The price of a gallon of gasoline in Rhode has remained the same this week. AAA Northeast found in its weekly survey released Tuesday that the price of self-serve, regular is averaging $2.88 per gallon, which is unchanged from last week. That’s three cents higher than the national average and 52 cents per gallon higher than it was a year ago. AAA found self-serve, regular gasoline selling for as low as $2.75 per gallon and as high as $3.09 in Rhode Island. AAA says prices have been relatively flat for the last few weeks nationally. AAA says it’s watching to see if prices spike closer to Labor Day, as people take road trips before the summer ends.