I have always struggled to truly understand the meaning of 'practicable' as used in bicycling regulations so often, such as "shall ride as far to the right as practicable". Today I had conversation with a local police officer while at our daughter's soccer games. 'Practicable' came up, and he explained it like this-
It is possible to stand right behind a closed door, but not practicable because when that door is opened, you'll get hit.
Any thoughts on that explanation? Is it an accurate way to tell the difference between possible/practicable?