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The US Transportation Collection consists of documents from across all transportation modes with specific focus on research reports from US DOT, state DOTs, and other transportation organizations. Bookmark this collection: https://rosap.ntl.bts.gov/collection_ust or https://doi.org/10.21949/1530857.

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Showing 29881 - 29900 of 35440 results
  • Louisiana Department of Transportation and Developments response to state concurrent resolution no 126 technical assistance report
    Louisiana Department of Transportation and Development's response to state concurrent resolution no. 126 : technical assistance report.
    Wilmot, Chester G.
    1994-12-01 | PDF
    The objectives of this study were to: 1) estimate the situation in year 2005 with the current TIMED program in operation, 2) estimate how long current TIMED funding must be extended to fully fund the projects listed in the TIMED program, and 3) estimate how much the current level of funding must be increased to complete the projects in the TIMED pr ...
  • Blinks Saccades and Fixation Pauses during Vigilance Task Performance I Time on Task
    Blinks, Saccades, and Fixation Pauses during Vigilance Task Performance. I. Time on Task
    Stern, John A. ;
    Boyer, Donna
    1994-12-01 | PDF
    In the future, operators of complex equipment will spend more time monitoring computer controlled devices rather than having hands on control of such equipment. The operator intervenes in system operation under "unusual" conditions or when there is a computer malfunction. The latter occurs relatively seldom. The operator's task thus becomes a "vigi ...
  • Situation Awareness Information Requirements for en Route Air Traffic Control
    Situation Awareness Information Requirements for en Route Air Traffic Control
    Endsley, Mica R. ;
    Rodgers, Mark D.
    1994-12-01 | PDF
    Situation awareness is presented as a fundamental requirement for effective air traffic control, forming the basis for controller decision making and performance. To develop a better understanding of the role of situation awareness in air traffic control, an analysis was performed to determine the specific situation awareness information requiremen ...
  • Acoustic Emission Monitoring of the Trunnion Shafts on Oregon DOT Bridge 1377A I5 Interstate Columbia River Bridge East Lift Span Portland Oregon
    Acoustic Emission Monitoring of the Trunnion Shafts on Oregon DOT Bridge #1377A : I-5 (Interstate) Columbia River Bridge East Lift Span, Portland, Oregon
    Prine, David W.
    1994-11-30 | PDF
    This report describes the results of applying acoustic emission (AE) testing to the trunnion shafts of the East Span of the I-5 Interstate Bridge. The tests were done at the request of Oregon DOT personnel to determine if active fatigue cracks are present in the subject shafts.
  • Maritime industry cargo preference lawsestimated costs and effects
    Maritime industry : cargo preference laws--estimated costs and effects
    United States. Government Accountability Office
    1994-11-30 | PDF
    Cargo preference laws require that certain government-owned or government-financed cargo shipped internationally (between a U.S. port and a foreign port) be carried on U.S.-flag vessels. Cargo subject to these laws is known as preference cargo. This report responds to a request from several Senators to provide information on (1) the cost to the fed ...
  • Comparative Study of Motor Carrier Services Programs
    Comparative Study of Motor Carrier Services Programs
    Mountain West Management
    1994-11-01 | PDF
    The Motor Carrier Services Division of the Montana Department of Transportation commissioned this study to provide factual, comparative information about the motor carrier programs of nine selected jurisdictions, focusing on the manner in which those jurisdictions deal with the mixture of regulatory and enforcement responsibilities with which they ...
    Supporting Files
  • Crew factors in flight operations II psychophysiological responses to shorthaul air transport operations
    Crew factors in flight operations II : psychophysiological responses to short-haul air transport operations
    Gander, P. H. ;
    Graeber, R. C.
    1994-11-01 | PDF
    This report is the second in a series on the physiological and psychological effects of flight operations on flight crews, and on the operational significance of these effects. This overview presents a comprehensive review and interpretation of the major findings. To document the psychophysiological effects of flying commercial short-haul air trans ...
  • NCDOT Bridge Policy
    NCDOT Bridge Policy
    North Carolina. Dept. of Transportation
    1994-11-01 | DOC
    NCDOT’s Bridge Policy establishes controlling design elements for new and reconstructed bridges on the state road system. It includes information to address sidewalks and bicycle facilities on bridges, including minimum handrail heights and sidewalk widths.
    Supporting Files
  • Mobility match study in Prince Georges County Maryland
    Mobility match study in Prince George's County, Maryland
    Sajovec, J. ;
    Lerner, A.
    1994-11-01 | PDF
    The primary focus of this study was to develop non-traditional transitalternatives to better serve the residents of Prince George's County. The studyidentified the transportation needs of the area, evaluated the applicabilty oftraditional and non-traditional transit options and developed an implementationplan for the selected transportation service ...
  • Evaluation of the use of strobe lights in the red lens of traffic signals technical assistance report
    Evaluation of the use of strobe lights in the red lens of traffic signals : technical assistance report.
    Cottrell, B.H., Jr
    1994-11-01 | PDF
    The objective of this study was to evaluate the effectiveness of using strobe lights in the red lens of traffic signals and, if appropriate, to recommend guidelines for their use. Strobe lights are used as a supplement to the red lens to draw the attention of drivers to a traffic signal. The Virginia Department of Transportation (VDOT) has 22 inter ...
  • A study of effectiveness of various shoulder rumble strips on highway safety
    A study of effectiveness of various shoulder rumble strips on highway safety.
    Chen, Chung S.
    1994-11-01 | PDF
    The Run-off-the-Road(ROTR)type of accidenthas beena predominantfactor in highwayfatalities nationwide. This situation has created a major concern and challenge for trafficmanagement within transportation departments. Shoulderrumble strips are new traffic controldevices for interstate and limited access roadway systems, which hold great potential fo ...
  • Ground penetrating radar survey of pavement thickness on MnRoad sections final report
    Ground penetrating radar survey of pavement thickness on Mn/Road sections : final report
    Maser, Kenneth R.
    1994-11-01 | PDF
    The research shows that highway speed horn antenna ground penetrating radar equipment and automated analysis software can accurately measure asphalt thickness. To accurately measure concrete and base thickness, lower speed ground coupled equipment also must be used. In the project, researchers collected radar data for pavement layer thickness at th ...
  • Commercial vehicle fleet management and information systems Technical memorandum 1 classification of fleet operations and selection of candidate case study fleets
    Commercial vehicle fleet management and information systems. Technical memorandum 1 : classification of fleet operations and selection of candidate case study fleets
    1994-11-01 | PDF
    The FHWA has commissioned this study to determine if there are fleet management needs that can be met through public sector involvement in the development of ITS systems. As part of this examination, this technical memorandum responds to Tasks A, B, and C. It examines how the need for ITS technology to improve fleet management varies with trucking ...
  • Verification of an Asphalt Aging Test and Development of Superior Recycling Agents and Asphalts
    Verification of an Asphalt Aging Test and Development of Superior Recycling Agents and Asphalts
    Davison, Richard R. ;
    Bullin, Jerry A.
    1994-11-01 | PDF
    This study included an in-depth investigation of asphalt oxidation hardening and accelerated aging tests to simulate asphalt hardening on the road. A very significant finding is that the effect of both temperature and pressure on hardening rates is very asphalt dependent, so that any test run at a single elevated temperature or pressure can be very ...
  • Examination of Air Entrainment Stability Factors of Pumped Concrete
    Examination of Air Entrainment Stability Factors of Pumped Concrete
    Macha, Ravi K. ;
    Zollinger, Dan G.
    1994-11-01 | PDF
    Pumping of concrete can be an economical and versatile method of placement. However, the mix design process of a pumpable concrete should account for factors related to pumping operations. Various difficulties may be experienced at the construction site, such as difficulty in pumping, blockages, air loss, and changes in the air void system of the c ...
  • HardwareSoftware Compatibility for Traffic ManagementIVHS Systems
    Hardware/Software Compatibility for Traffic Management/IVHS Systems
    Carvell, James D. Jr. ;
    Seymour, Edward J.
    1994-11-01 | PDF
    Traditional contracting and procurement procedures when applied to electronic data communication. computing, and software are not entirely appropriate for Advanced Traffic Management Systems, particularly if low-bid is the prime consideration for award. Purchasing and procurement legislation for the State of Texas and other states was reviewed to d ...
  • An Advanced RealTime Ramp Metering System ARMS The System Concept
    An Advanced Real-Time Ramp Metering System (ARMS): The System Concept
    Liu, Jyh-Charn S. ;
    Kim, Junguk L.
    1994-11-01 | PDF
    This research report presents a three-level, highway ramp-metering control scheme. In the first level, ramp controllers distributively compute ramp metering rates based on system-wide information. The system adapts quickly to changing traffic conditions; it is modular and allows scalable and robust implementation. The 0-D prediction algorithm is ad ...
  • Procedure for Classification of Coarse Aggregates Based on Properties Affecting Performance
    Procedure for Classification of Coarse Aggregates Based on Properties Affecting Performance
    Peapully, Srikrishna ;
    Zollinger, Dan G.
    1994-11-01 | PDF
    Coarse aggregate is the major constituent of both Portland cement concrete and asphalt concrete and is therefore widely used for construction purposes. A classification system for coarse aggregates would provide a systematic means for the identification of aggregates which could be used in the selection of aggregates for different construction acti ...
  • Field Performance of Maintenance Treatments Constructed with Reclaimed Asphalt Pavement RAP
    Field Performance of Maintenance Treatments Constructed with Reclaimed Asphalt Pavement (RAP)
    Estakhri, Cindy K.
    1994-11-01 | PDF
    In this study, RAP was blended with recycling emulsions and conventional maintenance mixtures in attempts to improve its field performance as a maintenance mixture. RAP was also mixed with stabilizers and used as a base material in maintenance projects. Several field experiments were constructed throughout the state, and this report documents their ...
  • Ramp Adaptive Metering Bottleneck Optimization RAMBO Users Manual
    Ramp Adaptive Metering Bottleneck Optimization (RAMBO) User’s Manual
    Messer, Carroll J. ;
    Thomadakis, Michael E.
    1994-11-01 | PDF
    This report is the user's manual for a software package called "RAMBO" (Ramp Adaptive Metering Bottleneck Optimi7.ation). RAMBO is the end product of research conducted within SPR research project 1232 entitled "Urban Highway Operations Research and Implementation." It was developed by the Texas Transportation Institute for the Texas Department of ...
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