I am going to tell you how you can save taxes on the dollars you already spend on commute expenses. To be specific in any mass transit or parking. So, if you are hoping that I can give you any tip to save money on gas, try gas buddy or buy gas from a wholesale club, other than that I have no other tip. But, if you take the train like I do, or park your car before taking the train, I can tell you one trick to save income taxes on those expenses.
I live in the Boston suburb, so I take the T to work. The monthly Link pass costs $90.My employer offer commuter benefits. If I contribute $100 to that, that comes out from pretax dollars. That means, if I do not contribute to commuter benefit, I will have to pay tax on those dollars. So, since I contribute $90 towards the commuter benefit, I save tax on that.
I think you should talk to your HR, or talk to the employer and check if you can get the commuter benefit so that you can save money on taxes too.