Two influential members of Congress are asking the U.S. Department of Transportation's Inspector General to make a thorough study of the planned cross-border pilot program involving Mexican trucks.

Reps. James Oberstar, D-MN, and Peter DeFazio, D-OR, want the DOT to zero in on four areas:

• Hours-of-service compliance by Mexican drivers;
• Drug and alcohol testing standards in Mexico;
• How Mexican truckers will get U.S. insurance coverage; and
• Problems with incomplete or inaccurate data on Mexican trucks and drivers.

Oberstar chairs the House Transportation Committee, and DeFazio chairs the Transportation Subcommittee.