The average cost of a gallon of gas in Massachusetts has fallen below the $3 threshold for the first time in almost four years.
The MBTA could save as much as $450,000 in the final three months of the year.
AAA Southern New England reports Monday that self-serve, regular has dropped to an average of $3.09 per gallon.
Massachusetts gas prices continued their downward spiral, dropping another 9 cents per gallon in the past week to an average of $3.17.
The average price of a gallon of gasoline has dropped another 6 cents in Massachusetts to $3.26.
Two gas stations have been lowering their prices for weeks to try and beat the other.
AAA Southern New England reports Monday that the average cost of a gallon of self-serve, regular in the Bay State is now $3.45.
The price of a gallon of gas in MA has dropped 3 cents in the past week.
NightSide With Dan Rea is free, every weeknight at 8 on WBZ NewsRadio 1030.
AAA predicts two records this week: the most July 4 holiday road trips in seven years and the highest July Fourth Holiday gas prices in six years.