U.S. retail sales of medium-duty trucks overall nudged higher in September, led by Class 6, the only sector to improve, WardsAuto.com reported.

Driver turnover is on pace to hit the highest annual rate in five years, but experts point to several ways carriers can limit the churn, including better hiring interviews, bonuses, expanded benefits, use of mobile freight apps and empathy when drivers are confronting hardship.

Cummins Inc. and Isuzu Motors announced they have signed a letter of intent to jointly evaluate opportunities to deliver globally competitive powertrain products.

The U.S. average retail price of diesel jumped 7.2 cents to $3.385 a gallon as oil prices remained at levels not seen in four years over supply concerns. The increase was the seventh consecutive weekly rise for diesel, and the fuel has risen 17.8 cents a gallon since Aug. 20.

The head of Daimler Trucks has questioned, but not completely written off, the business case for heavy-duty truck platooning in light of other emerging technologies and fuel gains from new combination vehicles operating independently.

The annualized rate of driver turnover at large truckload fleets in the second quarter jumped 4 percentage points year-over-year to 98%, according to American Trucking Associations’ Trucking Activity Report.

The aggressive demand for new Class 8 trucks rolled on in September, contributing to record order strength over the past three months, ACT Research Co. reported.

The U.S. average retail price of diesel spiked 4.2 cents to $3.313 a gallon as oil prices climbed to levels not seen in four years. Besides oil prices being at a four-year high, diesel is at its highest price since Dec. 15, 2014, when it was $3.419.

Volvo Trucks announced it would commercialize all-electric trucks in North America in 2020 after introducing them in California next year, a move made in conjunction with a partnership that includes Volvo Group, California’s South Coast Air Quality Management District and industry leaders in transportation and electrical charging infrastructure.

Strong demand for used trucks continued in August as the average price of a Class 8 vehicle jumped 16% year-over-year in the midst of a historically strong freight market, ACT Research reported.