Symbol 2457 from ISO 7000 - Title/Meaning: Loading light 
Function/description: To identify the control that activates or deactivates a light source located near or at the vehicle roofline, illuminating the rear of the vehicle. To indicate the operational status of the loading light.
Own work using: iso.org/obp/graphics/grs/00989359-b1d8-40d2-8c87-db88c27626e8 200.png
Vectorization:  Mrmw