Buses do not have physical governors anymore. They are electronically limited to certain parameters. The speed definitely has a cap it. With MTA MCI's, they are set at 65mph. I would assume that with NJT, it's the same. You just won't see those kinds of speeds around here (tri-state area). With the commuter buses that travel long distances outside of the tri-state, you might see them getting close the overall cap, which is about 93mph.