An NTUA Diploma Thesis titled “Impact of weather conditions and rush on road safety” was recently presented by Giota Spanou. Data of 42 young drivers were collected, from a driving simulator experiment with and without any time pressure in good weather conditions, in fog, rain, and snow. Linear and binomial logistic regression models were developed for the mean driving speed, reaction time, headway and accident probability. The application of the mathematical models showed that snow and rain lead to a significant increase in the probability of an accident. Fog increases the accident probability only in the event of a dangerous event and time pressure seems to have the same effects as snow, a fact that should concern drivers.