Faculty Publications

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    Accident Prediction Model for Horizontal Curves on State Highways Using Spatial Variation
    (Springer Science and Business Media Deutschland GmbH, 2025) Pandey, S.K.; Mulangi, R.H.; Sanganaikar, R.S.; Babu, K.R.N.N.
    Accidents have become one of the primary cause of fatalities on highways. Road accidents are one of the significant issue around the globe, but in context of India, the severity is more due to immense growth in road networks and traffic capacity. Curve are at higher range of potential risks of accidents because of inadequate sight distance and speed measures. This study aims to develop accident prediction model using regression analysis. Location selected for study was State Highway-1 in Udupi district, Karnataka. Ten curves are selected on the road and comparative study of model prepared is checked to verify the model reliability. Datasets used for model calibration and development is Highway Geometric data, past accidents records, and spot speed of vehicles. Geometric data for the road sections are obtained from satellite imageries, and GIS data and speed data are collected using speed camera. Model generation was done using statistical computing by using multi-linear regression. The model showed that curve details and speed reduction between successive features were strongly related to accident frequency. Sharper curves are more tend to accidents, and speed reduction is higher at curves with smaller radius. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.
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    Modelling operating speed and speed differential on intermediate lane rural roads
    (2012) Sowmya, N.J.; Ravi Shankar, A.U.; Anjaneyulu, M.V.L.R.
    Geometric design elements play an important role in defining the operational efficiency of any roadways. Considerable research has been undertaken worldwide to explore the design consistency concept including identifying potential consistency measures and developing models to estimate them. The main objective of this study is to investigate the design consistency of intermediate lane highways existing in Dakshina Kannada district of Karnataka state based on operating speed and speed differential models. The speed measurements are taken at the mid of tangent section and start of the curve during daylight, off-peak periods and under dry weather conditions. The multiple linear regression analysis technique in SPSS (Statistical Package for Social Sciences) software is used for model estimation. Both operating speed (85th percentile speed) and 85th percentile speed differential measures are used with geometric data to identify the design consistency of horizontal curves. A comparative study is performed to identify the variation between these two speed measures. Operating speed and speed differential models for intermediate lane rural roads are presented in this paper. © 2012 CAFET-INNOVA TECHNICAL SOCIETY.