Vehicle constant-speed travel control apparatus, vehicle constant-speed travel control method, and computer readable medium

A vehicle constant-speed travel control method by a computer storing number-of-operations information in which a plurality of conditions of the vehicle is defined and number of acceleration operations and number of deceleration operations performed by the vehicle are described for each condition defined, the method comprising:

• detecting a current condition of the vehicle, when the vehicle travels at a constant speed, extracting number of acceleration operations and number of deceleration operations described for a condition corresponding to the detected current condition of the vehicle from the number-of-operations information, comparing the extracted number of acceleration operations with the extracted number of deceleration operations, specifying a correction speed higher than a set speed for a constant-speed travel if the number of acceleration operations is larger than the number of deceleration operations, and specifying a correction speed lower than the set speed if the number of deceleration operations is larger than the number of acceleration operations;
• and
• making the vehicle travel at a constant speed based on the specified correction speed.

A non-transitory computer readable medium storing a vehicle constant-speed travel control program to cause, a computer storing number-of-operations information in which a plurality of conditions of the vehicle is defined and number of acceleration operations and number of deceleration operations performed by the vehicle are described for each condition defined, to execute:

• a correction speed specifying process of detecting a current condition of the vehicle, when the vehicle travels at a constant speed, extracting number of acceleration operations and number of deceleration operations described for a condition corresponding to the detected current condition of the vehicle from the number-of-operations information, comparing the extracted number of acceleration operations with the extracted number of deceleration operations, specifying a correction speed higher than a set speed for a constant-speed travel if the number of acceleration operations is larger than the number of deceleration operations, and specifying a correction speed lower than the set speed if the number of deceleration operations is larger than the number of acceleration operations;
• and
• a constant-speed travel control process of making the vehicle travel at a constant speed based on the correction speed specified in the correction speed specifying process.