Irish Flag — Green, Grungy

1600 × 800

Biohazard Symbol — Red, Dramatic, Digital Art, Red Background, Silver

1366 × 768

Radioactive Warning Symbol — Black, Dramatic

1600 × 1000

Radioactive Warning Symbol — Black

1600 × 1067

High Voltage Sign — Orange, Dramatic

2080 × 1544

High Voltage Sign

2080 × 1544

High Voltage Warning Sign — Orange

1360 × 768

Biohazard Symbol — Red, Warning, Illustration, Red Background, Grunge Texture

1200 × 750

Warning Sign on Fence — Yellow, Cautionary

1360 × 768

Anime Girl with Brown Hair — Calm, Warning Sign

1280 × 1024

Warning sign: Do not pee on electric fence

800 × 600

Warning sign: do not pee on electric fence

1920 × 1200