Don't know where you are, but wouldn't your research suggest that light rail may be something to consider? I know TX was talking about it and I don't know why they switched to the TTC talks.
Most forms of mass public transportation resulted in a reduction of commute times for individuals taking the alternatives but had effectively zero impact on highway traffic. Implementing mass transit to reduce highway congestion doesn't.
"I know TX was talking about it and I don't know why they switched to the TTC talks"
Developers. Rapid rail (not necessarily "light") systems are the best solution for our urban-suburban traffic congestion problems, BUT they alter the economic value of the land. Property near the rail stations is valuable but areas distant from them drop in value (relatively).