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.
Spoken Chinese has changed remarkably over the centuries, while Chinese writing has changed little from the ancient Chinese. The Chinese writing system has changed little, but there are four distinct periods of Chinese writing. The four phases of Chinese writing are: Jia-gu wen (Oracle Bone). This is the earliest of Chinese symbols. Samples of writing using this method date back to (1500 â 1000 B.C.).