Gasoline prices are unchanged for the first time since mid-January.

Costs in Massachusetts remain at an average of $3.14 per gallon of regular, self-serve gasoline, the latest statewide survey by AAA of Southern New England Monday found.

Last week, prices rose 2 cents from the previous week, and were down a penny two weeks ago following five weeks of cost hikes.

Costs are 20 cents higher than eight weeks ago, and are within 7 cents of the all-time high. In Rhode Island, prices for a gallon of regular unleaded rose a penny from last week, to $3.20, AAA said.

Impacting mostly truckers and just about all consumer goods, diesel prices, at $4.13 a gallon, are one cent more than last week. Things could be worse in this region as the average gasoline price in Massachusetts is 19 cents below the nation's $3.33 average - a record, and about 60 cents higher than a year ago due to mounting oil prices.

Gasoline costs hit a high in Massachusetts in 2007 of $3.04 on Memorial Day; the low for last year was $2.15 in early February. A year ago, the average price was $2.68.