What can result from driving for a long time at high speed?

Driving for a long time at high speed can have several effects. First, you may lose your natural feeling for how fast you’re actually going. This is because you get used to the high speed, and if you slow down, you might feel like you’re moving much slower than you actually are. Second, it’s common to unconsciously reduce the following distance to the car in front, increasing the risk of accidents, because judging distances becomes more difficult at higher speeds. Your reactions do not actually improve with higher speed; in fact, stopping distances get longer and your reaction time is still the same or even worse due to fatigue. So, answers 1 and 2 are correct, and it’s important to always be alert and keep sufficient distance on the road, especially after driving fast for a long time.