What is a mayor road?
No idea, maybe it's major road that you mean. That is usually a highway or interstate-it's major 4 lanes or more, often tolls
Do you mean "major" road?There really isn't a definition of a major road. In the US, the standard classifications of roads are based on their function. ArterialCollectorLocalhttp://www.fhwa.dot.gov/environment/publications/flexibility/ch03.cfm