JCB's dedicated-track Dumpsters transport materials on sites with tight, confining areas and poor ground conditions. The TD7 features a 9-hp gas engine and a manual-start function. The TD10 has a 13-hp gas engine and can be equipped with electric start. The TD10SL can also be equipped with electric start. It has an optional self-loading feature that allows the machine to fill its own dump body. Carrying capacity is 1,566 pounds for each Dumpster, and cubic-yard capacity is 0.40. Tracks retract to 29.5 inches and widen to 41.3 inches. Estimated list prices: $11,747 to $15,386.