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Hino Motors Ltd., Japan’s largest heavy-duty truck maker, had a wider-than-expected annual loss because of falling sales and one-time costs from a change in its pension system, Bloomberg reported Tuesday.

Vehicle parts manufacturer Eaton Corp. said Monday it lost $52 million on the first quarter as sales slumped.

A few more customers may be peeking into the showroom, but buying volume continues to limp along near 25-year lows, according to the latest report on Class 8 truck sales.

Federal researchers said they have confirmed manufacturers’ claims that single wide tires can boost a truck’s fuel economy, but one tire expert said they may not be suitable for every fleet.

Truck components maker ArvinMeritor said Monday it has saved about $430 million on an annual basis in cost-reduction measures taken since October.

Cadec Global, which offers fleet management services, said it has received an additional $4 million in funding from Thule Investments that will be applied to support further growth.

Sterling Truck Corp. officially ended its 11-year life span last month when the last Class 8 rolled off the St. Thomas, Ontario, assembly line, part of a final order for ABF Freight System Inc.

The Massachusetts House of Representatives has joined the Senate in approving a reform plan for the state’s transportation system.

Ryder System Wednesday cut its first-quarter forecast, saying the ongoing recession has hurt its freight volumes and reduced demand.