in length. The post spacing was 1,905-mm on center for post numbers 1-9 and 33-41, while the post spacing for post numbers 9-33 was 952.5-mm on center. Two full-scale vehicle crash tests, using 3/4 ton pickup trucks, were performed on the W-beam guardrail system.
