Pilot Study of Reconsideration of the Lighting Environment in Train Stations under the Restriction of Power Use due to the Aftermath of the Great East Japan Earthquake

Field measurements were conducted to identify how the actual lighting environment has changed in train stations due to the aftermath of the Great East Japan Earthquake. Horizontal illuminance on the floor on the way from the platform to the exit of the station and the number of the lighted luminaires in each area of each station were measured. The measurements were conducted twice, in the summer and in the autumn 2011, to identify the continuity of electricity saving measures and the transition of the lighting environment. From the results of the measurements in the summer, it was identified that nearly 80% of the luminaires was lighted off in maximum. The results of our survey showed the possibility to lower the floor illuminance level for some areas where the passengers felt no inconvenience in walking, such as the ticket gates area and concourse.