Warning Sign with Text — Red, Vector Art

1920 × 1200

Surveillance warning sign

2832 × 2128

No entry sign on fence

4928 × 3264

Keep Out Sign with Warning

2000 × 1400

No trespassing sign on tree

1440 × 900

Warning Sign with Text — Yellow, Vector Art

2359 × 3186

Wooden Sign on Post

1280 × 960

Warning Sign with People — Yellow, Cautionary, Vector Art

2560 × 1440

Smiley face camera warning sign

1680 × 1050

Restricted area sign on concrete wall

1920 × 1080

Authorized Personnel Only sign

1280 × 1024

CIA Logo and Warning — Black, Serious

1024 × 768