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.
Among languages spoken today, the Tamil language is the oldest written language among Indian languages. Between the 3rd century BC and the 3rd century AD, Tamil people produced native literature that came to be called Sangam literature.