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Title
Freight truck industry, semi-trailer. 18 wheeler #160071593
Description
Semi trucks frequently travel without a trailer. ââ¬ÅTractor trailerââ¬ÂÃÂÃâÃÂÃâÃâàand ââ¬Å18 wheelerââ¬ÂÃÂÃâÃÂÃâÃâàboth refer to the combination of a semi truck and its trailer.