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The consequences of using and manipulating with a mobile phone while driving has a large negative effect on attention. Driver inattention is the major problem in road safety and generally belongs to the main causes of traffic accidents with a higher representation of rear impact and has been considered as a societal safety issue. Nowadays, distraction during driving has been very often connected with using a mobile phone. The aim of this study has been the analysis of using a mobile phone by accident participants during normal driving. For the purpose of this study, unique data about accident participants collected by Czech In-depth accident study has been used. The results have shown an increasing tendency of mobile phone use with an increase in annual mileage. There is also a greater risk of mobile phone use while driving among young drivers for up to 24 years. The analysis has also shown, that the drivers, who were assessed during the interview as a risky or aggressive, report more often handling of a mobile phone while driving, which contains all activities where is mobile phone actively used, without involving fine motor skills.

This study presents a calculation of the time required to execute a lane-change manoeuvre. Compared with other (and older) calculation methods, an analysis was conducted to determine which approach could yield the most reliable results. This study aimed to present a universal calculation method for different road surfaces, surface conditions (dry and wet road surface), and vehicle types (i.e., from small vehicles to SUVs). A total of 108 comparable manoeuvres with modern vehicles were used as a basis for statistical analysis. A new mathematical constant was found based on a regression analysis, adjusting one of the older calculation methods (so-called Kovařík equation), providing the best match between real and calculated manoeuvre duration.

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Dopravní nehody, při kterých došlo k převrácení vozidla, mohou představovat problém při analýze nehodového děje, zejména s ohledem na stanovení výchozí rychlosti resp. rychlosti na počátku převracení vozidla. Použití počítačových simulačních programů se s ohledem na charakter těchto nehod a princip funkce (výpočtu) těchto programů nejeví jako optimální. Z tohoto důvodu je vhodné pro stanovení rychlosti vozidla použití empirických vzorců. V tomto článku je na příkladech představena analýza několika dopravních nehod, při kterých došlo k převrácení vozidla, s cílem stanovení výchozí rychlosti na počátku převracení.