The Federal Highway Administration (FHWA) developed InfoTechnology™ to fill the knowledge gap between highway infrastructure practitioners/asset managers dealing with highway infrastructure performance challenges and researchers developing and refining nondestructive evaluation (NDE) technologies to support their efforts.
Concrete overlays leverage the investment already made in the existing pavement structure while potentially reducing the need for significant preservation activities and reducing lane closure durations. This case study summarizes the design, construction, and performance of bonded and unbonded concrete overlays on existing continuously reinforced c
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This brief summarizes an evaluation of the Federal Highway Administration's (FHWA's) investment in the truck platooning research project titled "Assessing the Feasibility of Deploying Partial Automation for Truck Platooning." This research project included two complementary subprojects, titled "Partial Automation for Truck Platooning" (PATP) and "D
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This report summarizes the key findings of the 2020 Intelligent Transportation Systems (ITS) Deployment Tracking Survey (DTS). Since 1997, the ITS Joint Program Office (JPO) has used the DTS on an ongoing basis to collect information about ITS deployment in metropolitan areas across the United States by surveying state and local transportation agen
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Traditional traffic counts have long been utilized by U.S. DOT, the states, and MPOs to determine volumes of traffic. Recent developments in connected technologies have provided the potential for probe-based, or passive, measurement of traffic volumes that combines information on specific vehicles and advanced analytics algorithms to estimate AADT
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Traffic management systems (TMSs) and their operating centers, traffic management centers, support real-time and offline functions, services, actions, and activities—as well as related tasks and decisions (e.g., administrative actions and condition reports). In this context, decision-support tools (DSTs) are not generally used as standalone solutio
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This report summarizes the Transit Management Survey findings of the 2020 Intelligent Transportation Systems (ITS) Deployment Tracking Surveys (DTS). Since 1997, the ITS Joint Program Office (JPO) has used the DTS on an ongoing basis to collect information about ITS deployment in metropolitan areas across the United States by surveying state and lo
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This is one of five case studies highlighting FHWA’s Every Day Counts initiative known as Targeted Overlay Pavement Solutions (TOPS). TOPS integrates innovative overlay procedures into practices to improve performance, lessen traffic impacts, and reduce the cost of pavement ownership. The New Jersey Department of Transportation (NJDOT) specifies hi
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This is one of five case studies highlighting FHWA’s Every Day Counts initiative known as Targeted Overlay Pavement Solutions (TOPS). The purpose of TOPS is to integrate innovative overlay procedures into practices to improve performance, lessen traffic impacts, and reduce the cost of pavement ownership. Highly modified asphalt (HiMA) mixtures cont
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United States. Department of Transportation. Federal Highway Administration. Office of Highway Policy Information
2021-11-01
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Traffic Volume Trends is a monthly report based on hourly traffic count data reported by the States. These data are collected at approximately 5,000 continuous traffic counting locations nationwide and are used to estimate the percent change in traffic for the current month compared with the same month in the previous year. Estimates are re-adjuste
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Lightweight concrete has been used successfully for the construction of bridges since soon after commercial production of lightweight aggregate began in the United States in 1920. Design provisions for lightweight concrete have been provided in AASHTO specifications for over 35 years. However, the material is not commonly used for bridge constructi
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2021-11-01
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FHWA Highway History Website Articles
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Until the 1960s, efforts to make highways safer had focused on two of the three keys in highway crashes: the road and the driver. The third element was the motor vehicle. For decades, the auto industry had supported efforts to make roads safer and drivers more skilled, while making vehicles bigger, more powerful, and faster. With a product to sell,
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Unbonded precast concrete overlays leverage the investment already made in the existing pavement structure while potentially reducing the need for significant preservation activities and reducing lane closure durations. This case study summarizes the design, construction, and performance of an unbonded precast concrete overlay of an existing jointe
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Continuously reinforced concrete (CRC) overlays leverage the investment already made in the existing pavement structure while potentially reducing the need for significant preservation activities and reducing lane closure durations. This case study summarizes the design, construction, and performance of an unbonded CRC overlay of an existing jointe
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Transportation is undergoing a period of significant change in the United States, evident by changes in transportation demand. Many factors influence transportation demand and in different ways. Some trends increase demand; some decrease demand; and others shift demand across modes, time of day, and geographies. Technological advances, coupled with
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This report summarizes the Freeway Management Survey findings of the 2020 Intelligent Transportation Systems (ITS) Deployment Tracking Surveys (DTS). Since 1997, the ITS Joint Program Office (JPO) has used the DTS on an ongoing basis to collect information about ITS deployment in metropolitan areas across the United States by surveying state and lo
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This report summarizes the Arterial Management Survey findings of the 2020 Intelligent Transportation Systems (ITS) Deployment Tracking Surveys (DTS). Since 1997, the ITS Joint Program Office (JPO) has used the DTS on an ongoing basis to collect information about ITS deployment in metropolitan areas across the United States by surveying state and l
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This document is a summary report of the Long-Term Bridge Performance (LTBP) Program’s data collection workshop held from February 25, 2021, through March 18, 2021.
This Ancillary Structures Inspection Reference Manual addresses inspection and maintenance issues related to a wide range of ancillary highway structures, with a focus on steel and aluminum structures. It provides inspection, maintenance and management personnel with the basic information they may need to manage and implement an ancillary structure
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This document summarizes how the United States Bureau of Reclamation (Reclamation) Sedimentation and River Hydraulics – Two Dimension (SRH-2D) software performed in the two-dimensional (2D) modeling benchmark tests developed by the United Kingdom's (UK) Joint Defra (Department for Environmental Food and Rural Affairs) Environment Agency. These test
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