Vehicle travel control apparatus

A vehicle travel control apparatus comprising:

• a switch provided in a vehicle and configured to be operated by a driver, the switch including a speed increasing switch configured to be switched to an on state when a pressing operation is performed on the speed increasing switch, and configured to be switched to an off state when the pressing operation is not performed on the speed increasing switch;
• a vehicle controller configured to execute constant speed travel control for causing the vehicle to travel such that a travel speed of the vehicle matches a target speed, the vehicle controller being further configured to execute a target speed increasing process of increasing the target speed by a predetermined speed increase amount at a predetermined timing within a time period between a first turned-on time point at which the speed increasing switch is switched from the off state to the on state and a first turned-off time point at which the speed increasing switch is switched from the on state to the off state;
• a display configured to display a setting screen which allows the driver to change at least the speed increase amount;
• and
• a memory configured to store at least the speed increase amount which has been changed on the setting screen, wherein
• the vehicle controller is configured to execute the target speed increasing process in accordance with the speed increase amount which has been stored in the memory,
• the vehicle controller is configured to increase the target speed by using a first increase amount and a second increase amount as the speed increase amount in the target speed increasing process;
• the vehicle controller is configured to execute a first increasing process and a second increasing process as the target speed increasing process;
• the first increasing process is a process of increasing the target speed by the first increase amount at the first turned-on time point or a process of increasing the target speed by the first increase amount at the first turned-off time point in a case where the first turned-off time point is a point in time before a predetermined first long press time elapses from the first turned-on time point;
• the second increasing process is a process performed in a case where the on state of the speed increasing switch continues from the first turned-on time point for the first long press time or longer, and performed such that, after elapse of the first long press time from the first turned-on time point, the process increases the target speed stepwise, until the first turned-off time point, by the second increase amount every time a first interval time elapses;
• the display is configured to display, as the setting screen, a screen which allows the driver to change the first increase amount, the second increase amount, and the first interval time;
• the memory is configured to store the first increase amount, the second increase amount, and the first interval time which have been changed on the setting screen;
• and
• the vehicle controller is configured to execute the target speed increasing process in accordance with the first increase amount, the second increase amount, and the first interval time which have been stored in the memory.