Construction and related activities financed through the Federal-aid program are important sources of employment for persons in many industries throughout the economy. A diverse workforce representing all skill levels is supported by investment in highway construction activities, and subsequently in industries which supply materials to the highway
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This report provides background and summary of the scope of work for the pooled fund study, “Durability ofGeosynthetics for Highway Applications.” Status and a summary of initial test results for each of the tasks in thisstudy, as well as a summary of the significant accomplishments to date are provided. Finally, discussion ofgeosynthetic life pred
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This technical summary announces the availability of a series of eight final reports that provide detailed results for nine studies performed as part of the TravTek operational test of an advanced traveler information system (ATIS) and advanced traffic management system (ATMS). Consistent with the goals of the Intelligent Transportation Systems (IT
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The Orlando Test Network Study was one of a series of investigations conducted as part of the TravTek operational test of anadvanced traveler information and traffic management system (ATIS/ATMS). The TravTek system consisted of the OrlandoTraffic Management Center (TMC), the TravTek vehicles, and the TravTek Information and Services Center. The TM
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This file represents Table VM-4 from the 1996 edition of the Federal Highway Administration's "Highway Statistics Series." The table reports 1996 data for Rural and Urban travel, by various types of motor vehicles. The distribution of vehicle type is given for each state, the District of Columbia, and Puerto Rico.
These standard specifications were issued primarily for constructing roads and bridges on Federal Highway projects under the direct administration of the Federal Highway Administration. These specifications are cited as "FP-96" indicating Standard Specifications issued in 1996. When designated in a contract, the FP-96 becomes part of the contract a
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This is a summary of a workshop on performance-based regulations for truck size and weight (TS&W) organized by the U.S. Department of Transportation's Federal Highway Administration. The workshop was held on June 30, 1995, at the Chrysler Center in Ann Arbor, Michigan, on the day after the Fourth International Symposium on Heavy Vehicle Weights and
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Bicyclists or pedestrians are involved in approximately one out of six highway fatalities each year. This research was conducted in order to better understand the precipitating actions, predisposing factors and characteristic populations involved. Some of the factors reviewed include: walking into vehicle intersection, driver violations, midblock d
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This report summarizes the process and lessons learned from the Standardized Travel Time Surveys and Field Test project. The field tests of travel time data collection were conducted in Boston, Seattle, and Lexington in 1993. The methodologies tested include: license plate matching using video cameras; license plate matching using portable computer
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In the Intermodal Surface Transportation Act of 1991, Congress included a provision in Part B, Section 6054 (b) to proceed with the analysis, design, and prototype demonstration of an automated highway system. The Act directs that: “The Secretary (of Transportation) shall develop an automated highway and vehicle prototype from which future fully au
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Deployment of an AHS will require a comprehensive analysis of the facilities contemplated for installation or modification to determine the most appropriate means of implementation. Two basic operational environments, rural and urban, have certain distinguishing features which will affect their implementation strategy. In some cases, urban environm
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The Automated Highway System (AHS) program component of the Intelligent Transportation Systems (ITS) [formerly known as Intelligent Vehicle Highway System (IVHS)] is a broad national effort to provide the basis for, and transition to, the next major performance upgrade of the U.S. vehicle/highway system, through the use of automated vehicle control
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The scope of this report is to document the study results obtained from the Lateral and Longitudinal Control Analysis (Lat/Long) performed by the Autonetics Electronics Systems Division of Rockwell in Anaheim, California. This effort was performed for the Federal Highway Administration (FHWA) during the period September 15, 1993, through November 3
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The objective of this activity area is to “identify, consolidate, and discuss the major technical, design, and implementation issues and risks to be resolved for providing AHS users with a collision-free driving environment under normal operating conditions, including entry to and exit from the system.” Normal operating conditions are taken to be a
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The overall goal of this task included defining the boundaries of an AHS, establish functional requirements, and suggesting potential configuration. Then developing operational sequences through which functions are executed and identifying allocated subsystems were performed. Metrics to gauge severity levels of malfunctions were developed and used
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The overall goal of this task was to identify issues and risks associated with a fully automated AHS vehicle. The primary issues that were addressed were related to vehicle-infrastructure functional decomposition, performance requirements, fail-safety and criticality, communications, self-monitoring and self-diagnosis technology, and overall vehicl
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It is frequently assumed that an Automated Highway System (AHS) will require lanes exclusively dedicated to automated operation, and that operation in mixed traffic is either not safe or not practical. Since these assumptions preclude automated vehicles from sharing existing lanes with manual traffic, they imply the introduction of an AHS will requ
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This report describes the results of a PSA contract awarded to SRI International to analyze applications of advanced Global Positioning System (GPS) measurement techniques to provide data for lateral and longitudinal control of AHS vehicles. The report includes: (1) a review of control sensor requirements suggested by other PSA contractors and AHS
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This report documents the three Rockwell Precursor Systems Analyses of automated Highway Systems tasks of Lateral and Longitudinal Control Analysis, Malfunction Management and analysis, and Vehicle Operations analysis. The overall goal of the Lateral and Longitudinal control analysis task included performing system operational analyses in terms of
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