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 laboratory investigation was instituted to determine the feasibility of increasing the design mixing temperature for hot-mix asphaltic concrete. Based on data obtained from modified thin film oven tests, it appears that the upper design limit could be increased to 300°F without appreciably affecting the durability of the asphalts studied. The
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Aderhold, J. W. (1972). An investigation of the effects of elevated mixing temperatures on the properties of asphalt cement (Report No. VHRC 71-R22). Virginia Transportation Research Council (VTRC). https://rosap.ntl.bts.gov/view/dot/19888
Aderhold, J. Wayne. An investigation of the effects of elevated mixing temperatures on the properties of asphalt cement. Report no. VHRC 71-R22. Virginia Transportation Research Council (VTRC), 1972. https://rosap.ntl.bts.gov/view/dot/19888.
Aderhold, J. Wayne An investigation of the effects of elevated mixing temperatures on the properties of asphalt cement. Virginia Transportation Research Council (VTRC), 1972, Report no. VHRC 71-R22, ROSA P. https://rosap.ntl.bts.gov/view/dot/19888.
1. Fogs are significant contributors to multiple car accidents that often result in fatalities. 2. Systems that adequately abate fogs or lighting systems that provide minimum visibility requirements have not evolved. 3. Most abatement techniques stem directly from methods used at airports. It is well to use methods already developed but the roadway
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Creech, M. F. (1972). Fog : a review of the literature pertaining to highway problems and possible solutions (Report No. VHRC 72-R2). Virginia Transportation Research Council (VTRC). https://rosap.ntl.bts.gov/view/dot/20061
Creech, Marion F. Fog : a review of the literature pertaining to highway problems and possible solutions. Report no. VHRC 72-R2. Virginia Transportation Research Council (VTRC), 1972. https://rosap.ntl.bts.gov/view/dot/20061.
Creech, Marion F Fog : a review of the literature pertaining to highway problems and possible solutions. Virginia Transportation Research Council (VTRC), 1972, Report no. VHRC 72-R2, ROSA P. https://rosap.ntl.bts.gov/view/dot/20061.
This primer was directed to the district and resident engineers of the Virginia Department of Highways, who are responsible for conducting highway public hearings, and to the environmental specialists of the Department's Environmental Quality Division, who are responsible for the Department's work in noise pollution. The purpose of the primer was t
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Noble, David F Primer on noise. Virginia Transportation Research Council (VTRC), 1972, Report no. VHRC 71-R20, ROSA P. https://rosap.ntl.bts.gov/view/dot/20060.
Vaswani, N. K. (1972). Recommended design method for flexible pavements in Virginia (Report No. VHRC 71-R26). Virginia Transportation Research Council (VTRC). https://rosap.ntl.bts.gov/view/dot/19833
Vaswani, N. K. Recommended design method for flexible pavements in Virginia. Report no. VHRC 71-R26. Virginia Transportation Research Council (VTRC), 1972. https://rosap.ntl.bts.gov/view/dot/19833.
Vaswani, N. K Recommended design method for flexible pavements in Virginia. Virginia Transportation Research Council (VTRC), 1972, Report no. VHRC 71-R26, ROSA P. https://rosap.ntl.bts.gov/view/dot/19833.
An investigation was initiated in the spring of 1972 to develop surface mixes with high skid resistance for use at special locations. The porous friction course will hopefully provide high skid coefficients where water drainage and hydroplaning may be problems. The porous friction course has sufficient voids and channels to allow water to drain to
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Maupin, G. W. (1972). Installation report on porous friction course hot plant mix (Report No. VHRC 72-R11). Virginia Transportation Research Council (VTRC). https://rosap.ntl.bts.gov/view/dot/20067
Maupin, G. W. Installation report on porous friction course hot plant mix. Report no. VHRC 72-R11. Virginia Transportation Research Council (VTRC), 1972. https://rosap.ntl.bts.gov/view/dot/20067.
Maupin, G. W Installation report on porous friction course hot plant mix. Virginia Transportation Research Council (VTRC), 1972, Report no. VHRC 72-R11, ROSA P. https://rosap.ntl.bts.gov/view/dot/20067.
Based on the review of previous Council reports, a strategy for the use and control of potentially reactive carbonate rocks is discussed in this report, which lists the previous reports in a bibliography. Specifically, this report discusses an evaluation of four test methods using a suite of 22 rocks exhibiting a wide range of potential expansion a
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Newlon, H., Ozol, M. A., & Sherwood, W. C. (1972). An evaluation of several methods for detecting alkali-carbonate reaction (Report No. VHRC 71-R331). Virginia Transportation Research Council (VTRC). https://rosap.ntl.bts.gov/view/dot/19086
Newlon, Howard, Michael A., Ozol, and W. Cullen Sherwood. An evaluation of several methods for detecting alkali-carbonate reaction. Report no. VHRC 71-R331. Virginia Transportation Research Council (VTRC), 1972. https://rosap.ntl.bts.gov/view/dot/19086.
Newlon, Howard, et al. An evaluation of several methods for detecting alkali-carbonate reaction. Virginia Transportation Research Council (VTRC), 1972, Report no. VHRC 71-R331, ROSA P. https://rosap.ntl.bts.gov/view/dot/19086.
In Virginia stripping has occurred when certain of the acidic silicate rocks have been used as aggregate in bituminous paving. The purpose of this project was to discover which kinds of silicate aggregate would be most apt to remain well bonded in bituminous mixes and which would be more apt to have a poor bond and become stripped from their binder
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Walker, H. N. (1972). The stripping of penetration 85-100 asphalt from silicate aggregate rocks : a laboratory study (Report No. VHRC 71-R29). Virginia Transportation Research Council (VTRC). https://rosap.ntl.bts.gov/view/dot/19862
Walker, Hollis N. The stripping of penetration 85-100 asphalt from silicate aggregate rocks : a laboratory study. Report no. VHRC 71-R29. Virginia Transportation Research Council (VTRC), 1972. https://rosap.ntl.bts.gov/view/dot/19862.
Walker, Hollis N The stripping of penetration 85-100 asphalt from silicate aggregate rocks : a laboratory study. Virginia Transportation Research Council (VTRC), 1972, Report no. VHRC 71-R29, ROSA P. https://rosap.ntl.bts.gov/view/dot/19862.
Presented are the results of a field evaluation of the various types of the General Tire Transflex joint known to be in use in Virginia. An effort was made, whenever possible, to qualitatively evaluate the joints with respect to their (1) watertightness, (2) ability to reject debris, (3) stability and noise producing characteristics under traffic i
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Hilton, M. H. (1972). A field evaluation of Transflex bridge joint performance (Report No. VHRC 72-R16). Virginia Transportation Research Council (VTRC). https://rosap.ntl.bts.gov/view/dot/19900
Hilton, Marvin H. A field evaluation of Transflex bridge joint performance. Report no. VHRC 72-R16. Virginia Transportation Research Council (VTRC), 1972. https://rosap.ntl.bts.gov/view/dot/19900.
Hilton, Marvin H A field evaluation of Transflex bridge joint performance. Virginia Transportation Research Council (VTRC), 1972, Report no. VHRC 72-R16, ROSA P. https://rosap.ntl.bts.gov/view/dot/19900.
This report presents an assessment of the impact of a proposed section of Interstate 66 on the quality of the air in the immediate area of the project and in adjacent areas. The proposed project begins with an extension of existing I-66 at the interchange on I-495 in Fairfax County, passes through Arlington County, and terminates near the Key Bridg
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Carpenter, W. A., & Clemeña, G. G. (1972). Assessment of Air Quality Impact of a Proposed Section of Interstate 66 (Report No. VHRC 71-R24). Virginia Transportation Research Council (VTRC). https://rosap.ntl.bts.gov/view/dot/19953
Carpenter, William A., and Gerardo G. Clemeña. Assessment of Air Quality Impact of a Proposed Section of Interstate 66. Report no. VHRC 71-R24. Virginia Transportation Research Council (VTRC), 1972. https://rosap.ntl.bts.gov/view/dot/19953.
Carpenter, William A.,, and Gerardo G. Clemeña Assessment of Air Quality Impact of a Proposed Section of Interstate 66. Virginia Transportation Research Council (VTRC), 1972, Report no. VHRC 71-R24, ROSA P. https://rosap.ntl.bts.gov/view/dot/19953.
The purpose of the study was to determine whether infrared technology could be used in Virginia to delineate areas with soils having a high moisture content. The study was conducted in cooperation with the FHWA, and personnel of the University of Michigan were engaged as consultants for the remote sensing flights. Located in Augusta County, Virgini
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Noble, D. F. (1972). Virginia's use of remote sensing in the preliminary aerial survey--highway planning stage (Report No. VHRC 71-R19). Virginia Transportation Research Council (VTRC). https://rosap.ntl.bts.gov/view/dot/19973
Noble, David F. Virginia's use of remote sensing in the preliminary aerial survey--highway planning stage. Report no. VHRC 71-R19. Virginia Transportation Research Council (VTRC), 1972. https://rosap.ntl.bts.gov/view/dot/19973.
Noble, David F Virginia's use of remote sensing in the preliminary aerial survey--highway planning stage. Virginia Transportation Research Council (VTRC), 1972, Report no. VHRC 71-R19, ROSA P. https://rosap.ntl.bts.gov/view/dot/19973.
Sixteen instrument-rated pilots, eight of whom were very experienced professional aviators, flew instrument landing system approaches in a Cessna 172 under simulated instrument flight conditions while sober and while under the influence of 40, 80, and 120 mg% of blood ethyl alcohol. Each pilot flew four approaches to minimums on each of two occasio
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Billings, C. E., Wick, R. L., Gerke, R. J., & Chase, R. C. (1972). The effects of alcohol on pilot performance during instrument flight (Report No. FAA-AM-72-4). Civil Aerospace Medical Institute. https://rosap.ntl.bts.gov/view/dot/20983
Billings, Charles E., Robert L. Wick, Ralph J. Gerke, and Robert C. Chase. The effects of alcohol on pilot performance during instrument flight. Report no. FAA-AM-72-4. Civil Aerospace Medical Institute, 1972. https://rosap.ntl.bts.gov/view/dot/20983.
Billings, Charles E., et al. The effects of alcohol on pilot performance during instrument flight. Civil Aerospace Medical Institute, 1972, Report no. FAA-AM-72-4, ROSA P. https://rosap.ntl.bts.gov/view/dot/20983.
The need for controlling construction induced sediment to keep it from entering the nation's waterways is generally accepted. Efficient means and methods for sediment control, however, are not simple, and in some cases have not been developed to a high degree. A look at the overall picture of sediment control shows two distinct approaches: (1) Cont
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Sherwood, W. C. (1972). Design criteria for sediment basins (Report No. VHRC 72-R5). Virginia Transportation Research Council (VTRC). https://rosap.ntl.bts.gov/view/dot/20179
Sherwood, W. Cullen. Design criteria for sediment basins. Report no. VHRC 72-R5. Virginia Transportation Research Council (VTRC), 1972. https://rosap.ntl.bts.gov/view/dot/20179.
Sherwood, W. Cullen Design criteria for sediment basins. Virginia Transportation Research Council (VTRC), 1972, Report no. VHRC 72-R5, ROSA P. https://rosap.ntl.bts.gov/view/dot/20179.
Traffic safety research was noted to have been unable to produce any empirical evidence that the introduction of a point system would affect, either negatively or positively, traffic accident statistics. In view of this absence of evidence, the similarity between Virginia's record-keeping procedures and one type of point system, and the admitted ad
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Micas, S. L. (1972). The point system for driver license administration : a viable alternative for Virginia? (Report No. VHRC 71-R38). Virginia Transportation Research Council (VTRC). https://rosap.ntl.bts.gov/view/dot/19262
Micas, Steven L. The point system for driver license administration : a viable alternative for Virginia?. Report no. VHRC 71-R38. Virginia Transportation Research Council (VTRC), 1972. https://rosap.ntl.bts.gov/view/dot/19262.
Micas, Steven L The point system for driver license administration : a viable alternative for Virginia?. Virginia Transportation Research Council (VTRC), 1972, Report no. VHRC 71-R38, ROSA P. https://rosap.ntl.bts.gov/view/dot/19262.
A passenger car mounted PCA roadmeter has been correlated with the BPR roughometer used for road roughness testing in Virginia for many years. The results showed a good correlation and that the roadmeter is capable of excellent reproducibility. Roadmeter (Rm) and roughometer (R) roughness are related by the equation R=1.14Rm+25. A temperature corre
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McGhee, K. H., & Gunn, R. W. (1972). Roadmeter roughness testing in Virginia (Report No. VHRC 71-R23). Virginia Transportation Research Council (VTRC). https://rosap.ntl.bts.gov/view/dot/19950
McGhee, Kenneth H and R. W Gunn. Roadmeter roughness testing in Virginia. Report no. VHRC 71-R23. Virginia Transportation Research Council (VTRC), 1972. https://rosap.ntl.bts.gov/view/dot/19950.
McGhee, Kenneth H, and R. W Gunn Roadmeter roughness testing in Virginia. Virginia Transportation Research Council (VTRC), 1972, Report no. VHRC 71-R23, ROSA P. https://rosap.ntl.bts.gov/view/dot/19950.
Pavement information consisting of type of pavement, date of construction, methods used in construction, and types and sources of materials have been recorded in Virginia since the 1930's. Because there has been no effective system for filing the information and no one has been assigned the overall responsibility for supervising the collection, sto
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Creech, M. F. (1972). Systematizing pavement surface information for the highways of Virginia (Report No. VHRC 71-R37). Virginia Transportation Research Council (VTRC). https://rosap.ntl.bts.gov/view/dot/19787
Creech, Marion F. Systematizing pavement surface information for the highways of Virginia. Report no. VHRC 71-R37. Virginia Transportation Research Council (VTRC), 1972. https://rosap.ntl.bts.gov/view/dot/19787.
Creech, Marion F Systematizing pavement surface information for the highways of Virginia. Virginia Transportation Research Council (VTRC), 1972, Report no. VHRC 71-R37, ROSA P. https://rosap.ntl.bts.gov/view/dot/19787.
The correlation between asphaltic concrete tensile stiffness and fatigue life was determined in the laboratory. Constant strain fatigue tests were utilized and indirect tensile tests were selected because of their simplicity and applicability. Four asphaltic concrete mixes of different stiffnesses were tested under constant strain fatigue and indir
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Maupin, G. W. (1972). Relationship of fatigue to the tensile stiffness of asphaltic concrete : final report on phase 1, laboratory investigation (Report No. VHRC 70-R41). Virginia Transportation Research Council (VTRC). https://rosap.ntl.bts.gov/view/dot/19030
Maupin, G. W.. Relationship of fatigue to the tensile stiffness of asphaltic concrete : final report on phase 1, laboratory investigation. Report no. VHRC 70-R41. Virginia Transportation Research Council (VTRC), 1972. https://rosap.ntl.bts.gov/view/dot/19030.
Maupin, G. W. Relationship of fatigue to the tensile stiffness of asphaltic concrete : final report on phase 1, laboratory investigation. Virginia Transportation Research Council (VTRC), 1972, Report no. VHRC 70-R41, ROSA P. https://rosap.ntl.bts.gov/view/dot/19030.
Siegel, H. J. (1972). Feasibility of utilizing highway bridges to weigh vehicles in motion : Vol.3, Strain gages at bridge bearings. United States. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/30256
Siegel, Herman J.. Feasibility of utilizing highway bridges to weigh vehicles in motion : Vol.3, Strain gages at bridge bearings. United States. Federal Highway Administration, 1972. https://rosap.ntl.bts.gov/view/dot/30256.
Siegel, Herman J. Feasibility of utilizing highway bridges to weigh vehicles in motion : Vol.3, Strain gages at bridge bearings. United States. Federal Highway Administration, 1972, ROSA P. https://rosap.ntl.bts.gov/view/dot/30256.
This publication brings together annual series of selected statistical tabulations relating to highway transportation in three major areas: (1) Highway use-the ownership and operation of motor vehicles; (2) highway finance - the receipts and expenditures for highways by public agencies; and 13) the highway plant - the extent and changing characteri
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United States. Federal Highway Administration (1972). Highway Statistics: 1972 [Full report]. United States. Federal Highway Administration. https://rosap.ntl.bts.gov/view/dot/8401
United States. Federal Highway Administration. Highway Statistics: 1972 [Full report]. United States. Federal Highway Administration, 1972. https://rosap.ntl.bts.gov/view/dot/8401.
United States. Federal Highway Administration Highway Statistics: 1972 [Full report]. United States. Federal Highway Administration, 1972, ROSA P. https://rosap.ntl.bts.gov/view/dot/8401.
The use of a weak sandwich layer in a four-layer system is common in the construction of flexible pavements, but the use of a sandwich layer in a three-layer system is in the experimental stage in Virginia. Theoretical and field studies have been carried out to determine how sandwiched layers affect the design and performance of pavement systems. I
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Vaswani, N. K. (1972). Evaluation of sandwich layer system of flexible pavements in Virginia (Report No. VHRC 71-R30). Virginia Transportation Research Council (VTRC). https://rosap.ntl.bts.gov/view/dot/18956
Vaswani, N. K. Evaluation of sandwich layer system of flexible pavements in Virginia. Report no. VHRC 71-R30. Virginia Transportation Research Council (VTRC), 1972. https://rosap.ntl.bts.gov/view/dot/18956.
Vaswani, N. K Evaluation of sandwich layer system of flexible pavements in Virginia. Virginia Transportation Research Council (VTRC), 1972, Report no. VHRC 71-R30, ROSA P. https://rosap.ntl.bts.gov/view/dot/18956.
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