Refrigerated Roadways Freight Semi. Uniquely Australian. At one time Roadways were the biggest privately owned refrigerated transport company in the land. Diecast metal model with some plastic parts. Kenworth Prime Mover and Refrigerated Freight Trailer. Primer mover approx. 11cm long, and trailer approx. 20.5 cm long. When coupled the length of the full unit is approx. 26cm (10.25") long.