- incapable of being passed
- Impassibility (from Latin in-, "not", passibilis, "able to suffer, experience emotion") describes the theological doctrine that God does not experience pain or pleasure from the actions of another being. ...
- Snow cover thick enough to make road impassable for normal vehicles. This description is also valid when a road is impassable for other reasons, such as landslides, water floods etc.
- not able to be crossed or traveled through
- Impossible to pass, cross or overcome
- Road Closed - use alternate route.