$531 billion...

That's the latest SCAG estimate for fixing Southern California's woeful traffic problems, including more freeways, wider freeways and more mass transit. The Press-Telegram reports:

Maintaining and boosting Southern California's transportation system over the next three decades could cost some $531 billion and require new taxes, tolls and user fees, a regional planning group said Friday. In its latest 30-year plan, the Southern California Association of Governments spelled out a range of projects that the region desperately needs to keep people and goods moving - from high-tech maglev rail lines to low-tech pothole repairs. And the region has to plan for at least another 6 million people in the next 30 years, said Gary Ovitt, immediate past president of SCAG and a San Bernardino County supervisor.