Automatic transmission for vehicle

A planetary gear train apparatus of an automatic transmission for a vehicle, the planetary gear train apparatus comprising:

• an input shaft receiving torque of an engine;
• an output shaft outputting torque;
• a first planetary gear set including a first rotation element, a second rotation element, and a third rotation element;
• a second planetary gear set including a fourth rotation element, a fifth rotation element, and a sixth rotation element;
• a third planetary gear set including a seventh rotation element, an eighth rotation element, and a ninth rotation element;
• a fourth planetary gear set including a tenth rotation element, an eleventh rotation element, and a twelfth rotation element;
• a fifth planetary gear set including a thirteenth rotation element, a fourteenth rotation element, and a fifteenth rotation element;
• a first shaft fixedly connected to the third rotation element and the input shaft;
• a second shaft fixedly connected to the eighth rotation element and the eleventh rotation element;
• a third shaft fixedly connected to the fourteenth rotation element and the output shaft;
• a fourth shaft fixedly connected to the second rotation element;
• a fifth shaft fixedly connected to the sixth rotation element and the seventh rotation element;
• and
• a sixth shaft fixedly connected to the ninth rotation element and the fifteenth rotation element,
• wherein the plurality of shafts comprise:
• a seventh shaft fixedly connected to the first rotation element and the fourth rotation element and selectively connectable to the transmission housing;
• an eighth shaft fixedly connected to the fifth rotation element and the twelfth rotation element and selectively connectable to the transmission housing;
• and
• a ninth shaft fixedly connected to the tenth rotation element and the thirteenth rotation element and selectively connectable to the transmission housing, and
• wherein the input shaft is selectively connectable to the second shaft, the input shaft is selectively connectable to the sixth shaft, and the second shaft is selectively connectable to the fourth shaft.