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.
Minimum lane width: Minimum lane width of 12 feet (3.7 m). Also for most US and state highways. Shoulder width: Minimum outside paved shoulder width of 10 feet (3.0 m) and inside shoulder width of 4 feet (1.2 m). With three or more lanes in each direction, the inside paved shoulder should be at least 10 feet (3.0 m) wide.