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 earliest writing of which we have any historic example is the hieroglyphic writing of the ancient Egyptians; [Page 237] and the earliest of early hieroglyphs are carved in relief. The oldest Egyptian inscriptions are older than the Great Pyramid.