To limit the probability that persons, including children, people of short stature and those using a wheelchair, will not be able to see or be seen through glazing that is too high, which could lead to persons being hit, which could lead to harm to persons.
To limit the probability that persons, including children, people of short stature and those using a wheelchair, will not be able to see or be seen through glazing that is too high, which could lead to persons being hit, which could lead to confusion, which could lead to delays in the evacuation or movement of persons to a safe place, which could lead to harm to persons.