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.
A stone slab with 3,000-year-old writing, the Cascajal Block, was discovered in the Mexican state of Veracruz, and is an example of the oldest script in the Western Hemisphere, preceding the oldest Zapotec writing dated to about 500 BC.