Arizona Highway Magazine
Arizona Transportation Research Center (ATRC) ~ Estimated State Planning & Research Program FY2005
The research will result in information that could be used to guide a more effectiveuse of Arizona Highways magazine to stimulate tourism and tourist revenue generation inArizona. Arizona Highways magazine will be the process owner. ... Traditional analyses performed by state traffic and safety engineers to identifyhighway safety issues, to design and implement solutions, and to evaluate the results havebeen undertaken using largely manual methods in the past. Many analyses can now beautomated using geographic information system technology to enhance their effectivenessand timeliness. These processes depend upon the availability of suitable accident records,traffic data, and other related data. Federal highway officials recommend and supportdeveloping more accurate, timely and complete highway safety data and traffic recordssystems. To help reduce highway deaths and injuries, federal officials have developedprototype tools around such data for various safety analyses: Strip, Spot/Intersection,Cluster, Sliding Scale, and Truck Corridor analysis. ... [Read More]
Public Roads Magazine
Now, guaranteed amounts for highway spending are linked to actual Highway Trust Fund receipts and can be used only to support projects eligible under federal highway and highway safety programs. ... Prior to ISTEA, the Federal-Aid Highway Program had been directed primarily toward the construction and improvement of four federal-aid systems - Interstate, primary, secondary, and urban. ISTEA changed that to two - a new National Highway System and the Interstate Highway System. ... [Read More]
Public Roads Magazine
AASHTO's Guide for the Design of Pavement Structures, initially published in the 1970s and updated several times (most recently in 1993, with a 1998 supplement), is the primary document used to design new and rehabilitated highway pavements. JTFP kicked off an effort to develop the 2002 edition of the guide at a 1996 workshop in which pavement experts developed a framework for improving it. The workshop participants concluded that throughout the highway community, the major emphasis in pavement design is now on rehabilitation, for which empirical design approaches are often inadequate. Because mechanistic-empirical approaches more realistically characterize in-service pavements and improve the reliability of designs, the next generation of design approaches, which will be documented in the 2002 edition of the design guide, will be based on mechanistic principles. ... [Read More]
Public Roads Magazine
The LTPP program, which began in 1987, has collected data from more than 2,500 test sections located at 932 sites on in-service highways throughout the United States and Canada. These data can be analyzed to aid pavement design, construction, maintenance, and rehabilitation. The latest version of DataPave provides desktop access to most of the LTPP data collected, making this data readily available to the entire highway community. Since analysis efforts can be tailored to local or regional sites, state or regional highway agencies can develop cost-effective pavement strategies to address their own unique requirements. ... [Read More]
Arizona Department of Transportation
magazine ... American Association of State Highway and Transportation Officials ... Highway Expansion and Extension Loan Program (HELP) ... [Read More]
Public Roads Magazine
WAP enabled the community to comply with new Federal Railroad Administration safety regulations. The $80 million project converted the 4.0-kilometer- (2.5-mile-) long railroad tunnel into a multimodal railroad and highway facility, the only combined highway/railroad tunnel in the world. It is also the longest highway tunnel in North America. The project also includes two bridges, a 152.4-meter- (500-foot-) long highway tunnel, 4.2 kilometers (2.6 miles) of road, and support facilities. ... [Read More]
Public Roads Magazine
featuring developments in federal highway policies, programs, and research and technology ... Highway Rehabilitation and Maintenance ... Second International Symposium on Highway Geometric Design ... [Read More]
Public Roads Magazine
David Gibson is a highway research engineer on the Enabling Technologies Team of FHWA's Office of Operations Research and Development. He is a registered professional traffic engineer and has a master's degree in transportation from Virginia Polytechnical Institute and State University. His areas of interests include traffic sensor technology, traffic control hardware, traffic modeling, computers, and traffic engineering education (specifically, how applying advanced technologies can simplify an engineer's daily work). He worked with Milton K. (Pete) Mills to develop the first two editions of the Traffic Detector Handbook and to develop the original type 170 traffic signal controller system. ... [Read More]
Public Roads Magazine
Preservation of Wetlands on the Federal-Aid Highway System ... Highway Research Center ... Two organizations within FHWA - the Research, Development, and Technology Service Business Unit and the Federal Lands Highway Core Business Unit - have a rich history and a continuing program of internal partnering to enhance FHWA's research and technology delivery to the agency's customers. ... [Read More]
Public Roads Magazine
The findings regarding highway conditions correspond to data from FHWA's most recent report on the physical condition of the highway system. Recent FHWA highway condition and performance data indicate that the percentage of miles on the National Highway System with acceptable ride quality increased from 90 percent in 1995 to 93 percent in 1999. The number of deficient bridges declined from 26 percent of the total in 1995 to 23 percent in 1999. ... FHWA and its forerunner, the Bureau of Public Roads, have published the report every year since 1945. It contains statistical data on motor fuel, motor vehicles, driver licensing, highway-user taxation, state and local highway financing, highway mileage, federal aid for highways, select tables and charts from the 1995 Nationwide Personal Transportation Survey, and international data. The data also are used as the principal data in calculating each state's share of funds under TEA-21. ... [Read More]
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