noun
unlicensed commercial truck; white-plate truck
Colloquial term for a commercial truck that operates with white license plates, often implying it is unlicensed or operating outside regulations. Derived from 白ナンバートラック.
See also: 白ナンバー
あの白トラは許可なく営業しているらしい。
That white-plate truck seems to be operating without a license.
白トラの取り締まりが強化された。
Crackdowns on unlicensed commercial trucks have been strengthened.