- مبلغ: ۸۶,۰۰۰ تومان
- مبلغ: ۹۱,۰۰۰ تومان
Professor R J Smeed published his famous formula for predicting road deaths in 1949. Later on, other authors tried to validate or update the formula based on newer data. Most of these publications emphasized the encouraging finding that the increase of vehicle ownership leads to a decrease in fatalities per vehicle. Less attention was paid to the other and less encouraging – interpretation of Smeed’s formula, namely that the increase of vehicle ownership leads to an increase in fatalities per population and in the total number of fatalities. Fortunately, the increasing trend of the total number of fatalities started to change towards a decreasing trend in some countries from the 60’s. The paper analyses GDP, vehicle ownership, population and road fatality data from 139 countries. Relationships between these variables are shown. Using cluster analysis, countries are grouped according to their safety performance trends.