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The California Air Resources Board has made available for public comment the latest draft version of two regulations that are aimed at cleaning up emissions from the estimated 1 million heavy-duty diesel trucks that operate in California.

California environmental regulators said they are beginning to enforce the state’s five-minute idling limit for diesel-fueled commercial vehicles, including those with sleeper cabs.

People often ask me how it is that, as a farmer, I stumbled into trucking. I grew up involved in the day-to-day operations of my family’s Indiana farm, but in 1972, I decided it was time to devote my energies to agribusiness.

Qualcomm Inc. added an in-cab scanning service to its mobile computing system, and launched a new reporting module designed to help carriers monitor how much fuel their drivers are burning, the company said last week.

The California ports of Los Angeles and Long Beach formally launched their clean-trucks programs last week without any apparent major glitches, although activity at some terminals was initially reported to be lighter than usual, with fewer trucks showing up at the gates.

Trucking industry leaders gathering in New Orleans this week at American Trucking Associations’ annual Management Conference & Exhibition will hear from experts on topics including the current financial turmoil, the upcoming elections, and preparations for next year’s highway bill and the 2010 engine emissions rules.

ORLANDO, Fla. — A fuel-optimization module acquired 12 months ago has since become a leading growth product for software vendor TMW Systems, which held its annual user conference in the heart of this resort-rich peninsula last week.

Diesel fuel’s national average price fell 6.5 cents to $3.958 a gallon, the 10th straight weekly decline and the first time it has fallen below the $4 mark in almost six months, the Department of Energy said Sept. 22, although a surge in crude oil prices added uncertainty to the outlook.

A federal appeals court Wednesday denied a motion to block a clean trucks program at the Southern California ports of Long Beach and Los Angeles, allowing the sister ports to begin implementation of the program Oct. 1, the Contra Costa (Calif.) Times newspaper reported.