Speed blindness or motion-induced blindness refers to the difficulty in estimating your own speed when driving at high speeds over a longer period of time. In this situation, it is easy to misjudge your own speed, thinking you are driving slower than you actually are.

Speed blindness might lead someone to:

misjudge their stopping distance and brake too late or too lightly in a hazardous situation

exit the road at too high speeds

drive too closely to the car ahead drive too closely to the car ahead