Warning Sign with People — Yellow

1440 × 900

Warning Sign with Stick Figures — Yellow

1000 × 1000

Biohazard Warning Sign — Yellow, Vector Art

2000 × 1500

Biohazard Symbol — Red, Warning

1366 × 768

Warning Sign on Metal — Yellow, Cautionary, Vector Art

1600 × 1000

Warning Sign with Screw

1024 × 819

Yellow Caution Sign

1206 × 777

Man Kicking Another Man — Yellow, Humorous, Vector Art, Person

1600 × 1000

Yellow Warning Sign — Cautionary

1920 × 1080

Biohazard Warning Sign — Yellow

1280 × 1024

Radioactive Warning Symbol — Yellow, Dramatic

1152 × 864

Biohazard Symbol — Yellow, Ominous

1920 × 1200