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UNIVERSAL CITY, Calif. — An official with the Chicago Climate Exchange said the demand for cleaner engines and alternative fuels in the United States will increase as membership in its cap-and-trade emission trading system expands.

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Ryder System said Monday its board approved a 3-cent increase in its dividend, boosting the payout to 21 cents a share.

Less-than-truckload carrier Saia Inc. said Thursday it has acquired Wisconsin-based LTL company Madison Freight Systems for about $2.5 million.

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The U.S. Customs and Border Protection agency said Friday that truck carriers entering the United States at all land border ports of entry in California, Texas and New Mexico will be required to present advance electronic cargo information through the Automated Commercial Environment truck manifest system.

U.S. Customs and Border Protection is developing a commercial trade processing system — the Automated Commercial Environment — designed to facilitate legitimate cross-border trade while strengthening border security.

In their first days as Congress’ new majority, Democrats on Capitol Hill introduced legislation calling for greater cargo screening and tracking of hazardous materials shipments.

Ryder System said late Thursday that it will freeze its pension system and shift to a 401(k) savings plan, in a move that will affect about a third of its employees.

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