CAMARILLO, Calif. (AP) – Gas prices remained steady during the nation’s heaviest driving season, rising less than a penny per gallon over the last two weeks, an industry analyst said Sunday.

The average price of self-serve gas, including all grades and taxes, was $1.55, according to the Lundberg Survey of 8,000 stations.

That was an increase of 0.12 cents per gallon from a July 11 survey.

The rise was due to increased costs of crude oil, refinery glitches and Hurricane Claudette, which struck the Texas Gulf coast July 15, said analyst Trilby Lundberg.

The Organization of Petroleum Exporting Countries is not expected to change prices of crude oil exports when it convenes Thursday in Vienna, Lundberg said.

Gas prices remain about 10 cents higher than a year ago.

The average price of gas, including taxes, at self-serve pumps Friday was about $1.52 for regular, $1.62 for mid-grade and $1.71 for premium.