Les chiffres fournis par la police de la route semblent indiquer que la fatigue excessive est une des causes les plus courantes de ces accidents, un nombre relativement important des accidents impliquant des véhicules commerciaux légers se produisant le soir ou la nuit.
Figures provided by the road traffic police seem to indicate over-tiredness as one of the most frequent causes of such accidents, as a relatively large number of accidents involving light commercial vehicles happen in the evening or at night.