Every time you travel on public roads, you take some risks. Riding in or driving a motor vehicle means traveling at high speeds. Biking on the road or walking in proximity to public roads means that you could end up struck by someone in a vehicle. No matter how hard you try to stay safe, someone else can always put you at risk.
When other people choose to make poor safety decisions, like driving while drowsy or fatigued, the risk to you is higher. People who end up hurt as the result of someone else's bad decision should not end up saddled with medical costs, lost wages and property damage.
Drowsy driving is common and dangerous
According to the National Highway Traffic Safety Administration, drowsy driving is a frighteningly common practice. In 2015, the most recent year with data available, 824 people died because of drowsy driving. That is over 2 percent of all traffic fatalities.
Of course, it is harder to track drowsy driving than it is to track drunk driving or distracted driving. Chemical tests will reliably confirm impairment due to alcohol or drugs. Cellular phone records can demonstrate that a driver was using data or engaging with their phone immediately prior to a crash. When it comes to drowsy driving, self-reported behavior is the only way to gather data. It's therefore probable that drowsy driving is a factor in many more accidents than what's on record.
If you have reason to believe that fatigue or exhaustion played a role in a car crash, you should advise law enforcement of that fact when they arrive on the scene. Anything the other driver says or does to indicate being tired could help you build a case for compensation for any financial losses you suffer as a result of the crash.