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Accident Prediction Model At Un Signalized Intersections Using Multiple Regression Method
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Book Synopsis Accident Prediction Model at Un-signalized Intersections Using Multiple Regression Method by :
Download or read book Accident Prediction Model at Un-signalized Intersections Using Multiple Regression Method written by and published by . This book was released on 2011 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Accident Prediction Model Development for Unsignalized Intersections by : Michael Y. K. Lau
Download or read book Accident Prediction Model Development for Unsignalized Intersections written by Michael Y. K. Lau and published by . This book was released on 1989 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Accident Prediction Models for Signalized and Unsignalized Intersections by : Matthew T. Naclerio
Download or read book Accident Prediction Models for Signalized and Unsignalized Intersections written by Matthew T. Naclerio and published by . This book was released on 1989 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of Accident Prediction Models and Improvement Strategies by : Yiu-Kuen Michael Lau
Download or read book Development of Accident Prediction Models and Improvement Strategies written by Yiu-Kuen Michael Lau and published by . This book was released on 1989 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Accident Prediction Model Development for Unsignalized Intersections by : Michael Y. K. Lau
Download or read book Accident Prediction Model Development for Unsignalized Intersections written by Michael Y. K. Lau and published by . This book was released on 1988 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Accident Prediction Models for Unsignalized Intersections by : Michael Y. K. Lau
Download or read book Accident Prediction Models for Unsignalized Intersections written by Michael Y. K. Lau and published by . This book was released on 1989 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Accidents at Urban Intersections by : Romano F. Del Mistro
Download or read book Accidents at Urban Intersections written by Romano F. Del Mistro and published by . This book was released on 1979 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: An equation to estimate the number of accidents at urban intersections is derived using the volumes on the approaches and six environmental factors as independent variables.
Book Synopsis Accident Prediction Model Development: Signalized Intersections. Final Report by : Michael Y. K. Lau
Download or read book Accident Prediction Model Development: Signalized Intersections. Final Report written by Michael Y. K. Lau and published by . This book was released on 1988 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Estimating Calibration Factors and Developing Calibration Functions for the Prediction of Crashes at Urban Intersections in Kansas by : Rijesh Karmacharya
Download or read book Estimating Calibration Factors and Developing Calibration Functions for the Prediction of Crashes at Urban Intersections in Kansas written by Rijesh Karmacharya and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Kansas experienced about 60,000 crashes annually from 2013 to 2016, 25% of which occurred at urban intersections. Hence, urban intersections in Kansas are one of the most critical locations in terms of frequency of crashes. Therefore, an accurate prediction of crashes at these locations would help identify critical intersections with a higher probability of an occurrence of crash, which would help in selecting appropriate countermeasures to reduce those crashes. The crash prediction models provided in the Highway Safety Manual (HSM) predict crashes using traffic and geometric data for various roadway facilities, which are incorporated through Safety Performance Functions (SPFs) and Crash Modification Factors. The primary objective of this study was to estimate calibration factors for different types of urban intersection in Kansas. This study followed the crash prediction method and calibration procedure provided in the HSM to estimate calibration factors for four different urban intersection types in Kansas: 3-leg unsignalized intersections with stop control on the minor approach (3ST), 3-leg signalized intersections (3SG), 4-leg unsignalized intersections with stop control on the minor approach (4ST), and 4-leg signalized intersections (4SG). Following the HSM methodology, the required data elements were collected from various sources. The Annual Average Daily Traffic (AADT) data were extracted from Kansas Crash Analysis & Reporting System (KCARS) database and GIS Shapefiles downloaded from Federal Highway Administration website. For some of 3ST and 3SG intersections, minor-street AADT was not available. Hence, multiple linear regression models were developed for the estimation of minor-street AADT. Crash data were extracted from the Kansas Crash Analysis and Reporting System database, and other geometric data were extracted using Google Earth. The HSM requirement for sample size is 30 to 50 sites, with at least 100 crashes per year for the study period for the combined set of sites. In this study, the study period for 3ST, 3SG, and 4SG intersections were taken as 2013 to 2015, and 2014 to 2016 for 4ST, based on the availability of recent crash data at the beginning of the calibration procedure for each facility type. The sample size considered for calibration was 234 for 3ST, 89 for 3SG, 167 for 4ST, and 198 for 4SG intersections. Out of the 234 3ST intersections, minor-street AADT was estimated using multiple linear regression models for 106 intersections. For 3SG intersections, minor-street AADT was estimated for 21 out of the 89 intersections. The calibration factors for these facility types were estimated to be 0.64 for 3SG, 0.51 for 3ST, 1.17 for 4SG, and 0.61 for 4ST when considering crashes of all severities. Considering only the fatal and injury crashes, the calibration factors were estimated as 0.52 for 3SG, 0.40 for 3ST, 2.00 for 4SG, and 0.73 for 4ST. The calibration factors show that the HSM methodology underpredicted crashes for 4SG, and overpredicted crashes for other three intersection types. The reliability of the calibration factors was assessed with the help of Cumulative Residual plots and coefficient of variation. The results from the goodness-of-fit tests showed that the calibration factors were not reliable and showed bias in the prediction of crashes. Hence, calibration functions were developed, and their reliability were examined. The results showed that calibration functions had better reliability as compared to calibration factors, with more accuracy in crash prediction. The findings from this study can be used to identify intersections with a higher probability of having crashes in the future. Suitable countermeasures can be applied at critical locations which would help reduce the number of crashes at urban intersections in Kansas; thus increasing the safety.
Book Synopsis Accident Prediction Model Development by : Michael Yiu-Kuen Lau
Download or read book Accident Prediction Model Development written by Michael Yiu-Kuen Lau and published by . This book was released on 1988 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Accident Prediction Models for Signalized and Unsignalized Intersections by : Wayne Shoumaker
Download or read book Accident Prediction Models for Signalized and Unsignalized Intersections written by Wayne Shoumaker and published by . This book was released on 1990 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Statistical Methods and Modeling and Safety Data, Analysis, and Evaluation by : National Research Council (U.S.). Transportation Research Board
Download or read book Statistical Methods and Modeling and Safety Data, Analysis, and Evaluation written by National Research Council (U.S.). Transportation Research Board and published by . This book was released on 2003 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers empirical approaches to outlier detection in intelligent transportation systems data, modeling of traffic crash-flow relationships for intersections, profiling of high-frequency accident locations by use of association rules, analysis of rollovers and injuries with sport utility vehicles, and automated accident detection at intersections via digital audio signal processing.
Book Synopsis Injury Accident Prediction Models for Signalized Intersections by : Michael Yiu-Kuen Lau
Download or read book Injury Accident Prediction Models for Signalized Intersections written by Michael Yiu-Kuen Lau and published by . This book was released on 1988 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Accident Prediction Models for Signalized Intersections by : Michael Y. K. Lau
Download or read book Accident Prediction Models for Signalized Intersections written by Michael Y. K. Lau and published by . This book was released on 1986 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modeling Traffic Accidents at Signalized Intersections in the City of Norfolk, VA by : Sharad K. Maheshwari
Download or read book Modeling Traffic Accidents at Signalized Intersections in the City of Norfolk, VA written by Sharad K. Maheshwari and published by . This book was released on 2010 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This study was an attempt to apply a proactive approach using traffic pattern and signalized intersection characteristics to predict accident rates at signalized intersections in a city's arterial network. An earlier analysis of accident data at selected intersections within the City of Norfolk indicated that in addition to traffic volume, other controllable factors contributed to traffic accidents at specific intersections. These factors included area topography, lane patterns, type of road signs, turning lanes, etc. It is also known that administrative factors such as signal types, signal polic[i]es, road closures, etc., and maintenance factors such as road conditions, condition of the signals, condition of road signs, etc. also impact road accidents. / The objective of this study was to relate these variables to accident rate and delineate variables that are statistically more significant for accident rate. Data on several topographical variables was collected in the City of Norfolk. These variables included number of lanes, turn lanes, pedestrian crossing, restricted lanes, etc. A linear regression model was used to establish relationship between these variables and the accident rate. The resulting regression model explained 60% of the variability. It also showed that four topographical variables are more important than other variables. Those variables included number of lanes, number of turn lanes, presence of median and presence of permanent hazard like railway crossing. However, validation of model showed higher than expected variation. The model developed, in this study, overestimates the accident rate by 33% thus, limiting its practical application."--Executive summary (p. 1).
Book Synopsis Development and Application of Accident Prediction Models for Signalized Intersections by : Sirivadidurage Sansaka Pradeep Kumara
Download or read book Development and Application of Accident Prediction Models for Signalized Intersections written by Sirivadidurage Sansaka Pradeep Kumara and published by . This book was released on 2002 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Statistical Models of At-grade Intersection Accidents by : K. M. Bauer
Download or read book Statistical Models of At-grade Intersection Accidents written by K. M. Bauer and published by . This book was released on 1996 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.