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.
This report is intended to document the empirical equation for predicting pavement deflections given in Section 3.2 of Research Report 32-11, "A Systems Approach to the Flexible Pavement Design Problem"(l)• The equation predicts deflections measured by the Dynaflect*, given certain design parameters for the pavement. The equation was derived in two
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Scrivner, F. H., & Moore, W. M. (1968). An Empirical Equation for Predicting Pavement Deflections (Report No. 32-12). Texas Transportation Institute. Texas A&M University. https://rosap.ntl.bts.gov/view/dot/84051
Scrivner, F. H. and William M. Moore. An Empirical Equation for Predicting Pavement Deflections. Report no. 32-12. Texas Transportation Institute. Texas A&M University, 1968. https://rosap.ntl.bts.gov/view/dot/84051.
Scrivner, F. H., and William M. Moore An Empirical Equation for Predicting Pavement Deflections. Texas Transportation Institute. Texas A&M University, 1968, Report no. 32-12, ROSA P. https://rosap.ntl.bts.gov/view/dot/84051.
This study is part of an overall research program designed to provide information to the Highway Department to assist them in their decision- making concerning new highways. The purpose of this particular study was to determine the influence that the Interstate Highway System of Texas has had on the location of industrial activity within geographic
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Richards, H. A., Miller, J. P., & Allio, W. H. (1968). A Study of Interstate Highways, Frontage Roads and Industry Location (Report No. 66-2 (Final)). Texas Transportation Institute. Texas A&M University. https://rosap.ntl.bts.gov/view/dot/84427
Richards, Hoy A., James P. Miller, and William H. Allio. A Study of Interstate Highways, Frontage Roads and Industry Location. Report no. 66-2 (Final). Texas Transportation Institute. Texas A&M University, 1968. https://rosap.ntl.bts.gov/view/dot/84427.
Richards, Hoy A., et al. A Study of Interstate Highways, Frontage Roads and Industry Location. Texas Transportation Institute. Texas A&M University, 1968, Report no. 66-2 (Final), ROSA P. https://rosap.ntl.bts.gov/view/dot/84427.
United States. Department of Transportation. Urban Mass Transit Administration
1968-09-12
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PDF
Press release for the Urban Mass Transportation Administration.
United States. Department of Transportation. Urban Mass Transit Administration (1968). Department of Transportation News: Urban Mass Transportation Administration. United States. Department of Transportation. Urban Mass Transportation Administration. https://rosap.ntl.bts.gov/view/dot/80502
United States. Department of Transportation. Urban Mass Transit Administration. Department of Transportation News: Urban Mass Transportation Administration. United States. Department of Transportation. Urban Mass Transportation Administration, 1968. https://rosap.ntl.bts.gov/view/dot/80502.
United States. Department of Transportation. Urban Mass Transit Administration Department of Transportation News: Urban Mass Transportation Administration. United States. Department of Transportation. Urban Mass Transportation Administration, 1968, ROSA P. https://rosap.ntl.bts.gov/view/dot/80502.
Increased overwater flight has resulted in an increase in both military ejections and civil crash landings in water, 78 general aviation water accidents occurring in 1965. The objective of the study was to determine mechanisms of gross trauma in non-penetrating fatal water impact.The method involved analysis of necropsy data on 169 fatal (52 female
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Snyder, R. G., & Snow, C. C. (1968). Fatal injuries resulting from extreme water impact (Report No. AM 68-19). Civil Aerospace Medical Institute. https://rosap.ntl.bts.gov/view/dot/20862
Snyder, Richard G. and Clyde C. Snow. Fatal injuries resulting from extreme water impact. Report no. AM 68-19. Civil Aerospace Medical Institute, 1968. https://rosap.ntl.bts.gov/view/dot/20862.
Snyder, Richard G., and Clyde C. Snow Fatal injuries resulting from extreme water impact. Civil Aerospace Medical Institute, 1968, Report no. AM 68-19, ROSA P. https://rosap.ntl.bts.gov/view/dot/20862.
The study concerns the experimental use of several commercially-published aptitude tests and a determination of their validity as predictors of training-performance grades for more than 300 Marines and over 600 Naval students who entered a basic air-traffic-controller (ATC) training course. The results indicated that a composite score involving onl
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Cobb, B. B. (1968). A comparative study of air traffic trainee aptitude-test measures involving Navy, Marine Corps and FAA controllers (Report No. AM 68-14). Civil Aerospace Medical Institute. https://rosap.ntl.bts.gov/view/dot/20853
Cobb, Bart B.. A comparative study of air traffic trainee aptitude-test measures involving Navy, Marine Corps and FAA controllers. Report no. AM 68-14. Civil Aerospace Medical Institute, 1968. https://rosap.ntl.bts.gov/view/dot/20853.
Cobb, Bart B. A comparative study of air traffic trainee aptitude-test measures involving Navy, Marine Corps and FAA controllers. Civil Aerospace Medical Institute, 1968, Report no. AM 68-14, ROSA P. https://rosap.ntl.bts.gov/view/dot/20853.
The recent use of strobe lights in aviation suggests the possibility of using temporal patterns of short duration flashes as information-carrying signals. Under night flight conditions, two-flash thresholds were obtained using a two-interval, temporal forced-choice technique with foveally fixated circular targets varying in luminance and area. For
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Lewis, M. F. (1968). Two-flash thresholds as a function of flash luminance and area (Report No. AM 68-20). Civil Aerospace Medical Institute. https://rosap.ntl.bts.gov/view/dot/20865
Lewis, Mark F.. Two-flash thresholds as a function of flash luminance and area. Report no. AM 68-20. Civil Aerospace Medical Institute, 1968. https://rosap.ntl.bts.gov/view/dot/20865.
Lewis, Mark F. Two-flash thresholds as a function of flash luminance and area. Civil Aerospace Medical Institute, 1968, Report no. AM 68-20, ROSA P. https://rosap.ntl.bts.gov/view/dot/20865.
Drugs and alcohol are frequently cited as major causes of automobile accidents. Druges are rarely reported as a cause of aircraft accidents. This is due to the relatively infrequent search for their presence and to unprecise definition of levels at which most of them begin to impair pilot performance.
Dille, J. R., & Mohler, S. R. (1968). Drug and toxic hazards in general aviation (Report No. AM 68-16). Civil Aerospace Medical Institute. https://rosap.ntl.bts.gov/view/dot/20856
Dille, J. Robert and Stanley R. Mohler. Drug and toxic hazards in general aviation. Report no. AM 68-16. Civil Aerospace Medical Institute, 1968. https://rosap.ntl.bts.gov/view/dot/20856.
Dille, J. Robert, and Stanley R. Mohler Drug and toxic hazards in general aviation. Civil Aerospace Medical Institute, 1968, Report no. AM 68-16, ROSA P. https://rosap.ntl.bts.gov/view/dot/20856.
This phase of the research is concerned with the treatment of bridge decks to prevent the initiation of surface deterioration or to attenuate deterioration that has already begun. It seeks a solution to the problem of determining what materials are effective as surface treatments in the prevention and/or spread of damage; the manner, extent, and sc
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Meyer, A. H., & Furr, H. L. (1968). Reinforced Concrete Bridge Deck Deterioration: Diagnosis, Treatment, and Repair, Part Two: Treatment (Report No. 130-2). Texas Transportation Institute. Texas A&M University. https://rosap.ntl.bts.gov/view/dot/84572
Meyer, Alvin H. and Howard L. Furr. Reinforced Concrete Bridge Deck Deterioration: Diagnosis, Treatment, and Repair, Part Two: Treatment. Report no. 130-2. Texas Transportation Institute. Texas A&M University, 1968. https://rosap.ntl.bts.gov/view/dot/84572.
Meyer, Alvin H., and Howard L. Furr Reinforced Concrete Bridge Deck Deterioration: Diagnosis, Treatment, and Repair, Part Two: Treatment. Texas Transportation Institute. Texas A&M University, 1968, Report no. 130-2, ROSA P. https://rosap.ntl.bts.gov/view/dot/84572.
Pilot response to peripheral vision cues relating to aircraft bank angle was studied during instrument flight in two simulators representing (1) a conventional, medium weight, piston engine airliner, and (2) a heavy, jet engine, sweptwing transport. There was no statistically significant difference found between pilot performance in the dissimilar
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Hasbrook, A. H. (1968). A comparison of effects of peripheral vision cues on pilot performance during instrument flight in dissimilar aircraft simulators (Report No. AM 68-22). Civil Aerospace Medical Institute. https://rosap.ntl.bts.gov/view/dot/20870
Hasbrook, A. Howard. A comparison of effects of peripheral vision cues on pilot performance during instrument flight in dissimilar aircraft simulators. Report no. AM 68-22. Civil Aerospace Medical Institute, 1968. https://rosap.ntl.bts.gov/view/dot/20870.
Hasbrook, A. Howard A comparison of effects of peripheral vision cues on pilot performance during instrument flight in dissimilar aircraft simulators. Civil Aerospace Medical Institute, 1968, Report no. AM 68-22, ROSA P. https://rosap.ntl.bts.gov/view/dot/20870.
Fifteen of the most popular single-engine general-aviation light aircraft were tested for the noise intensity present during normal cruising operations at 2000, and 10,000 feet MSL (mean sea level). In comparison with currently accepted DRC (damage-risk criterion) curves, the noise levels found even in the quietest plane tested could be damaging. H
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Tobias, J. V. (1968). Cockpit noise intensity : fifteen single-engine light aircraft (Report No. AM 68-21). Civil Aerospace Medical Institute. https://rosap.ntl.bts.gov/view/dot/20868
Tobias, Jerry V.. Cockpit noise intensity : fifteen single-engine light aircraft. Report no. AM 68-21. Civil Aerospace Medical Institute, 1968. https://rosap.ntl.bts.gov/view/dot/20868.
Tobias, Jerry V. Cockpit noise intensity : fifteen single-engine light aircraft. Civil Aerospace Medical Institute, 1968, Report no. AM 68-21, ROSA P. https://rosap.ntl.bts.gov/view/dot/20868.
In a study of 54 human subjects using three alcohol consumption levels and three simulated cabin conditions it was found that alcohol caused an increase in heart rate and an increase in skin temperature. Internal body temperature was lower with alcohol but did increase as blood alcohol levels decreased. The performance tests used apparently were no
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Higgins, E. A., Davis, A. W., Vaughan, J. A., Funkhouser, G. E., & Galerston, E. M. (1968). The effects of alcohol at three simulated aircraft cabin conditions (Report No. AM 68-18). Civil Aerospace Medical Institute. https://rosap.ntl.bts.gov/view/dot/20860
Higgins, E. Arnold, Audie W. Davis, John A. Vaughan, Gordon E. Funkhouser, and Elinore M. Galerston. The effects of alcohol at three simulated aircraft cabin conditions. Report no. AM 68-18. Civil Aerospace Medical Institute, 1968. https://rosap.ntl.bts.gov/view/dot/20860.
Higgins, E. Arnold, et al. The effects of alcohol at three simulated aircraft cabin conditions. Civil Aerospace Medical Institute, 1968, Report no. AM 68-18, ROSA P. https://rosap.ntl.bts.gov/view/dot/20860.
In aviation occupations, performance impairment under stress conditions is particularly undesirable. However, individuals may show differing amounts of impairment under stress, and the reasons for these differences are not clear. The present study explored the extent to which individual differences in previously expressed fear of a specific stress
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Thackray, R. I., & Pearson, D. W. (1968). The effects of cognitive appraisal of stress on heart rate and task performance (Report No. AM 68-17). Civil Aerospace Medical Institute. https://rosap.ntl.bts.gov/view/dot/20858
Thackray, Richard I. and David W. Pearson. The effects of cognitive appraisal of stress on heart rate and task performance. Report no. AM 68-17. Civil Aerospace Medical Institute, 1968. https://rosap.ntl.bts.gov/view/dot/20858.
Thackray, Richard I., and David W. Pearson The effects of cognitive appraisal of stress on heart rate and task performance. Civil Aerospace Medical Institute, 1968, Report no. AM 68-17, ROSA P. https://rosap.ntl.bts.gov/view/dot/20858.
This paper reports the results of three experimental programs conducted on synthetic aggregates; physical durability, chemical durability, and mechanical durability. In the physical durability program, five selected commercially produced and eight TTI kiln-produced lightweight coarse aggregates were investigated. Absorption characteristics and poro
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Buth, E., Blank, H. R., & McKeen, R. G. (1968). Performance Studies of Synthetic Aggregate Concrete (Report No. 81-6). Texas Transportation Institute. Texas A&M University. https://rosap.ntl.bts.gov/view/dot/84492
Buth, Eugene, Horace R. Blank, and R. G. McKeen. Performance Studies of Synthetic Aggregate Concrete. Report no. 81-6. Texas Transportation Institute. Texas A&M University, 1968. https://rosap.ntl.bts.gov/view/dot/84492.
Buth, Eugene, et al. Performance Studies of Synthetic Aggregate Concrete. Texas Transportation Institute. Texas A&M University, 1968, Report no. 81-6, ROSA P. https://rosap.ntl.bts.gov/view/dot/84492.
This project involves the design, construction, and testing in thelaboratory and field of instrumentation capable of measuring the lateralearth pressure along a drilled shaft.A good deal of work" has been done concerning the development of pressuretransducers designed to measure stresses in an earth mass. Consequently,these studies have produced th
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Reese, L. C., Brown, J. C., & Dalrymple, H. H. (1968). Instrumentation for measurements of lateral Earth pressure in drilled shafts (Report No. Research report number 89-2, research project 3-5-65-89). University of Texas at Austin. Center for Highway Research. https://rosap.ntl.bts.gov/view/dot/31474
Reese, Lymon C., James Crozier Brown, and Harold H. Dalrymple. Instrumentation for measurements of lateral Earth pressure in drilled shafts. Report no. Research report number 89-2, research project 3-5-65-89. University of Texas at Austin. Center for Highway Research, 1968. https://rosap.ntl.bts.gov/view/dot/31474.
Reese, Lymon C., et al. Instrumentation for measurements of lateral Earth pressure in drilled shafts. University of Texas at Austin. Center for Highway Research, 1968, Report no. Research report number 89-2, research project 3-5-65-89, ROSA P. https://rosap.ntl.bts.gov/view/dot/31474.
Although the systems approach to design is usually thought of as having applications only in the field of hardware systems design, from whence it came, systems methodology and philosophy are also applicable to the design of computer software systems. The NGI (Numeric Ground Image) Systems Design study is an example of the systems approach to the de
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Maxwell, D. A., & Turpin, R. D. (1968). Numeric Ground Image Systems Design (Report No. 120-1). Texas Transportation Institute. Texas A&M University. https://rosap.ntl.bts.gov/view/dot/84553
Maxwell, Donald A. and Robert D. Turpin. Numeric Ground Image Systems Design. Report no. 120-1. Texas Transportation Institute. Texas A&M University, 1968. https://rosap.ntl.bts.gov/view/dot/84553.
Maxwell, Donald A., and Robert D. Turpin Numeric Ground Image Systems Design. Texas Transportation Institute. Texas A&M University, 1968, Report no. 120-1, ROSA P. https://rosap.ntl.bts.gov/view/dot/84553.
The objectives of this study were; (1) to develop a computer program~ from a mathematical model, to be used in determining the dynamic response of light poles subjected to steady winds, (2) to determine the dynamic response of two typical light poles with typical luminaires attached for wind velocities between 0 and 50 miles per hour, and (3) from
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Ross Jr., H. E., Edwards, T. C., & Babb, G. R. (1968). Fatigue Analysis of the Cast Aluminum Base (Report No. 75-11). Texas Transportation Institute. Texas A&M University. https://rosap.ntl.bts.gov/view/dot/84485
Ross Jr., Hayes E., Thomas C. Edwards, and Gerald R. Babb. Fatigue Analysis of the Cast Aluminum Base. Report no. 75-11. Texas Transportation Institute. Texas A&M University, 1968. https://rosap.ntl.bts.gov/view/dot/84485.
Ross Jr., Hayes E., et al. Fatigue Analysis of the Cast Aluminum Base. Texas Transportation Institute. Texas A&M University, 1968, Report no. 75-11, ROSA P. https://rosap.ntl.bts.gov/view/dot/84485.
The objective of this phase of Research Study 2-8-63-60 was the analysis of trip generation by traffic assignment zones. Particular items of concern were the relative efficiency of different independent variables used for trip estimates, the effect of stratification of trips by purpose and/or direction, and the comparison of multiple regression wit
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Goodknight, J. C. (1968). A Partial Analysis of Trip Generation (Report No. 60-12). Texas Transportation Institute. Texas A&M University. https://rosap.ntl.bts.gov/view/dot/84415
Goodknight, John C.. A Partial Analysis of Trip Generation. Report no. 60-12. Texas Transportation Institute. Texas A&M University, 1968. https://rosap.ntl.bts.gov/view/dot/84415.
Goodknight, John C. A Partial Analysis of Trip Generation. Texas Transportation Institute. Texas A&M University, 1968, Report no. 60-12, ROSA P. https://rosap.ntl.bts.gov/view/dot/84415.
This publication consists of a state-of-the-art report on maintenance of bituminous highway surfaces in the state of Texas. The publication reflects a review of the literature, and a field survey of materials, equipment, and techniques used for typical bituminous surface maintenance operations. Descriptions of the successful maintenance operations
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Hargett, E. R. (1968). A Study of Bituminous Surface Maintenance in Texas (Report No. 129-1). Texas Transportation Institute. Texas A&M University. https://rosap.ntl.bts.gov/view/dot/84562
Hargett, Emil R.. A Study of Bituminous Surface Maintenance in Texas. Report no. 129-1. Texas Transportation Institute. Texas A&M University, 1968. https://rosap.ntl.bts.gov/view/dot/84562.
Hargett, Emil R. A Study of Bituminous Surface Maintenance in Texas. Texas Transportation Institute. Texas A&M University, 1968, Report no. 129-1, ROSA P. https://rosap.ntl.bts.gov/view/dot/84562.
This study was concerned with calibrating and testing the gravity model trip distribution using a small sized urban area - Waco, Texas. An analysis of trip purpose stratification was performed, and it was concluded that no practical differences resulted between a seven purpose, a three purpose, and a single purpose model. Upon converting production
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Long, G. D. (1968). An Evaluation of the Gravity Model Trip Distribution (Report No. 60-13). Texas Transportation Institute. Texas A&M University. https://rosap.ntl.bts.gov/view/dot/84416
Long, Gary D.. An Evaluation of the Gravity Model Trip Distribution. Report no. 60-13. Texas Transportation Institute. Texas A&M University, 1968. https://rosap.ntl.bts.gov/view/dot/84416.
Long, Gary D. An Evaluation of the Gravity Model Trip Distribution. Texas Transportation Institute. Texas A&M University, 1968, Report no. 60-13, ROSA P. https://rosap.ntl.bts.gov/view/dot/84416.
This report concerns itself with the latter objective of estimating static load hearing capacity of piling. This paper describes how the wave equation can be used to estimate the soil resistance acting on a pile at the time of driving. Knowing the soil resistance on the pile at the time of driving, one can then estimate the load bearing capacity by
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Lowery Jr, L. L., Edwards, T. C., & Hirsch, T. J. (1968). Use of the Wave Equation to Predict Soil Resistance on a Pile during Driving (Report No. 33-10). Texas Transportation Institute. Texas A&M University. https://rosap.ntl.bts.gov/view/dot/84081
Lowery Jr, Lee L., Thomas C. Edwards, and T. J. Hirsch. Use of the Wave Equation to Predict Soil Resistance on a Pile during Driving. Report no. 33-10. Texas Transportation Institute. Texas A&M University, 1968. https://rosap.ntl.bts.gov/view/dot/84081.
Lowery Jr, Lee L., et al. Use of the Wave Equation to Predict Soil Resistance on a Pile during Driving. Texas Transportation Institute. Texas A&M University, 1968, Report no. 33-10, ROSA P. https://rosap.ntl.bts.gov/view/dot/84081.
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