System for controlling vehicle speed

A system for controlling a speed, the system comprising:

• a route setting device configured to:
• receive map update information from an outside of a vehicle in real time to update a map;
• plan a driving route to a destination set by a driver, based on the map;
• and
• provide information on the driving route as driving route information;
• a mode selecting device configured to provide any one of real-time driving mode activation information, off-line driving mode activation information, and driver driving mode activation information, based on whether vehicle driving mode selection information, which is selected by the driver, and the map update information are received;
• a real-time driving controller configured to generate real-time driving control information, based on driving route information for a preset position in front of a host vehicle, among the driving route information, in response to the real-time driving controller being activated by receiving the real-time driving mode activation information;
• an off-line driving controller configured to generate off-line driving control information, based on driving route information for a current position of the host vehicle, among the driving route information, in response to the off-line driving controller being activated by receiving the off-line driving mode activation information;
• a driver driving controller configured to transmit driver handling information, which serves as driver driving control information, in response to the driver driving controller being activated by receiving the driver driving mode activation information;
• and
• a vehicle control output interface configured to provide any one that is received from among the real-time driving control information, the off-line driving control information, and the driver driving control information, to an engine control system, a braking control system, and a steering control system.