Lighting at landing doors for retrofitting and newly built lifts, according to EN81-1/2 7.6.1
”The natural or artificial lighting of the landings in the vicinity of landing doors shall be at least 50 lux at floor level, such that a user can see ahead when he is opening the landing door to enter the lift, even if the car light has failed.“ (EN 81-20 5.3.7.1)