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A method of and apparatus for generating an alternate route for a system to travel to a predetermined destination are described. The method comprises determining a velocity of a system traveling along a primary route; and generating an alternate route to the primary route if the system velocity is b

A method of and apparatus for generating an alternate route for a system to travel to a predetermined destination are described. The method comprises determining a velocity of a system traveling along a primary route; and generating an alternate route to the primary route if the system velocity is below a predetermined motion threshold. A navigation system for generating an alternate route to a destination includes a motion sensor for detecting the navigation system velocity along a primary route and a controller coupled with the motion sensor. The controller receives a motion signal indicating navigation system motion and generates an alternate route to the primary route responsive to the motion signal indicating navigation system motion different from a predetermined motion threshold value.

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What is claimed is: 1. A method implemented on a navigation system installed on a vehicle to generate an alternate route for the vehicle to travel to a predetermined destination, the method comprising: receiving, by the navigation system, a detour distance; receiving, by the navigation system, a pr

What is claimed is: 1. A method implemented on a navigation system installed on a vehicle to generate an alternate route for the vehicle to travel to a predetermined destination, the method comprising: receiving, by the navigation system, a detour distance; receiving, by the navigation system, a predetermined timeout value; determining, using a motion sensor installed on the vehicle, a velocity of the vehicle on which the navigation system is installed, while the vehicle is traveling along a primary route; determining whether the velocity of the vehicle has been below a predetermined vehicle motion threshold for a time period exceeding the predetermined timeout value; and generating, by the navigation system automatically, an alternate route to guide the vehicle to travel to the predetermined destination on a detour of the primary route in accordance with the detour distance, in response to a determination that the velocity of the vehicle on which the navigation system is installed has been below the predetermined vehicle motion threshold for a time period exceeding the predetermined timeout value. 2. A method according to claim 1, further comprising: presenting a user interface to receive a timeout value from a user of the navigation system as the predetermined timeout value. 3. A method according to claim 1, further comprising: receiving a user response regarding generating an alternate route. 4. A method according to claim 3, further comprising: prompting a user of the navigation system to decide whether to use the alternate route; wherein the alternate route is generated before the user is prompted to decide whether to use the alternate route. 5. A method according to claim 1, further comprising: presenting a user interface to receive the detour distance from a user of the navigation system. 6. A method according to claim 5, wherein the detour distance is a user-specified, custom detour distance. 7. A method according to claim 1, further comprising: providing route information to a user based on the generated alternate route. 8. A method according to claim 1, further comprising: presenting a user interface to allow a user of the system to enable or disable an option for the navigation system to automatically compute a detour route when the velocity of the vehicle has been below a predetermined vehicle motion threshold for a time period exceeding the predetermined timeout value; wherein the generating of the alternate route is performed if the option is enabled via the user interface. 9. A method according to claim 3, wherein the user response includes a user request for generation of an alternate route. 10. A method according to claim 9, wherein the user response further includes at least one of a user-specified vehicle motion threshold, a user-specified timeout value, and a user-specified detour distance. 11. A navigation system installed on a vehicle to generate an alternate route to a destination, the navigation system comprising: a motion sensor configured to generate a motion signal indicative of a velocity of the vehicle while the vehicle is travelling along a primary route; and a controller operatively coupled with the motion sensor and arranged to receive the motion signal, the controller arranged to: receive a detour distance; receive a predetermined timeout value; determine whether the velocity of the vehicle, on which the navigation system is installed, has been below a predetermined vehicle motion threshold for a time period exceeding the predetermined timeout value; and generate automatically an alternate route to guide the vehicle to travel to the destination on a detour of the primary route in accordance with the detour distance, responsive to the motion signal being below the predetermined vehicle motion threshold for a time period exceeding the predetermined timeout value. 12. A navigation system according to claim 11, further comprising: a user interface to receive a timeout value from a user of the navigation system as the predetermined timeout value. 13. A navigation system according to claim 11, further comprising: a user interface to receive the detour distance from a user of the navigation system. 14. A navigation system according to claim 11, further comprising: a user interface device operatively coupled with the controller and arranged to provide information to a user and receive user commands. 15. A navigation system according to claim 14, wherein the user interface device is arranged to receive a user response regarding generation of an alternate route. 16. A navigation system according to claim 15, wherein the user response includes a user request for generation of an alternate route; and wherein the controller is arranged to generate the alternate route if the user requests generation of the alternate route. 17. A navigation system according to claim 15, wherein the user response includes at least one of a user-specified vehicle motion threshold, a user-specified timeout value, and a user-specified detour distance. 18. A computer-readable medium storing instructions which, when executed by a processor of a navigation system installed on a vehicle, cause the processor to perform a method, the method comprising: receiving a detour distance; receiving a predetermined timeout value; determining, using a motion sensor installed on the vehicle, a velocity of the vehicle while the vehicle is traveling along a primary route; determining whether the velocity of the vehicle on which the navigation system is installed has been below a predetermined vehicle motion threshold for a time period exceeding the predetermined timeout value; and generating, automatically, an alternate route to guide the vehicle to travel to the predetermined destination on a detour of the primary route based on the detour distance, in response to a determination that the velocity of the vehicle on which the navigation system is installed has been below the predetermined vehicle motion threshold for a time period exceeding the predetermined timeout value. 19. The computer-readable medium of claim 18, wherein the computer-readable medium comprises a memory.