Statistical Models of Accidents on Interchange Ramps and Speed-change Lanes PDF Download
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Author: K. M. Bauer
Publisher:
ISBN:
Category : Regression analysis
Languages : en
Pages : 168
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Book Description
Author: K. M. Bauer
Publisher:
ISBN:
Category : Regression analysis
Languages : en
Pages : 168
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Book Description
Author: Julie Anna Fee
Publisher:
ISBN:
Category : Express highways
Languages : en
Pages : 108
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Book Description
Principal findings of this study were that geometrics alone account for only a small portion of the variance in accidents and that no relationship could be established between fatalities and the geometrics studied. The geometrics studied include several types of interchanges, paved shoulders, sight distance, delineators, surface types, and other variables. Mathematical models were developed which can provide estimates of the average number of accidents on a particular type of highway or interchange, using the appropriate variables.
Author: Ahmad Khorashadi
Publisher:
ISBN:
Category : Express highways
Languages : en
Pages : 140
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Book Description
Accident rates (fatal, fatal plus injury, total, wet, and dark) were analyzed using analysis of variance (ANOVA) and analysis of covariance (ANCOVA) methods. The analyses were intended to look at the systematic differences in accident rates between ramps of different design, stratified by whether a ramp was in a rural or urban area, as well as whether it was an on-ramp or an off-ramp. Finally, a series of ANCOVA models was run, again stratified by rural/urban and on/off-ramp status, which included the measured ramp traffic volume as a covariant, and ramp configurations were noted to assess the differences between pairs of ramp configurations with respect to accident rates. The statistical analysis of accident data and findings are presented along with the findings of other literature to provide an update to a previously published report entitled "The Effect of Ramp Type and Geometry on Accidents" (1966), second edition, R.A. Lundy, published by the Traffic Department, Division of Highways, Department of Public Works, State of California
Author: Douglas W. Harwood
Publisher:
ISBN:
Category : Roads
Languages : en
Pages : 136
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Book Description
Author: California. Division of Highways
Publisher:
ISBN:
Category : Roads
Languages : en
Pages : 146
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Book Description
Author: K. M. Bauer
Publisher:
ISBN:
Category : Regression analysis
Languages : en
Pages : 164
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Book Description
The objective of this research was to develop statistical models of the relationship between traffic accidents and highway geometric elements for at-grade intersections. These models also incorporated the effect of traffic control features and traffic volumes on intersection accidents. The data base used to develop the models was obtained from the California Department of Transportation. Field data were also collected for a sample of urban, four-leg, signalized intersections to provide data on additional geometric design variables and turning-movement counts that were not available from existing highway agency files.
Author: Darren J. Torbic
Publisher: Transportation Research Board
ISBN: 0309258545
Category : Technology & Engineering
Languages : en
Pages : 131
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Book Description
"TRB's National Cooperative Highway Research Program (NCHRP) Report 730: Design Guidance for Freeway Mainline Ramp Terminals presents design guidance for freeway mainline ramp terminals based on current driver and vehicle behavior. Appendixes A to D to NCHRP Report 730 were not published as part of the print or PDF version of the report. They are only available electronically through the following links: Appendix A: Aerial View of Study Locations. Appendix B: Histograms of Observed Acceleration Rates. Appendix C: Verbal Instructions for Behavioral Study. Appendix D: Potential Changes Proposed for Consideration in the Next Edition of the Green Book (Note: Appendix D contains tracked changes that have been intentionally left intact--i.e., not accepted.)" Appendices are available at: http://www.trb.org/Highways1/Blurbs/167516.aspx--
Author: Taegon Kim
Publisher:
ISBN:
Category : Express highways
Languages : en
Pages : 414
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Book Description
Author: National Research Council (U.S.). Transportation Research Board
Publisher:
ISBN:
Category : Motor vehicle occupants
Languages : en
Pages : 254
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Book Description
This Transportation Research Record contains 28 papers dealing with statistical methods in highway safety research; highway safety data, analysis, and evaluation; occupant protection; and systematic reviews and meta-analysis. The papers address such topics as risk and crash prediction models, crashes on freeways and at signalized intersections, multivehicle crash prediction, speed and safety, red light running crashes, freeway lane closures, ramp design, accident exposure, rumble strip benefits, collisions with median trees, intersection safety, accident reconstruction, safety effects of speed limit changes, geometric design and head-on crashes, deer-vehicle crashes, sport utility vehicle rollover, vehicle occupancy and crash risk, a logit model for studying injury severity, abdominal injuries in rail passengers, healthy transport policies, and meta-analysis.
Author: Rune Elvik
Publisher: Emerald Group Publishing
ISBN: 1848552513
Category : Transportation
Languages : en
Pages : 1137
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Book Description
Contains summaries of the knowledge regarding the effects of 128 road safety measures. This title covers various areas of road safety including: traffic control; vehicle inspection; driver training; publicity campaigns; police enforcement; and, general policy instruments. It also covers topics such as post-accident care, and speed cameras.
