Abstract: A driving support system detects a deceleration object ahead and starts deceleration assistance for a host vehicle. The driving support system includes a reliability calculation unit configured to calculate a reliability of detection of the deceleration object, an assistance mode selection unit configured to select an assistance mode of the deceleration assistance from among multiple assistance modes in accordance with the calculated reliability of detection, and a driving support unit configured to perform the deceleration assistance in the selected assistance mode. The assistance mode selection unit is configured to select a first assistance mode when the reliability of detection is lower than a predetermined reliability threshold and select a second assistance mode higher in a level of the deceleration assistance than the first assistance mode when the reliability of detection is higher than or equal to the reliability threshold.

Abstract: A driving assistance apparatus can provide deceleration assistance of decelerating a host vehicle independently of an operation by a driver. The driving assistance apparatus is provided with: a specifier configured to specify a type of a target associated with the deceleration assistance, wherein the target is ahead of the host vehicle on a course thereof and requires the host vehicle to decelerate or stop; and a controller programmed to change an end condition associated with deceleration assistance, in accordance with the specified type.

Abstract: A driving assistance apparatus is provided with: a recognizer configured to recognize a surrounding situation of a host vehicle; a controller programmed to execute a deceleration assistance control of assisting in decelerating a host vehicle when a predetermined condition is satisfied; a determinator configured to determine whether or not the host vehicle is traveling on a roadway on the basis of the recognized surrounding situation; and a restraining device configured to restrain execution of the deceleration assistance control by a controller if it is determined that the host vehicle is not traveling on a roadway, in comparison with a situation in which it is determined that the host vehicle is traveling on a roadway.

Abstract: A driving assistance apparatus can execute deceleration assistance of decelerating a host vehicle independently of an operation by a driver. The driving assistance apparatus is provided with: an acquirer configured to obtain surrounding information associated with a surrounding situation of the host vehicle; and a controller programmed to reduce a deceleration assistance amount associated with the deceleration assistance when execution of the deceleration assistance is released. The controller is programmed to quickly reduce the deceleration assistance amount when execution of the deceleration assistance is released, if a surrounding situation indicated by the obtained surrounding information is a first situation in which the host vehicle can be required to accelerate, in comparison with a second situation in which the host vehicle cannot be required to accelerate.

Abstract: A transmission includes a transmission housing member, a ring portion, a high speed shaft, a third roller, and a third plate bearing, which rotatably supports the third roller. The transmission housing member includes a first supporting surface, which restricts the third roller to a first position, and a second supporting surface, which restricts the third roller to a second position. The third roller is moved within a movement range from the first position to the second position. The movement range includes a specified range in which the third roller is not supported, in a radial direction of the high speed shaft, by the transmission housing member with the third plate bearing in between, but is supported by being held between the ring portion and the high speed shaft.

Abstract: A driving assistance apparatus includes an estimator and a controller. The estimator estimates a first estimated vehicle speed and a second estimated vehicle speed when there are a first deceleration target and a second deceleration target in a course ahead of a vehicle, and when a driver of the vehicle releases an accelerator pedal. Wherein the first estimated vehicle speed is an estimated vehicle speed of the vehicle at a first target position corresponding to the first deceleration target, and the second estimated vehicle speed is an estimated vehicle speed of the vehicle at a second target position corresponding to the second deceleration target. The controller controls the vehicle to automatically decelerate toward the second target position when the first estimated vehicle speed is greater than a first predetermined value, and when the second estimated vehicle speed is less than a second predetermined value.

Abstract: A driving assistance apparatus can execute a deceleration assistance control, when there is a deceleration target ahead, of the vehicle in a course thereof. The driving assistance apparatus is provided with: a recognizer configured to recognize a surrounding situation of the vehicle; and a controller programed to execute the deceleration assistance control when a predetermined condition is satisfied. The controller is programed to suppress execution of the deceleration assistance control if a road as the recognized surrounding situation has a high extent of a downgrade, in comparison with a situation in which the road has a low extent of the downgrade.

Abstract: A driving assistance apparatus can execute a deceleration assistance control, when there is a deceleration target ahead, of the vehicle in a course thereof. The driving assistance apparatus is provided with: a recognizer configured to recognize a surrounding situation of the vehicle; and a controller programed to execute the deceleration assistance control when a predetermined condition is satisfied. The controller is programed to suppress execution of the deceleration assistance control if a road as the recognized surrounding situation has a high extent of a downgrade, in comparison with a situation in which the road has a low extent of the downgrade.

Abstract: A stop line position estimation device includes a traffic signal recognition unit configured to recognize a traffic signal at an intersection ahead of a vehicle and a stop line position estimation unit configured to estimate that a position of the stop line is a position from the traffic signal by a first distance toward the vehicle side. When the traffic signal recognition unit recognizes a plurality of traffic signals and the stop line position estimation unit recognizes an immediate front traffic signal and a rear traffic signal based on a positional relationship between the traffic signals, the stop line position estimation unit estimates that the position of the stop line is a position from the immediate front traffic signal by a second distance toward the vehicle side. The second distance is shorter than the first distance.

Abstract: There is provided a driving assistance device that executes deceleration assistance of a host vehicle when a relative situation between a deceleration object in front of the host vehicle and the host vehicle satisfies a preset deceleration assistance precondition and a driver of the host vehicle does not operate an accelerator and a brake, the driving assistance device including a first deceleration assistance execution unit configured to execute a first deceleration assistance when the deceleration assistance precondition is satisfied in a state in which the driver of the host vehicle does not operate the accelerator and the brake, and a second deceleration assistance execution unit configured to execute a second deceleration assistance when the driver releases the accelerator or the brake in a state in which the deceleration assistance precondition is satisfied.

Abstract: A driving assistance apparatus performs a stop control of stopping a host vehicle so that a following distance between the host vehicle and a stopped vehicle, which is ahead in a course of the host vehicle, approaches a target following distance. The driving assistance apparatus is provided with: a setting device configured to set the target following distance smaller, if an operation speed is less than a predetermined speed, in comparison with that if the operation speed is greater than the predetermined speed when one of an acceleration off operation and a brake off operation is performed, or when one of an accelerator opening degree corresponding to an operation amount of an accelerator pedal and a brake opening degree corresponding to an operation amount of a brake pedal is less than or equal to a predetermined opening degree, while the stopped vehicle is recognized.

Abstract: A pressure relief passage includes a first pressure relief passage and a second pressure relief passage. A pressure relief hole is provided in an upper part of the first pressure relief passage in the direction of gravitational force. The second pressure relief passage merges with the first pressure relief passage to form a merging portion. The cross-sectional flow area of a stagnation portion, which is the maximum cross-sectional flow area of the second pressure relief passage, is smaller than the cross-sectional flow area of a connection passage, which is the minimum cross-sectional flow area of the first pressure relief passage.

Abstract: A pressure relief passage includes a first pressure relief passage and a second pressure relief passage. A pressure relief hole is provided in an upper part of the first pressure relief passage in the direction of gravitational force. The second pressure relief passage merges with the first pressure relief passage to form a merging portion. The cross-sectional flow area of a stagnation portion, which is the maximum cross-sectional flow area of the second pressure relief passage, is smaller than the cross-sectional flow area of a connection passage, which is the minimum cross-sectional flow area of the first pressure relief passage.

Abstract: When a driver is not in pedal erroneous operation inducing situation and a rate of change in an operation amount of an accelerator pedal is equal to or greater than a first erroneous operation determination threshold value, a driving assistance apparatus determines that operation of the accelerator pedal is erroneous operation. When the driver is in the pedal erroneous operation inducing situation and the rate of change in the operation amount of the accelerator pedal is equal to or greater than a second erroneous operation determination threshold value, the riving assistance apparatus determines that the operation of the accelerator pedal is the erroneous operation, and the second erroneous operation determination threshold value is smaller than the first erroneous operation determination threshold value.

Abstract: A driving support system detects a deceleration object ahead and starts deceleration assistance for a host vehicle. The driving support system includes a reliability calculation unit configured to calculate a reliability of detection of the deceleration object, an assistance mode selection unit configured to select an assistance mode of the deceleration assistance from among multiple assistance modes in accordance with the calculated reliability of detection, and a driving support unit configured to perform the deceleration assistance in the selected assistance mode. The assistance mode selection unit is configured to select a first assistance mode when the reliability of detection is lower than a predetermined reliability threshold and select a second assistance mode higher in a level of the deceleration assistance than the first assistance mode when the reliability of detection is higher than or equal to the reliability threshold.

Abstract: A driver assistance device is configured to determine whether a type of a deceleration target is included in a category of a position-fixed object or a moving object, and determine whether the deceleration target is lost, and to continue the deceleration assistance on assumption that the lost deceleration target exists when the deceleration target is determined to be lost. The driver assistance device is configured to notify a driver of a host vehicle that the deceleration target is lost when the deceleration target is determined to be lost and the type of the deceleration target is included in the category of the moving object, and not to notify the driver that the deceleration target is lost when the deceleration target is determined to be lost and the type of the deceleration target is included in the category of the position-fixed object.

Abstract: A vehicle control apparatus is provided with: an acquirer configured to obtain an expected end timing of a first deceleration support control, which is a deceleration support control for a first target, and an expected start timing of a second deceleration support control, which is the deceleration support control for a second target, if there is the first target as a deceleration target ahead of a host vehicle in the traveling direction and if there is the second target as the deceleration target ahead of the first target; and a controller programmed or configured to perform an interpolation deceleration support control of interpolating the first deceleration support control and the second deceleration support control, in a predetermined period including at least a part of an interval between the expected end timing and the predicted start timing, if the interval is less than a first time.

Abstract: A driving assistance apparatus includes: a recognition unit that recognizes a lighting and a progressing-permitted direction of an arrow type traffic signal based on an external sensor; a comparison unit that compares the progressing-permitted direction with a scheduled progressing direction of a vehicle; an assistance unit that performs a driving assistance based on a result of comparison performed by the comparison unit; a determination unit that determines a travel state of a surrounding vehicle of the vehicle based on the external sensor; and an estimation unit that estimates the progressing-permitted direction of the arrow type traffic signal based on a result of determination performed by the determination unit, wherein the comparison unit compares the progressing-permitted direction and the scheduled progressing direction of the vehicle, when the lighting of the arrow type traffic signal is recognized by the recognition unit and the progressing-permitted direction is not recognized.

Abstract: A driving assistance apparatus is configured to determine whether a preset deceleration assistance start condition is satisfied, start deceleration assistance for a driver's vehicle against a first deceleration-triggering object, determine whether a preset deceleration assistance termination condition is satisfied, issue a deceleration assistance termination notification to a driver of the driver's vehicle, determine whether a second deceleration-triggering object is detected ahead of the driver's vehicle, and determine whether a preset quick resumption condition is satisfied. The driving assistance apparatus is configured not to issue the deceleration assistance termination notification when the driving assistance apparatus determines that the quick resumption condition is satisfied, even in a case where the driving assistance apparatus determines that the deceleration assistance termination condition for the first deceleration-triggering object is satisfied.

Abstract: A driving assistance device that assists in driving a vehicle that travels toward a traffic light with an arrow signal includes a recognizing unit that recognizes lighting of the arrow signal and a travelable direction, based on a detection result of an external sensor for sensing an external environment of the vehicle, and an assisting unit that performs first assistance including at least one of speed-reduction assistance for reducing the vehicle speed and informing assistance for prompting speed reduction of the vehicle, when the recognized travelable direction of the arrow signal is different from an expected traveling direction of the vehicle. When lighting of the arrow signal is recognized by the recognizing unit, and the travelable direction of the arrow signal is not recognized by the recognizing unit, the assisting unit performs second assistance having a smaller degree of assistance than the first assistance, until the travelable direction is recognized.