CNN	Convolution Neural Network
SVM	Support Vector Machine
RBF Kernel	Radial Basis Function Kernel
Auxiliary wheel	Auxiliary wheels present in the tires of light-rail wheels
Railcar axle	Central axis around which the train’s wheels rotate
Bayesian Optimization	One of the deep-learning parameter optimization methods
Light rail	Lighter railway vehicle than existing railway vehicles
Wheel truck	Wheel mounting location
Tire bead	Part where the tire and wheel (rim) come into contact with each other
Tread surface	Part that is in direct contact between the wheels and the road