7 icons for "signs"

99designs

stairs

steps

traffic-sign

stairs-fill

steps-fill

traffic-sign-fill

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Phosphor

1,512 icons MIT

Simple Icons

3,397 icons CC0 1.0

Lucide

1,668 icons ISC

Phosphor Filled

1,512 icons MIT

Feather

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Tabler

4,985 icons MIT

Meteocons