United States. Federal Highway Administration. Office of Engineering
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1995-11-01
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Subsurface Utility Engineering (SUE) is an engineering process that incorporates new and existing technologies to accurately and comprehensively identify, characterize, and map underground utility facilities early in the development of a highway project. This process includes dissemination of the resulting underground utilities information to the r
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The objectives of these tasks are the following: · Identify the types of infrastructure configurations which should be deployed. Representative System Configuration (RSC) definitions are discussed in Volume I. Since RSC I1 requires no change to the infrastructure, the studies included RSCs I2 and I3. RSC definitions are provided in Section 1.3.1. ·
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The objectives of these tasks are the following: · Identify the types of infrastructure configurations which should be deployed. Representative System Configuration (RSC) definitions are discussed in Volume I. Since RSC I1 requires no change to the infrastructure, the studies included RSCs I2 and I3. RSC definitions are provided in Section 1.3.1. ·
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The objectives of these tasks are the following: · Identify the types of infrastructure configurations which should be deployed. Representative System Configuration (RSC) definitions are discussed in Volume I. Since RSC I1 requires no change to the infrastructure, the studies included RSCs I2 and I3. RSC definitions are provided in Section 1.3.1. ·
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The program described by this eight-volume report, a resource materials document type, identified the issues and risks associated with the potential design, development, and operation of an Automated Highway System (AHS), a highway system that utilizes limited access roadways and provides "hands off" driving. The AHS effort was conducted by a team
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The program described by this eight-volume report, a resource materials document type, identified the issues and risks associated with the potential design, development, and operation of an Automated Highway System (AHS), a highway system that utilizes limited access roadways and provides "hands off" driving. The AHS effort was conducted by a team
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Formulating the expected costs and benefits of an automated highway system requires the use of a conceptual framework for determining types of costs and benefits, measures of cost and benefits, and an understanding of the uncertainty involved in the range of estimates derived as a result of the framework. We have developed an analytical matrix that
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The AHS entry and exit systems must be consistent with the AHS goals of safety, throughput, user comfort, and environmental impact. The systems must be designed to enable the vehicles and operators to safely enter and exit the roadway at rates that ensure that the AHS system’s throughput objectives are met. The entry and exit areas must enable proc
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In contrast to most automobiles, commercial vehicles are bought and operated to earn a profit. Desirability and feasibility of an MIS for commercial and transit vehicles depends on the readiness of the commercial truck operators to pay for MIS investments. The final MIS concepts as well as the steps to get to there have to be designed with this in
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Successful deployment of an AHS requires examination of all operational scenarios and associated operational elements under which an AHS will be utilized. The promise and the nature of automated highways, which involve instrumentation through electronic means, requires consideration of applications completely different from those associated with th
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The Automated Highway System (Al-ISI program component of the Intelligent Transportation Systems (ITS) 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 technology. As part of the Analysis Phase. the Precursor S
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To be successful, an AHS-engineered system must be compatible with the institutional and social environment in which it is expected to operate. Institutional aspects include such dimensions as relevant organizations and their interactions, the legal and regulatory framework, and the role of politics in the shaping of policy. Societal aspects includ
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Increasing the safety of travel is a principal goal for an AHS and one of the baseline assumptions on which this study is based. Establishing the safety parameters and manner in which vehicle, highway, and human failures can be moderated to produce the minimum harm is likely to be one of the main drivers in selection of AHS architectures and system
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Implementation and daily operations of an AHS system are anticipated to be different in a rural or intercity environment as opposed to the urban environment. Variations of these environments will be manifested in the field, including fringe areas of heavily populated urban areas and small population centers along the intercity, otherwise rural, env
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In order that the AHS remains a successful component of a transportation system, daily operations and maintenance issues must be prepared for and strategies developed. This activity area identifies issues that are sometimes overlooked in a major deployment project (e.g., the need to provide staffing, vehicles, funding and risk management to ensure
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This document is the Executive Summary of the results of the study of Lateral/ Longitudinal control issues under the Precursor System Analyses for the Automated Highway System (AHS). It is intended to provide a high-level overview of outcomes and conclusions for those not interested in the full depth of the documented results. Having read this docu
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The check-out process is a critical component for ensuring AHS safety. It concerns the process of assuring safe transfer of control from the automated driving system to manual driving. Because the driver has been out of the driving loop during AHS operation, there is concern that the driver will not be ready or capable of assuming driving control a
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This report is the final documentation of a Comparable Systems Analysis which compared Automated Highways Systems (AHS) to Air Traffic management (ATM). Lessons Learned from ATM and recommendation for AHS are documented. The lessons learned and recommendations are more technical in nature than institutional or society. This Precursor Systems Analys
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The main emphasis of the Lateral and Longitudinal Control analysis was directed toward (1) a detailed review and study of the various technologies that may be utilized to provide sensors for lateral position measurement and longitudinal headway, and (2) a rather detailed digital simulation of a longitudinal control loop including the vehicle, engin
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Entry/exit is one of the major components of highway transportation service. Some might say it is the most important component since it ties directly to origin and destination (OD) pairs, as airline service is tied to city pairs and airport capacity. Entry/exit capacity can dictate a freeway system capacity. As we increase the freeway cruise lane c
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