Tollbooth politics

Tollbooth politics - The Boston Globe

State's needs, and the road to gas tax

I still don't understand why some roads are free and others are not? Why should we put more tolls on the Turnpike and raise the gas tax? Why does it cost $2 to drive from Allston to Waltham? And why is one state commission trying to add more tolls while the Turnpike is trying to (or at least talking about) eliminating them?