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Canadian National Railway Co. said its second-quarter net income rose to C$538 million, or C$1.18 cents per share, from C$534 million, or C$1.13 per share, a year earlier.

Covenant Transportation Group turned around a first-quarter loss and posted a second quarter profit, though smaller than a year ago, the truckload carrier said.

Transportation and third-party logistics firm C.H. Robinson Worldwide reported a second-quarter profit of $111 million, or 67 cents a share, up 14.2% from $97.2 million, or 59 cents, a year earlier.

Trucking industry, government and safety representatives told a Senate panel that federal regulators could improve motor carrier safety by raising the bar for new carriers entering the industry, among other policy changes.

The American Transportation Research Institute has updated its online guide of state and local truck anti-idling regulations.

Truck and engine manufacturer Paccar Inc. said Tuesday its second-quarter profit rose on higher truck sales, though it trimmed its overall sales outlook for the 2011 North American trucking market.

Engine maker Cummins Inc. said Tuesday its second-quarter profit doubled to a record on higher sales, and it boosted its earnings outlook for the full year.

New home sales fell for the second straight month in June, declining 1% to 312,000, the Commerce Department said Tuesday.