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RALEIGH, N.C. — Representatives of three major truck and engine makers candidly admitted to fleet maintenance directors meeting here that some performance results of diesel particulate filters have not worked out as well as originally anticipated.

Port of Los Angeles staff members are recommending that harbor commissioners push back until the end of 2011 the first phase of the port’s clean trucks program requiring that employee-only drivers move drayage trucks.

Oregon’s truck weight-mile tax is set to increase Oct. 1 by an average of 24.5%, along with the flat fees some truckers pay.

President Obama has asked that a pilot program allowing trucks up to 100,000 pounds to run on interstate highways in Maine and Vermont become a permanent exemption to the federal 80,000-pound limit.

As demand for people with transportation and logistics skills grows, many colleges and universities are finding it difficult to expand programs to meet the needs of shippers and freight carriers who are seeking trained workers and management personnel.

The U.S. diesel average price rose 1.7 cents to $2.96 a gallon last week, the second straight week it has inched upward, the Department of Energy reported.

HANOVER, Germany — The magic word at last week’s opening of the world’s biggest truck show seemed to be “survival,” as various manufacturers congratulated themselves and their remaining competitors for having survived the worst economic times since the end of World War II.

Driver turnover rose measurably for the first time in nearly four years during the second quarter, American Trucking Associations reported, as increasing freight volumes gave drivers more options.

New home sales were unchanged in August, following a record drop in July, the Commerce Department said Friday.

Durable goods orders fell 1.3% in August, the Commerce Department said Friday. Orders excluding transportation equipment rose 2%, more than forecast.