Public roadsPub Date : 2015-11-01DOI: 10.5040/9781472593900.pt-004
Kyle Kitchel
{"title":"A New Era Is Dawning","authors":"Kyle Kitchel","doi":"10.5040/9781472593900.pt-004","DOIUrl":"https://doi.org/10.5040/9781472593900.pt-004","url":null,"abstract":"With roots in roadway legislation enacted in the early 1900s, tribal public authorities have emerged across the country and are developing into full-fledged departments of transportation. Tribes now have the option to carry out their transportation program directly through FHWA and 130 tribal DOTs are now working to improve the transportation infrastructure in Indian Country. This article traces the history of tribal transportation legislation and looks at current activities of tribal DOTs.","PeriodicalId":187306,"journal":{"name":"Public roads","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123506366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Public roadsPub Date : 2014-05-01DOI: 10.2307/j.ctv62hf03.8
Chris Dingman
{"title":"Neighbors Helping Neighbors","authors":"Chris Dingman","doi":"10.2307/j.ctv62hf03.8","DOIUrl":"https://doi.org/10.2307/j.ctv62hf03.8","url":null,"abstract":"Wait time and delays at the United States-Canada border in recent years have been an impediment to free flow. The Federal Highway Administration (FHWA) is working with the U.S. Customs and Border Protection, Transport Canada, and the Canada Border Services Agency on projects and activities using technology to measure border wait time. The working group has developed a border wait-time project designed to investigate, test, and deploy an automated, technology-based system for measuring wait times at two crossing locations on the land border. Another project took place in Minnesota to develop a bridge border crossing. FHWA provided information assistance to the Minnesota Department of Transportation in order to facilitate this project.","PeriodicalId":187306,"journal":{"name":"Public roads","volume":"203 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123615827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Public roadsPub Date : 2013-09-01DOI: 10.3390/books978-3-03936-620-0
Lew Villotti, W. K. Brethauer
{"title":"Predicting the Future","authors":"Lew Villotti, W. K. Brethauer","doi":"10.3390/books978-3-03936-620-0","DOIUrl":"https://doi.org/10.3390/books978-3-03936-620-0","url":null,"abstract":"Planning transport infrastructure takes a good deal of forecasting. It is necessary to estimate future growth of the area, which can be done with scenario planning. In the past, growth projections were based on carrying the most recent past trends from the current situation to some point in the future. This system was accurate for near-term projections, but less so for more distant ones. In recent years, modelers have compensated by developing more reactive policy models that allow for policy changes. Scenario planning, which integrates policy models with geographic information systems (GIS), shows alternative futures resulting from varying policy choices. Metropolitan planning organizations (MPOs) are at the forefront of scenario planning. MPOs identify transportation issues and needs. Long-range planning includes analysis of alternatives to meet projected future demands, while maintaining a safe and efficient transportation system to ensure mobility without adverse effects on the environment. Transportation agencies can use scenario planning to conduct analyses for project evaluation in order to ensure that decisions are consistent with future of the region.","PeriodicalId":187306,"journal":{"name":"Public roads","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124194283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Public roadsPub Date : 2003-07-01DOI: 10.2307/j.ctvx5w8mg.38
C. Burbank
{"title":"A NATURAL BALANCE","authors":"C. Burbank","doi":"10.2307/j.ctvx5w8mg.38","DOIUrl":"https://doi.org/10.2307/j.ctvx5w8mg.38","url":null,"abstract":"Once construction of the U.S. Interstate and Defense Highway System began, shortly after enactment of the Federal Aid Highway Act of 1956, citizens and local officials across the nation began letting the FHWA know that they would not accept adverse impacts from the new highways. FHWA was forced to broaden its mission from that of providing highways to meet traffic demand to one that includes reflecting the cultural, economic, environmental, and social needs of U.S. cities and sensitive rural areas. This article provides an overview of how the FHWA handled the task of building highways while minimizing or eliminating damage to the environment, and of how the FHWA expanded its mission to include protecting and enhancing the environment during the 1990s.","PeriodicalId":187306,"journal":{"name":"Public roads","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125824701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Public roadsPub Date : 2002-07-01DOI: 10.4324/9780080938875-15
T. Ferragut, D. Harrington, Marcia Brink
{"title":"Road map to the future","authors":"T. Ferragut, D. Harrington, Marcia Brink","doi":"10.4324/9780080938875-15","DOIUrl":"https://doi.org/10.4324/9780080938875-15","url":null,"abstract":"A number of questions relating to the future of concrete pavement technology are guiding a project to develop a far-reaching road map to tomorrow's concrete pavements. Under the Transportation Equity Act for the 21st Century, the U.S. Congress authorized the Federal Highway Administration (FHWA) to undertake a research program to improve the performance of concrete pavements. This article describes the ongoing efforts of the Long-Term Plan for Concrete Pavement Research and Technology, being developed under the FHWA's Concrete Pavement Technology Program.","PeriodicalId":187306,"journal":{"name":"Public roads","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130184128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Public roadsPub Date : 1999-11-01DOI: 10.1061/40753(171)18
A. Sohanghpurwala, W. T. Scannall
{"title":"CONDITION AND PERFORMANCE OF EPOXY-COATED REBARS IN BRIDGE DECKS","authors":"A. Sohanghpurwala, W. T. Scannall","doi":"10.1061/40753(171)18","DOIUrl":"https://doi.org/10.1061/40753(171)18","url":null,"abstract":"The Federal Highway Administration and partners provided funding for a joint research project to evaluate in-service bridge decks in Pennsylvania and New York constructed with epoxy-coated reinforcing steel. This study examines the long-term performance of epoxy-coated reinforcing steel in concrete bridges and structures exposed to salt. The sampling plan was designed to detect progressive corrosion, even if the frequency of occurrence was less than 3% of the global population. Results showed that the frequency of occurrence of progressive corrosion is less than 3% in Pennsylvania and at least 3% in New York. A total of 409 rebars showed no evidence of corrosion; 62 bars had a number of small, countable corrosion spots; and only two rebars, both in New York, exhibited significant visible corrosion. Coating adhesion reduction or loss was found to be more prevalent and extensive. Only 47% of the bars tested had no reduction in adhesion. No correlation was found with corrosion-condition rating and chloride exposure time or chloride content. Among all the variables included in the analyses, logarithm of electrochemical impedance spectroscopy, number of holidays, and number of bare spots were found to be the best predictors of corrosion-condition rating, but in all cases the correlations were weak. Corrosion-condition rating did not correlate with coating thickness, clear concrete cover, color of epoxy, or bridge deck-condition rating. A good correlation between concrete resistivity and coulombs passed was found.","PeriodicalId":187306,"journal":{"name":"Public roads","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125544082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Public roadsPub Date : 1999-09-01DOI: 10.2749/222137801796348601
F. Muchmore
{"title":"GOLD-RUSH GHOST TOWN GETS A NEW ALASKA YELLOW CEDAR BRIDGE","authors":"F. Muchmore","doi":"10.2749/222137801796348601","DOIUrl":"https://doi.org/10.2749/222137801796348601","url":null,"abstract":"The city of Skagway, Alaska, responding to increasing visitor and tourist traffic, recently decided to improve access to the old abandoned ghost town of Dyea. Dyea is 15 km away over a narrow gravel road that winds around two deep fjords. Since the year-round-flowing Nelson Slough runs through the area, a bridge was needed to provide reliable access to Dyea Flats at all tidal stages. The city of Skagway received a grant from the U.S. Department of Agriculture Forest Service for assistance in design and construction of a timber bridge. The grant specified that the bridge must be constructed from untreated Alaska yellow cedar, a naturally decay-resistant wood species, using recently developed stressed-deck technology. The new bridge is simple. strong, aesthetic, and aromatic. The bridge is strong enough to handle any vehicle legally allowed on the road and should serve visitors to this historic area for many years to come.","PeriodicalId":187306,"journal":{"name":"Public roads","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128189981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Public roadsPub Date : 1998-11-01DOI: 10.1007/978-94-017-1486-0_1
R. Betsold
{"title":"THE STATE OF RESEARCH","authors":"R. Betsold","doi":"10.1007/978-94-017-1486-0_1","DOIUrl":"https://doi.org/10.1007/978-94-017-1486-0_1","url":null,"abstract":"","PeriodicalId":187306,"journal":{"name":"Public roads","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127549936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Public roadsPub Date : 1900-01-01DOI: 10.1016/0148-9062(96)81954-1
J. Cooper, I. Buckle
{"title":"LESSONS FROM THE KOBE QUAKE","authors":"J. Cooper, I. Buckle","doi":"10.1016/0148-9062(96)81954-1","DOIUrl":"https://doi.org/10.1016/0148-9062(96)81954-1","url":null,"abstract":"","PeriodicalId":187306,"journal":{"name":"Public roads","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126418542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Public roadsPub Date : 1900-01-01DOI: 10.13023/KTC.RR.1974.384
J. Pigman, K. Agent
{"title":"RAISED PAVEMENT MARKERS AS A TRAFFIC CONTROL MEASURE AT LANE DROPS","authors":"J. Pigman, K. Agent","doi":"10.13023/KTC.RR.1974.384","DOIUrl":"https://doi.org/10.13023/KTC.RR.1974.384","url":null,"abstract":"Raised pavement markers are an effective means of reducing erratic movements at lane-drop locations, particularly under nighttime driving conditions. The cost of raised pavement markers and their installation is nominal (approximately $150 per lane-drop location). It is recommended that raised pavement markers be installed at other lane-drop locations. Markers installed at locations described in this article have not been in place for a sufficient time to determine their durability; however, reports from other States indicate their durability is sufficient to render them economical. If raised pavement markers are installed routinely, steps should be taken to insure they are not damaged by snowplow operations. Rubber-tipped blades have been used successfully in areas with slushy snow or where chemicals are used in conjunction with snowplows. /Author/","PeriodicalId":187306,"journal":{"name":"Public roads","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114396174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
求助内容：
应助结果提醒方式：