The sign with an exclamation mark in a triangle with arrows circling it is like, telling you to recycle. It's just, it has more meaning to it as if it were saying, "Recycle!!!"
Note: There are many sign Languages around the world, the answer below refers to American Sign Language or ASL. The meaning depends on a variety of factors. Location of the sign, movement of the sign, palm orientation, sign direction etc. I can't answer this question accurately, as it is too difficult to tell the particular usage you are referring to.
They mean that the expression to the left of the sign is greater than or less than (as appropriate) the expression to the right of the sign.
Could mean either Victory or Peace, as in popular usage. the idea of achieving a landmark victory- as has happened with Lesbians and others recently, It is an affirmative sign. (Also used to mean vagina, especially when the tongue is included as part of the gesture.)
Time out, or a sign to pause a game.
A green triangle safety sign can mean different things. A green oblong or square typically provides information about safe conditions.
It is called the "Isolated Alert Triangle Sign" and it means: "Watch out!"
Depends. If the light has a sign next to it that says 'Yield on green light' it means you can go when the light is green and there is no traffic coming from the opposite direction that could hit you. If there is no sign wait for the arrow.
railroad
Yeld
For emergency vehicles to change the traffic lights by remote.
dont throw trash on the road.
It is a worded warning sign
Green traffic signs usually indicate directions. Exit and Entrance signs for the expressway, distances to cities and towns, mile markers, etc.
No passing zone!
Tourist information
In railroad traffic, a green arrow means go ahead now.