BR-0X0 – start at the DF-001 in the
Federal District and head towards the extremes of the country. Radial highways are identified by the first digit "0", and the other two vary between 10 and 90, always in multiples of ten, each one heading in a different direction clockwise from the DF-001. The direction of the distance starts from the DF-001, with the
kilometre zero of each state being at the point of the highway closest to the federal capital. There are nine federal radial highways, including the
BR-090, which has not yet been completed. == North-south highways ==