Method for controlling coasting guide function

1. A computer-readable storage medium having instructions stored thereon for controlling a coasting guide function of a vehicle that, when executed at a control unit of the vehicle, causes the control unit to:

detect a speed limit and an average speed of a peripheral vehicle;

detect a valid speed limit when a coasting event occurs;

calculate a target speed by using a speed factor computed by using at least one of the valid speed limit, the average speed of the peripheral vehicle, or a current speed; and

provide a coasting guide to a driver of the vehicle according to the calculated target speed.

2. The computer-readable storage medium of claim 1 , further causes the control unit to:

determine a coasting guide start point by using data acquired by making a coasting point of a driver into a database with respect to each coasting event.

3. The computer-readable storage medium of claim 1 , further causes the control unit to:

determine a coasting guide transition point by using data acquired by making a braking start point of the driver into the database with respect to each coasting event.

4. The computer-readable storage medium of claim 1 causes the control unit to:

detect the speed limit from navigation information; and

collect speed flows of a vehicle from a front side of the vehicle, a rear side of the vehicle, and a rear lateral side of the vehicle as data to detect the average speed of the peripheral vehicle.

5. The computer-readable storage medium of claim 1 , wherein the valid speed limit comprises:

at least one of the speed limit of a road in which the vehicle currently travels, the speed limit of the road after the coasting event, or the speed limit of a target point.

6. The computer-readable storage medium of claim 5 causes the control unit to:

when the road in which the vehicle currently travels is a highway or an expressway, determine that the speed limit of the road in which the vehicle currently travels is the valid speed limit; and

when the road in which the vehicle currently travels is not the highway or the expressway, determine that the speed limit of the target point is the valid speed limit.

7. The computer-readable storage medium of claim 5 causes the control unit to:

when the road after the coasting event is the highway or the expressway, determine that the speed limit of the road after the coasting event is the valid speed limit; and

when the road after the coasting event is not the highway or the expressway, determine that the speed limit of the target point is the valid speed limit.

8. The computer-readable storage medium of claim 1 causes the control unit to:

use the speed factor as a ratio of the current speed to at least one of the valid speed limit or the average speed of the peripheral vehicle.

9. The computer-readable storage medium of claim 8 causes the control unit to:

when the ratio of the average speed of the peripheral vehicle to the valid speed limit is greater than a predetermined value, use the valid speed limit to calculate the speed factor; and

when the ratio of the average speed of the peripheral vehicle to the valid speed limit is less than the predetermined value, use the average speed of the peripheral vehicle to calculate the speed factor.

10. The computer-readable storage medium of claim 8 causes the control unit to:

calculate the target speed as a value that is acquired by multiplying an existing target speed set with respect to each coasting event by the speed factor.

11. The computer-readable storage medium of claim 2 causes the control unit to:

determine each of a maximum value and a minimum value at the coasting guide start point by using the data acquired by making the coasting point of the driver into the database.

12. The computer-readable storage medium of claim 11 causes the control unit to:

when the coasting point of the driver is greater than the maximum value or less than the minimum value, control the coasting guide start point to place the coasting guide start point between the maximum value and the minimum value.

13. The computer-readable storage medium of claim 11 causes the control unit to:

display whether a driving speed of the driver is faster or slower than a driving speed of a general driver in an area between the maximum value and the minimum value at the coasting guide start point.

14. The computer-readable storage medium of claim 3 causes the control unit to:

determine each of the maximum value and the minimum value at the coasting guide transition point by using the data acquired by making the braking start point of the driver into the database.

15. The computer-readable storage medium of claim 14 causes the control unit to:

when the braking start point of the driver is greater than the maximum value or less than the minimum value, control the coasting guide transition point to place the coasting guide transition point between the maximum value and the minimum value.

16. The computer-readable storage medium of claim 14 causes the control unit to:

display an active control transition scheduled time in the area between the maximum value and the minimum value at the coasting guide transition point.