HL - Chapter 1 - Vehicle Ops - Unit 3 Lesson 1 Flashcards
Pitch
occurs during acceleration or braking and causes the transfer of a vehicle’s weight from front to rear or rear to front
Roll
occurs when turning. This shifts the vehicle’s weight from side to side
Yaw
the transfer of a vehicle’s weight causing an end for- end motion resulting in the vehicle turning 180° on a horizontal plane
Radius
the distance from the center of a circle to the outside
Increasing radius
a turn that gets wider during the turn
Decreasing radius
a turn that gets tighter during the turn
Constant radius
a turn that remains the same throughout
Understeer
the tendency of a vehicle to turn less sharply than the driver intends. * excessive speed
* lack of traction on the steering tires
* improper braking in a turn or curve
Oversteer
the tendency of a vehicle to steer into a sharper turn than the driver intends, sometimes with a loss of traction of the rear to the outside. * * Occurs at higher speeds when the rear tires lose traction and excessive braking occurs in a turn or curve
The correction for understeer
remove the foot from the accelerator, maintain steering input but not apply brakes
The correction for oversteer
remove the foot from the accelerator and/or brake, steer the car where desired, refrain from applying the brakes
Wheel tracking
causes the rear wheels to follow a tighter path than the path the front wheels traveled in a turn.
Eye Targeting
looking in the desired direction of travel to avoid an obstacle and to avoid steering in the direction of the obstacle