CAMARILLO, Calif. -- Gas prices fell about 2 cents for all grades during the past two weeks, the first drop in a month, according to the Lundberg Survey.

According to an Associated Press report, citing Lundberg figures, the average price of gasoline Friday, including all grades and taxes, was $1.54 a gallon, down 2.29 cents since Sept. 7.

Analyst Trilby Lundberg said oil industry restraint and weak demand in the wake of the Sept. 11 terrorist attacks accounted for the lower prices.

``People are not just canceling air travel, but travel period,'' Lundberg said, suggesting that prices may continue to fall in the aftermath of the attacks, unless war activity in the Middle East appears to threaten crude supplies. “Prospects for the continued falling pump prices would crumble immediately if crude oil supply, especially from the Middle East, were to appear threatened.”

After reaching record unadjusted highs in May, gas prices fell nearly 32 cents over the summer before rising again in late August and early September. The summer-long decrease was the result of refiners overproducing to avoid shortages during the summer driving season, Lundberg told AP.

The national weighted average price of gasoline, including taxes, at self-serve pumps Friday was about $1.51 a gallon for regular unleaded, $1.61 for mid-grade and $1.70 for premium.