Truck Driving School Costs. The average length of PTDI-certified courses is four to six weeks, though courses may be as short as two weeks or as long as 12 weeks or more. The average cost of PTDI-certified courses is about $4,200, though the cost of truck driving school may be as low as $1,500 and as high as $10,000.
Orthopnea is the opposite of platypnea, shortness of breath that worsens when sitting or standing up.
The platypus is an egg-laying mammal. A female platypus lays up to three eggs in late winter or spring and incubates them between her lower belly and curled-up tail for about ten days as she rests in an underground nest lined with soft leaves. A female platypus does not have nipples.