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Rickard Lundberg started his career in the Volvo Group in 1989 when he was only about 19 years old. Then, in the first of what would be many jobs with Volvo, he worked on the shop floor, turning crankshafts at the truck maker's engine factory in Skovde, Sweden.

Less than three months ago, Mack Trucks reported its weakest year of truck deliveries in six years. Now, it appears, the heavy-duty truck manufacturer with a massive assembly plant in Lower Macungie Township, Pa., is turning the corner.

Mack Trucks delivered a mixed load of numbers in its first quarter, dragged down by lower output totals but propelled forward by a surge in orders logged during the first three months of 2017.

LOUISVILLE, Ky. — Emphasizing the growing role of truck connectivity, Mack Trucks said it was extending its telematics hardware as an option for its model year 2011 and newer trucks equipped with Mack engines, effective May 1.

Mack Trucks' Granite model is the best-selling heavy-duty conventional straight truck in the United States, based on registrations of new commercial vehicles in 2016, according to the manufacturer.

Mack Trucks announced extended engine oil drain intervals for customers using its newly formulated genuine Mack engine oil EOS-4.5.

Choices for the largest diesel truck engines are thinning as Volvo Trucks North America and Mack Trucks are getting out of the 16-liter business.

In the cyclical heavy-duty truck market, what goes up must eventually come down, and that's exactly what happened to Mack Trucks in 2016.

Mack Trucks said it was developing an additional prototype of heavy-duty zero-emissions trucks for evaluation in Southern California, which has some of the worst air quality in the nation.