I understand that the red, yellow and green lines give a general idea of how bad traffic is on a road, but do they have any specific meaning, like red equals a 40-minute wait at a toll bridge? a. According to the Google Maps site, the colored lines representing traffic conditions on major highways refer to the speed at which one can travel on that road.
The oldest form of writing known to man is Cuneiform used in Mesopatamia.
ca. 3100 BCE. Cuneiform, one of the earliest known writing systems developed in Sumer (modern day Iraq). Wedge-shaped marks were made on clay tablets by a blunt stylus cut from a reed. ca. 3000. Papyrus plant, paper-like material used as a writing surface in Egypt.