a vehicle's ability to travel on certain types of terrain or ground
trafficability in American English
(ˌtræfɪkəˈbɪlɪti)
noun
1.
the condition of soil or terrain with regard to its being traveled over, as by people, vehicles, or machinery
2.
the skill of maneuvering over a terrain
Word origin
[1895–1900; trafficable + -ity]This word is first recorded in the period 1895–1900. Other words that entered Englishat around the same time include: Marxism, backstage, flamenco, freewheel, neon-ity is a suffix used to form abstract nouns expressing state or condition. Other wordsthat use the affix -ity include: Latinity, civility, jollity