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.
And while it is not the only living logographic writing system in the modern world, it is the only one serving as the primary writing system for hundreds of millions of people. The first recognizable form of Chinese writing dates from 3,500 years ago, but many argue that its origins lie much deeper in the past. Regardless of its actual age, Chinese has evolved substantially over time yet has retained its ancient core, making it one of the longest continuously used writing system in the world.