Too often the identification of critical road sites is made by “accident-based” methods that consider occurred accidents’ number. Nevertheless, such a procedure may encounter some difficulties when an agency does not have reliable and complete crash data at site level (e.g., accidents contributing factors clear or approximate accident location) crashes are underreported. Furthermore, relying on...

In recent years, there has been an abundance of research that has used Poisson models and its variants (negative binomial and zero-inflated models) to improve our understanding of the factors that affect accident frequencies on roadway segments. This study explores the application of an alternate method, tobit regression, by viewing vehicle accident rates directly (instead of frequencies) as a ...

This paper describes development and application of a road accident analysis and visualization package Road Accident View (RAV), which integrated Microcomputer Accident Analysis Package (MAAP) and Geographical Information System (GIS) components. GIS offer an advanced engine to drive, both area-wide and location-oriented investigations. With this system the possibility to raise and solve accide...

the present study aimed to investigate the characteristics of occupational accidents and frequency and severity of work related accidents in the construction industry among iranian insured workers during the years 20072011.the iranian social security organization (isso) accident database containing 21,864 cases between the years 2007-2011 was applied in this study. in the next step, total accid...