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For carriers, the effort to find the best nonidling cooling option for the truck cab has not been without starts and stops.

The Federal Motor Carrier Safety Administration will research how it could assign blame for truck crashes based on a carrier’s fault, and publish the results of its study in summer 2013, the agency said Monday.

Electronic sensors and enforcement are being credited as reducing the number of truck related crashes in Washington State, the Associated Press reported.

The coolers at the heart of exhaust gas recirculation systems that have been present on diesel truck engines since 2002 have been failing at a worrisome rate, according to several fleet managers.

The Transportation Intermediaries Association has renewed its bid to force the Pipeline and Hazardous Materials Safety Administration to display more information in its database for consistency with another federal agency.

Satisfaction with model-year 2011 trucks suffered as a result of technology added to comply with 2010 federal emissions regulations, which resulted in customers’ reporting more problems with the trucks, a recent J.D. Power and Associates’ survey found.

Some trucking companies may stop offering health insurance plans as President Obama’s health-care overhaul takes effect, some experts said, citing the increasing costs of insurance compared with the penalty for not offering plans.

The Federal Motor Carrier Safety Administration said it ordered Lebanon, Tenn.-based trucking company Three Angels Farms shut down for safety violations.

A year after U.S. officials agreed to allow Mexican trucks into the country, only four Mexican carriers are participating, far below the number the United States has said would be needed to judge the safety of Mexican trucks.