Editing Staircase (section)

== Lighting ==
Good lighting is important in a staircase so users see where they are going and to prevent falls.<ref>{{Cite journal |last1=Thomas |first1=Neil M. |last2=Skervin |first2=Timmion |last3=Foster |first3=Richard J. |last4=O'Brien |first4=Thomas D. |last5=Carpenter |first5=Mark G. |last6=Maganaris |first6=Constantinos N. |last7=Baltzopoulos |first7=Vasilios |last8=Lees |first8=Carolyn |last9=Hollands |first9=Mark A. |date=2020-04-01 |title=Optimal lighting levels for stair safety: Influence of lightbulb type and brightness on confidence, dynamic balance and stepping characteristics |url=https://www.sciencedirect.com/science/article/pii/S0531556519306321 |journal=Experimental Gerontology |volume=132 |pages=110839 |doi=10.1016/j.exger.2020.110839 |pmid=31958491 |s2cid=210703463 |issn=0531-5565}}</ref> There is often a [[window]] on the wall to let in [[daylight]]. In many cases, indoor stairs are placed far inside the building structure, and it is often not easy to get access to a wall on the outside where it would be natural to have a regular window for letting daylight in. For this reason, it is not unusual to find a [[skylight]] or [[roof window]]s above a stairwell.

A research article suggests that perceived safety increases when using [[Downlighting|downwards lighting]] towards the stairs, while upwards lighting resulted in a substantial decrease of perceived safety.<ref>{{Cite journal |last1=Van de Perre |first1=Laurens |last2=Danschutter |first2=Stefan |last3=Janssens |first3=Kim |last4=Hanselaer |first4=Peter |last5=Dujardin |first5=Marc |last6=Smet |first6=Kevin A. G. |last7=Ryckaert |first7=Wouter R. |date=2019-12-01 |title=Safety perception of stairs with integrated lighting |url=https://www.sciencedirect.com/science/article/pii/S0360132319305992 |journal=Building and Environment |volume=166 |pages=106389 |doi=10.1016/j.buildenv.2019.106389 |bibcode=2019BuEnv.16606389V |s2cid=203123801 |issn=0360-1323|url-access=subscription }}</ref>