A pro-congestion pricing proponent was attacked at a Manhattan subway station over the weekend -- even as the group wants to push more locals into the transit system.

The toll, known as congestion pricing, is meant to reduce traffic gridlock in densely packed Manhattan while also raising money to help fix the city’s ailing public transit infrastructure. It formally took effect Sunday.

As part of a the MTA's congestion pricing plan, commuters will be charged a toll upon entering parts of Manhattan during specific times.