Coasting distance determination for coasting assistance system

A vehicle approaching an intersection where the vehicle will turn, the vehicle comprising:

• a speed sensor configured to detect vehicle speed data;
• a pedal unit connected to a brake pedal and configured to detect brake pedal position data;
• an electronic control unit (ECU) connected to the speed sensor and the pedal unit, the ECU configured to:
• detect when the brake pedal is engaged and released based on the brake pedal position data,
• detect a vehicle speed when the brake pedal is released based on the vehicle speed data,
• determine, at a first time, whether the intersection is a green light intersection or a red light intersection based on the vehicle speed when the brake pedal is released, and
• detect, at a second time, when the vehicle is approaching the intersection;
• and
• a display connected to the ECU and configured to display, at the second time, a coasting assistance instruction including the green light coasting distance when the intersection is the green light intersection or the red light coasting distance when the intersection is the red light intersection.

A method of adjusting timing of coasting assistance provided by a vehicle that is approaching an intersection where the vehicle will turn or is programmed or scheduled to turn, the method comprising:

• detecting, by a speed sensor, vehicle speed data;
• detecting, by a pedal unit connected to a brake pedal, brake pedal position data;
• detecting, by an electronic control unit (ECU) connected to the speed sensor and the pedal unit, when the brake pedal is engaged and released based on the brake pedal position data;
• detecting, by the ECU, a vehicle speed when the brake pedal is released;
• determining, by the ECU at a determination time, whether the intersection is a green light intersection or a red light intersection based on the vehicle speed when the brake pedal is released;
• detecting, by the ECU at an application time, when the vehicle is approaching the intersection;
• and
• displaying, by a display connected to the ECU at the application time, a coasting assistance instruction including the green light coasting distance when the intersection is the green light intersection or the red light coasting distance when the intersection is the red light intersection.