A method for route guidance and a device therefor

A navigation device 100 for route guidance is disclosed. The navigation device 100 comprises a reception module 101 to receive a desired drive time to reach a destination. A calculation means 102 of the navigation device 100 calculates a remaining desired drive time from a current location to the destination. An estimation module 103 estimates a drive time corresponding to at least one route style from the current location to the destination. A comparison module 104 compares the remaining desired drive time with the estimated drive time. A determination module 105 determines a route style to reach the destination in the desired drive time depending on the comparison.