METHOD AND APPARATUS FOR PROVIDING ROUTE GUIDANCE

A route guidance apparatus includes: a reservation information communications unit to receive reservation information which includes at least one of a parking-reserved space of the parking lot, a vehicle type, a vehicle number, and a parking time; a reserved vehicle recognition unit to recognize a vehicle number of a reserved vehicle and determine whether the reserved vehicle enters or exits the parking lot; a traffic flow determination unit that divides an area of each floor of the parking lot into a plurality of unit areas and calculates density within the parking lot based on the number of vehicles within each divided unit area; and a parking route generation unit and an exit route generation unit that respectively generate an optimal parking route and an optimal exit route based on the calculated density; and a route guidance unit to provide the user with the generated optimal parking and exit routes.