masstransitmag : "December Transit Savings Report. Individuals who ride public transportation instead of driving can save, on average, more than $809 per month.
These savings are based on the cost of commuting by public transportation compared to the cost of owning and driving a vehicle. These costs include the Dec. 21, 2016, national average gas price ($2.25 per gallon, as reported by AAA) and the national unreserved monthly parking rate.
APTA releases this monthly Transit Savings Report to examine how an individual in a two-person household can save money by taking public transportation and living with one less car.