What type of train runs back and forth between a single loading point and a single destination to deliver one commodity?

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Quizplus · Accepted Answer

A unit train is a train that carries only one type of commodity and runs back and forth between a single loading point and a single destination. It is more efficient for transporting bulk goods, such as coal, grain, or oil, as it saves time and cost by eliminating switching between different types of cargo.

What Type of Train Runs Back and Forth Between a Single