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Ryder System said Wednesday its first-quarter profit rose 8% to $51.3 million or 84 cents a share, from $47.6 million or 77 cents a year ago.

Transportation and logistics firm C.H. Robinson Worldwide said its first-quarter net income jumped 25.6% to $73 million or 42 cents a share, up from $58.1 million or 33 cents a year ago.

Trucking companies are concerned that new emissions rules in effect this year are hurting mileage and their bottom lines, the Wall Street Journal reported Tuesday.

Canadian transportation firm TransForce Income Fund said Tuesday it earned C$20.9 million or 24 cents a share in the first quarter, down from C$22.1 million or 27 cents a year earlier.

Forward Air Corp., a contractor to the air cargo industry, said its first-quarter profit slipped by 6% to $10.3 million or 34 cents a share, from $11 million or 35 cents a year ago.

The Jacksonville Port Authority said it recorded its busiest cargo-handling year in 2006 — its sixth consecutive year of cargo growth — with a 3% increase over 2005.