Symbol 3744 from ISO 7000 - Title/Meaning: Child seat attachment – ISOFIX/LATCH system Function/description: To indicate the location of a safety belt lower anchorage attachment point (vehicle anchor) meeting ISOFIX or LATCH specifications for securing a child seat in a vehicle.
pay attention to orientation of symbolAdditional information: 
May be used as a building block to develop other symbols
Either contrasting colours or adequate relief (if symbol is moulded or embossed) should be used. This symbol is already widely used in the automotive industry; however, up to now the symbol was published as unregistered informative symbol within ISO 2575 without symbol description. For the new edition of ISO 2575 the symbol description and registration shall be added.
Own work using: iso.org/obp/graphics/grs/9ad33675-302d-4db6-b33e-479601868bd6 200.png
Vectorization:  Mrmw