blue_sky,bus,car,caterpillar_tracks,cloud,cloudy_sky,day,desert,driving,ground_vehicle,hill,landscape,logo,military,military_vehicle,motion_blur,motor_vehicle,mountain,mountainous_horizon,ocean,on_vehicle,road,seat,seatbelt,sky,steering_wheel,street,tank,tank_focus,tire,train,truck,vehicle_focus,wheel,rating:safe