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.
The Sumerian language is one of the earliest known written languages. The proto-literate period of Sumerian writing spans c. 3,300 to 3,000 BC. In this period, records are purely logographic, with no linguistic or phonological content.The oldest document of the proto-literate period is the Kish tablet.rchaic Sumerian is the earliest stage of inscriptions with linguistic content, beginning with the Jemdet Nasr (Uruk III) period from about the 31st to 30th centuries BC. It succeeds the proto-literate period, which spans roughly the 35th to 30th centuries.