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Crude oil futures rose to more than $64 a barrel in early trading Wednesday on the New York Mercantile Exchange, the seventh straight trading day of increases, Bloomberg reported.

PALM SPRINGS, Calif. — The head of truck and engine maker Navistar International Corp. said its 2007 models are more fuel efficient and perform better than 2006 models, in addition to being cleaner burning.

Truck maker Volvo AB said its sales for the first two months of the year fell 13%, as U.S. deliveries plunged following new emissions standards that boosted truck prices, Bloomberg reported Tuesday.

WASHINGTON — Legislation proposed last week could allow federal weight limits for trucks to rise to 97,000 pounds and for the first time set fuel-efficiency standards for trucks.

WASHINGTON — Legislation proposed last week could allow federal weight limits for trucks to rise to 97,000 pounds and for the first time set fuel-efficiency standards for trucks.

Cascade Sierra Solutions, a nonprofit group that promotes the sale of products to help truck drivers save fuel and reduce emissions, said it has opened the first of what could be as many as eight “green truck technology” showrooms along the Interstate 5 corridor in Oregon, Washington and California.

The Environmental Protection Agency has proposed for the first time sharp cuts in exhaust emissions from railroad locomotive and marine engines in a plan a spokesman said would “follow exactly the same pattern” as environmental regulations for truck engines.

As the trucking industry shifts to the next generation of low-emission diesel engines, some fleet maintenance managers said they have experienced few problems with the transition, which presents maintenance adjustments for heavy-duty and medium-duty trucks alike.

The Ontario Trucking Association said Tuesday that an apparent diesel fuel shortage in the province was causing concern to truckers.