This is called negative pressure breathing, changing the pressure inside thelunsg relative to the pressure of the outside atmosphere. In contrast to inspiration, during expiration the diaphragm and intercostal muscles relax.
15' wide is too narrow for a double wide driveway and too wide for a single car and should not be used as a driveway dimension unless there is a reason. Driveway Width. 10 - 12 feet wide for a Single Car driveway. 14 feet wide if Surrounded by Walls. 18 - 20 feet wide for a Double Wide driveway.
The minimum thickness of driveway approaches for single or two- family dwellings is 5 inches (125 mm) from the roadway edge back 20 feet (6.1 m) or to the property line, whichever is less, with any remaining portion within the public right-of-way