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  • 1995-1999  (4)
  • Mobility and traffic research  (4)
Type of Medium
Publisher
Language
Years
  • 1995-1999  (4)
Year
FID
  • Mobility and traffic research  (4)
  • 1
    Online Resource
    Online Resource
    SAGE Publications ; 1997
    In:  Transportation Research Record: Journal of the Transportation Research Board Vol. 1581, No. 1 ( 1997-01), p. 37-46
    In: Transportation Research Record: Journal of the Transportation Research Board, SAGE Publications, Vol. 1581, No. 1 ( 1997-01), p. 37-46
    Abstract: Whether age or gender or both influenced severity of injuries suffered in head-on automobile collisions on rural highways was assessed. The initial hypothesis was that, because of physiological changes, and possibly other changes related to aging (including loss of bone density), older drivers and passengers would suffer more severe injuries when involved in head-on collisions. Results of logistic regression analysis indicate that four separate factors, incorporating 14 individual and interactive variables, were strongly related to injury severity. Individual variables included age of driver or passenger (either linear or quadratic), position in the vehicle, and form of protection used, along with a set of interactive variables (such as age and position). The importance of age-related effects in injury severity is verified by hierarchical and principal components logistic regression models, amplifying findings of exploratory stepwise logistic analysis. Variations in findings resulted when the population was divided by gender. Although age remained a very important factor in predicting injury severity for both men and women, use of lap and shoulder restraints appeared to be more beneficial for men than for women, while deployed air bags seemed more beneficial for women than for men.
    Type of Medium: Online Resource
    ISSN: 0361-1981 , 2169-4052
    Language: English
    Publisher: SAGE Publications
    Publication Date: 1997
    detail.hit.zdb_id: 2403378-9
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  • 2
    Online Resource
    Online Resource
    SAGE Publications ; 1998
    In:  Transportation Research Record: Journal of the Transportation Research Board Vol. 1610, No. 1 ( 1998-01), p. 39-43
    In: Transportation Research Record: Journal of the Transportation Research Board, SAGE Publications, Vol. 1610, No. 1 ( 1998-01), p. 39-43
    Abstract: Ultrathin whitetopping (UTW) is a concrete overlay of a distressed asphalt pavement, 50 to 100 mm thick, with close joint spacing. The overlay is specifically bonded to the existing asphalt pavement. It may or may not contain fibers. By bonding the UTW to the existing asphalt surface, the UTW forms a composite pavement section with the underlying asphalt, which reduces the stresses in the concrete layer. This composite pavement section delivers the longer life and durable performance characteristics of concrete pavement and is cost competitive with ordinary asphalt. Many areas are discussed, but not all questions about UTW are answered. A snapshot of the current state of the practice as it now stands is presented.
    Type of Medium: Online Resource
    ISSN: 0361-1981 , 2169-4052
    Language: English
    Publisher: SAGE Publications
    Publication Date: 1998
    detail.hit.zdb_id: 2403378-9
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  • 3
    Online Resource
    Online Resource
    SAGE Publications ; 1999
    In:  Transportation Research Record: Journal of the Transportation Research Board Vol. 1684, No. 1 ( 1999-01), p. 128-136
    In: Transportation Research Record: Journal of the Transportation Research Board, SAGE Publications, Vol. 1684, No. 1 ( 1999-01), p. 128-136
    Abstract: Diamond grinding restores a smooth riding surface with the desirable friction characteristics on concrete pavements. This technique was first used in 1965 on a 19-year-old section of I-10 in California to eliminate excessive faulting. Since then, diamond grinding has become a major element of concrete pavement restoration projects. Despite this long history, little valid documentation of the performance of diamond-ground pavements exists. In recognition of the critical need for such information, the Portland Cement Association, in association with the American Concrete Pavement Association and the International Grooving and Grinding Association, sponsored a study of the performance of diamond-ground pavements. The study involved conducting a comprehensive review of existing information on diamond grinding, data collection, data analysis, and documentation of the study findings. Extensive field surveys were conducted to obtain the performance data needed for the analysis. In all, 60 pavement sections in 18 states were surveyed. In addition, performance data for 133 sections were obtained from an earlier study of the performance of diamond-ground pavements. The Long-Term Pavement Performance database also was used because the SPS-6 sections (concrete pavement rehabilitation) provide opportunity for the direct, side-by-side comparison of the performance of diamond-ground pavement sections and other rehabilitation alternatives. Various analyses were conducted to document the performance of diamond-ground pavements, including an evaluation of faulting performance, longevity of diamond-ground texture, and the effects of diamond grinding on service life. Presented are a brief description of the work conducted and a summary of the findings.
    Type of Medium: Online Resource
    ISSN: 0361-1981 , 2169-4052
    Language: English
    Publisher: SAGE Publications
    Publication Date: 1999
    detail.hit.zdb_id: 2403378-9
    Library Location Call Number Volume/Issue/Year Availability
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  • 4
    Online Resource
    Online Resource
    SAGE Publications ; 1999
    In:  Transportation Research Record: Journal of the Transportation Research Board Vol. 1693, No. 1 ( 1999-01), p. 50-61
    In: Transportation Research Record: Journal of the Transportation Research Board, SAGE Publications, Vol. 1693, No. 1 ( 1999-01), p. 50-61
    Abstract: Is age a factor in injury severity in the occurrence of broadside and angle collisions of automobiles on rural highways? The primary hypothesis is that older drivers and passengers would suffer more severe injuries than younger adults when involved in these types of collisions. Injury severity was chosen as the dependent variable, with nine independent or interaction variables tested. Independent variables were selected if they improved the model significantly, at a significance level of p 〈 .05. Relationships were verified using Hierarchical Regression Analysis and Principal Components Regression. Findings varied, depending on the point-of-impact examined and the vehicle occupant gender. Age (linear and quadratic) proved to be a significant predictor of injury severity for all, but it was slightly greater for females than for males. Use of lap and shoulder restraints proved to reduce injury severity, but results are less certain for women. Air bags deployed were significant predictors when the vehicle was struck in the rear third, but only for females. One of the study’s surprises was the lack of strength of the variable of occupant position relative to the point-of-impact, except as part of interaction variables with age—both linear and quadratic. Position refers to the location of the occupant relative to the point-of-impact, with the position furthest from impact presumed as being the safest.
    Type of Medium: Online Resource
    ISSN: 0361-1981 , 2169-4052
    Language: English
    Publisher: SAGE Publications
    Publication Date: 1999
    detail.hit.zdb_id: 2403378-9
    Library Location Call Number Volume/Issue/Year Availability
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