Fatigue, sleepiness and drowsiness on the roads
While the Epworth Sleepiness Scale can help determine the likelihood of an individual falling asleep and potentially posing a risk to themselves and others, by its nature it will not change behaviour.
I follow with interest the activity of governments around the globe in legislating the use of testing to ensure our roads are made safer for all users.
Sites such as Nation Transport Commission - Australia and US Department of Transport, Federal Highway Administration - USA help transport business understand their obligation as new initiatives are introduced and laws changed.