Ratcheting Down Density
"No affordable mass transit or commuter rail system can possibly be built linking anything more than a handful of people to where they live and work. One could argue that, once built, high-rise dwellings and high-employment centers would spring up. That has not been Atlanta's experience with rapid rail in the decades since the east-west line opened. And with the possible exception of the Lindbergh station, MARTA hasn't driven density around stations on the north-south line, either."
"The practical remedy is to ratchet down density in all but the places where roads exist to carry it. Just as water withdrawal permits exist, so too should jurisdictions be assigned traffic-addition permits for every major highway based on the road's carrying capacity. If cities or counties want to add traffic, they should be required to jointly fund new capacity."