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 development of writing People living in southern Mesopotamia developed one of the earliest writing systems in the world. The system was developed so that information could be recorded. This writing system began with pictures or signs drawn on clay tablets.