In order to grasp the relationships between crowd densities and uneasy feeling of persons on stairs in railway stations, we conducted experiments which reproduced the high-density crowd starting to walk up and down the stairs in a mock-up station stairs. As a result, we obtained delay in starting to walk at various densities quantitatively and following 3 opinions. 1. When the density reaches about 4.0 persons/ m2, a majority of passengers may feel uneasy. 2. More attention must be paid to downward crowd staying on stairs than upward crowd because of its uneasy feeling. 3. A crowd must not be stayed on stairs in railway stations at a density of over 4.0 persons/ m2.
