If you have a long-distance car journey coming up, you might prepare some supplies. For instance, some snacks to keep you going, a change of clothes for when you get there, and a flask of coffee or some energy drinks to help you stay alert.
Plenty of people do this, and while it is good to prepare, it is important to consider what you are preparing for. If you set off knowing you will need caffeine to stay awake, you are saying that you will be too tired to drive safely at some point during the journey.
It can be hard to avoid long journeys. For instance, your need to visit family in another state for Thanksgiving, and your spouse does not drive. Or you have a set of business meetings in different locations that you cannot reach in time by public transport.
In an ideal world, we could all afford the time and money to break long journeys by stopping overnight. Or we could always travel with two drivers, allowing one to take the wheel while the other gets a rest. Yet, it is not always realistic, and even if we always did that, the roads would still be full of other weary drivers.
Needing coffee when driving is a sign you need to rest
Caffeine does not stop you from being tired. It just prevents you from feeling it. Underneath the caffeine mask, your body and mind are crying out for rest. You are still less alert, less able to react quickly in an emergency, and more likely to crash than if well-rested.
If you are injured in a collision with another driver, look for signs that they crashed into you because they were tired. Maybe they have red eyes. Perhaps they say they traveled overnight, or perhaps there are empty cans of energy drink in the passenger footwell.