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.
For now the Chinese scholars are calling the markings primitive writing, a vague term that suggests they are somewhere between symbols and words. The oldest known Chinese writing has been found on animal bones (known as oracle bones) dating to 3,600 years ago, at the time of the Shang dynasty.