The described method and system provide for adaptable GPS navigation based on road and traffic conditions. A method includes: receiving input front a user designating a destination; determining a calculated route from a starting point to the destination; and presenting turn-by-turn (TBT) directions based on the route, wherein the presenting of the TBT directions includes presenting conditions information received from an external source. The conditions information can be used during route calculation and can be updated while the user is traveling on the calculated route.