Volvo Trucks North America will begin deliveries of these trucks to the Phoenix-based fleet in April.
Volvo Trucks had produced and invoiced 85 EPA2010-certified trucks for customers and dealers as of January 20.
Knight's Volvo VNL670s are equipped with Volvo D13 diesel engines, rated at 425 horsepower and 1,450/1,750 pounds-feet of torque with Volvo's Eco-Torque feature.
Knight is a long-standing Volvo customer; about 3,000 of the 3,736 trucks in its fleet are Volvo VNs. The new Volvos will be used across Knight's fleet in all of the company's operations.
"We want to have this new technology from Volvo," said Dave Williams, Knight Transportation's vice president of equipment and maintenance. "We will gain fuel economy. We've tested the technology and we're comfortable with it. These trucks are better for the environment and they're better for us."