A 2015 study published in the Journal of Epidemiology and Community Health looked at statistics where researchers studied lights that were turned on at certain hours, dimmed, or turned off completely, and found that it had no impact on traffic collisions or crime.
Uno studio del 2015 apparso sul Journal  of Epidemiology and Community Health riportava alcune statistiche di ricercatori che analizzavano luci accese a un dato orario, attenuate o completamente spente, e concludeva che questo non aveva legami con gli incidenti automobilistici o con gli atti criminali.