1. tractor; towing vehicle
2. driving force; leading role
Wikipedia definition
3. Tractive forceAs used in mechanical engineering, the term tractive force is the pulling or pushing force exerted by a vehicle on another vehicle or object. The term tractive effort is synonymous with tractive force, and is often used in railway engineering to describe the pulling or pushing capability of a locomotive. The published tractive force value for any vehicle may be theoretical—that is, calculated from known or implied mechanical properties—or obtained via testing under controlled conditions.
Read “Tractive force” on English Wikipedia
Read “牽引車” on Japanese Wikipedia
Read “Tractive force” on DBpedia
Other forms
けん引車 【けんいんしゃ】


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