[mostapha]

You don't make the decision to drive and then that's it. At any point, you can decide "i'm too tired," and pull off.

Take a nap in your car. Let someone else drive if you're not alone. Call a cab and pick up your car in the morning. Call Safe Ride, and they'll send a driver and a moped that will fit in your trunk if you're somewhere they operate.

There are always alternatives to putting yourself in a dangerous situation. And, I believe these systems will lead people to drift further into these types of dangerous situations before even thinking about safer alternatives.