The opinions expressed in the studies are those of the consultant and do not necessarily represent the position of the Commission.
The results of different surveys world-wide (Australia, France, Ireland, Netherlands, USA) show that over 50% of long-haul drivers have at some time almost fallen asleep at the wheel . A survey among Dutch, German, Belgian, Danish and Italian long distance truck drivers provided the following results on fatigued driving :
In total 60% of European truck drivers reports to almost have fallen asleep. Van Ouwerkerk  reports similar figures for USA (64%), Australia (60%) and Ireland (45%).
A Finnish survey research  amongst 317 male truck drivers showed that especially long-distance drivers had regularly to deal with fatigue while driving; over 40% reported dosing off in the past three months and about 25% reported this to have happened twice in the same period. In contrast, among short-distance truck drivers, only 15% reported dosing off behind the wheel in the past 3 months.
In several studies of European professional drivers (both car drivers and truck drivers), it was demonstrated that long-distance driving often goes together with reduced sleep duration :
A survey of 573 long-distance truck drivers travelling on New York interstate highways, indicated that 47% of the drivers had ever fallen asleep at the wheel of a truck, and 25% had fallen asleep at the wheel in the past year .