Railroad crossing.
You can cross the street.
Stop and see if there is a train coming.
On an elevator, escalator, vending machine, or other machinery that is not working.
The content is poisonous.
Cross the street at the crosswalk.
This is a non-smoking sign, so you should not be smoking.
By a trail meant for walking and biking.
Flammable. The content catches fire easily.
You can find an exit under the sign.
Only drive in the direction of the arrow.
By the restrooms at a public place.
Elevator.
You can find a place to eat nearby.
You should put your recycling in a bin marked with this sign.
On the window of a local shop.
A hospital is nearby.
You can find an ATM inside.
You should be careful when entering that area since it might be slippery.
At the entrance to a street.