Article
INTERCHANGES SAFETY: FORECAST MODEL BASED ON ISAT ALGORITHM
DOI: 10.7708/ijtte.2013.3(3).02
3 / 3 / 243-259 Pages
Author(s)
Salvatore Leonardi - Department of Civil and Environmental Engineering, University of Catania, Italy -
Abstract
The ISAT algorithm (Interchange Safety Analysis Tool), developed by the Federal Highway Administration (FHWA), provides design and safety engineers with an automated tool for assessing the safety effects of geometric design and traffic control features at an existing interchange and adjacent roadway network. Concerning the default calibration coefficients and crash distributions by severity and type, the user should modify these default values to more accurately reflect the safety experience of their local/State agency prior to using ISAT to perform actual safety assessments. This paper will present the calibration process of the FHWA algorithm to the local situation of Oriental Sicily. The aim is to realize an instrument for accident forecast analyses, useful to Highway Managers, in order to individuate those infrastructural elements that can contribute to improve the safety level of interchange areas, if suitably calibrated.
Number of downloads: 2705
References:
Bauer, K.M.; Harwood, D.W. 1998. Statistical Models of Accidents on Interchange Ramps and Speed-Change Lanes, Federal Highway Administration, Report No. FHWARD-97-106.
Calvi, A.; Benedetto, A.; De Blasiis, M.R. 2012. A driving simulator study of driver performance on deceleration lanes, Accident Analysis and Prevention. DOI: http://dx.doi.org/10.1016/j.aap.2011.06.010, 45(2012): 195-203.
Canale, S.; Distefano, N.; Leonardi, S. 2009a. Progettare la sicurezza stradale. Criteri e verifiche di sicurezza per la progettazione e l’adeguamento degli elementi delle infrastrutture viarie: intersezioni, tronchi, sovrastrutture, gallerie, opere idrauliche, barriere di sicurezza, illuminazione, segnaletica ed interventi di traffic calming. EPC Libri, ISBN: 978-88-6310-129-4.
Canale, S.; Distefano, N.; Leonardi, S.; Pappalardo, G. 2009b. Progettare le intersezioni. Tecniche per la progettazione e la verifica delle intersezioni stradali in ambito urbano ed extraurbano secondo il D.M. 19/4/2006. EPC Editore, ISBN: 978-88-6310-352-6.
Chen, H.; Liu, P.; Lu, J.J.; Behzadi, M. 2009. Evaluating the safety impacts of the number and arrangement of lanes on freeway exit ramps, Accident Analysis and Prevention. DOI: http://dx.doi.org/10.1016/j.aap.2009.01.016, 41(3): 543-551.
Chen, H.; Zhou, H.; Zhao, J.; Hsu, P. 2011. Safety performance evaluation of left-side off-ramps at freeway diverge areas, Accident Analysis and Prevention. DOI: http://dx.doi.org/10.1016/j.aap.2010.08.019, 43(3): 605-612.
Dell’Acqua, G. 2012. Using fuzzy inference systems to optimize highway alignments, International Journal for Traffic and Transport Engineering, 2(1): 44-59.
Guo, T.; Deng, W.; Lu, J. 2010. Safety evaluation for freeway exit ramp based on speed consistency, Journal of Transportation Systems Engineering and Information Technology. DOI: http://dx.doi.org/10.1016/S1570-6672(09)60074-X, 10(6): 76-81.
Hasan, Md.M. 2012. Investigation of the effect of traffic parameters on road hazard using classification tree model, International Journal for Traffic and Transport Engineering. DOI: http://dx.doi.org/10.7708/ijtte.2012.2(3).08, 2(3): 271-285.
Qu, X.; Guo, T.Y.; Wang, W.; Hu, Q.Z. 2013. Measuring speed consistency for freeway diverge areas using factor analysis, Journal of Central South University. DOI: http://dx.doi.org/10.1007/s11771-013-1484-0, 20(1): 267-273.
Suraji, A.; Tjahjono, N. 2012. A confirmatory factor analysis of accidents caused by the motorcycle aspect in urban area, International Journal for Traffic and Transport Engineering, 2(1): 60-69.
Torbic, D.J.; Harwood, D.W.; Gilmore, D.K.; Richard, K.R.; Bared, J.G. 2009. Safety Analysis of Interchanges, Transportation Research Record: Journal of the Transportation Research Board. DOI: http://dx.doi.org/10.3141/2092-05, 2092(2009): 39-47.
Quoted IJTTE Works
Related Keywords
There is no related studies.