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.
Cuneiform script is one of the earliest known forms of written expression. Emerging in Sumer around the 3,000 B.C, with predecessors reaching into the late 4th millennium (the Uruk IV period), cuneiform writing began as a system of pictographs.