As a lower-cost alternative to traditional articulated and rigid-frame haul trucks used in mining and quarry applications, Western Star has “uprated” an on/off-highway truck to haul loads up to 40 tons. According to the company, the three-axle 6900 XD is designed to minimize cost per ton of material hauled and maximize shift productivity through lower fuel consumption, faster cycle times and superior operator comfort. Equipped with 110,000-pound-capacity planetary drive axles, the 6900 XD is powered by a Tier-3 Detroit Diesel Series 60 engine with a fully automatic Allison 4500 RDS transmission; is capable of speeds up to 43 mph; and has recorded fuel consumption of 7.13 gph on hauls of more than 12 miles.