Long-term trends in weather-related crash risks

Investigation of time and weather effects on crash types using full Bayesian multivariate Poisson lognormal models

“…Some found a positive correlation between precipitation and crash severity (Brijs et al, 2008;El-Basyouny and Kwon, 2012;Jung et al, 2011;Qiu and Nixon, 2008), while others found a negative correlation (Andrey, 2010;Bergel et al, 2013). In terms of temperature, researchers found an inverse relationship between the mean temperature and both severe (injury and fatal) and PDO crashes (Bergel et al, 2013;El-Basyouny and Kwon, 2012).…”

“…For instance, several researchers have assessed the effect of weather elements, i.e., snow fall (Andrey, 2010;Eisenberg and Warner, 2005;Hermans et al, 2006;Khattak and Knapp, 2001), rain fall (Abdel-Aty and Pemmanaboina, 2006;Usman et al, 2012;, wind speed (Jung et al, 2011;Usman et al, 2012), temperature (Bergel et al, 2013;Brijs et al, 2008;El-Basyouny and Kwon, 2012 crash occurrence (Ahmed et al, 2012;Brijs et al, 2008;Usman et al, 2012;, whereas other researchers investigated these effects on crash severity (Andrey, 2010;Bergel et al, 2013;Eisenberg, 2004;El-Basyouny and Kwon, 2012). While the above studies are useful in understanding the effect of adverse weather, it is not always possible to identify suitable countermeasures based on the results of these studies.…”

Effects of extraordinary snowfall on traffic safety

“…El-Basyouny and Kwon (2012) focused on one specific snowy Canadian city (Edmonton) and reported that severe collisions increased by 3.3% per cm of snowfall and PDO crashes increased by 5.8% per cm. Andrey (2010) followed up his 2003 study with a comparison of crash rates during inclement weather from 1984 to 2002. While he found dramatic decreases in fatalities during rain, possibly due to new braking and traction technologies, there was no significant difference in fatality rates during snowfall over the study period.…”

Relationship Between Meteorological Factors and Accidents of Traction Power Supply System of High-Speed Railway

“…Meteorological composite index is defined to describe the relationship between the failure and the meteorological factors as follows, learned from meteorological early warning model in other areas [9,10].…”