What is the shape of a "Keep Right" sign, and how should the driver react when he sees one?

Question

What is the shape of a "Keep Right" sign, and how should the driver react when he sees one?

Answer 1

It is a white square sign for information with black image of a arrow jogging to the right

Answer 2

See this link:

http://www.ricesigns.com/buy/slower_traf...

The slower traffic keep right sign may be used on multi-lane roadways to reduce unnecessary lane changing.  If you are driving slower and see this sign, then move into the right lane. By doing this, you are not holding up faster traffic.

-OR-

You may have this sign in your country:

http://www.shutterstock.com/pic-1215609....