Vehicle traveling control system

A vehicle traveling control system according to claim 4, further comprising:

• a wheel brake cylinder mounted in a vehicle wheel;
• a master cylinder operatively connected to a brake operating member and generating hydraulic pressure in response to a driver's brake operating member operation;
• and
• an actuator supplied with the hydraulic pressure from the master cylinder and independently adjusting brake hydraulic pressure to be supplied to the wheel brake cylinder,
• wherein the braking force actually being applied is estimated based upon the brake hydraulic pressure supplied to the wheel brake cylinder.

A vehicle traveling control system comprising:

• a vehicle speed calculating means for calculating a vehicle speed;
• a target brake hydraulic pressure calculating means for calculating a target brake hydraulic pressure required for maintaining the vehicle speed at or less than a predetermined upper threshold vehicle speed;
• a torque-up operation judging means for judging whether or not the torque-up operation has been performed;
• a first comparing means for comparing the target brake hydraulic pressure with a first predetermined value when the torque-up operation is judged to have been performed;
• a torque-up operation terminating means for terminating the torque-up operation when the target brake hydraulic pressure exceeds the first predetermined value;
• a target brake hydraulic pressure recalculating means for recalculating the target brake hydraulic pressure required for maintaining the vehicle speed at or less than the predetermined upper threshold vehicle speed when the torque-up operation has not been performed;
• and
• a brake hydraulic pressure controlling means for controlling a brake hydraulic pressure based upon the recalculated target brake hydraulic pressure.