Three environmental and social justice groups said Friday they have settled their lawsuit against a Bay Area regional growth and transportation plan aimed at clustering development near transit centers.

The Sierra Club, Communities for a Better Environment, and Earthjustice argued in their lawsuit that Plan Bay Area is too weak in reducing air pollution, including greenhouse emissions.

In agreeing to settle their state lawsuit, the groups said they secured a commitment from regional planning agencies to do more in the next plan in 2017 to explain pollution reductions from the regional plan.

"The settlement provides residents and policy makers with important information about whether the next plan will reduce greenhouse gas emissions from passenger vehicles," said Matt Williams, transportation committee chair for the Sierra Club San Francisco Bay chapter.

The settlement, he said, also calls for regional agencies to track and disclose progress in getting housing built in city and county priority development areas.

Plan Bay Area was adopted last year by the Metropolitan Transportation Commission and the Association of Bay Area Governments. The commission had no immediate comment Friday.

In March, the Building Industry Association of the Bay Area dropped its lawsuit against the plan in exchange for a commitment that the agencies do more to plan for housing growth in the 2017 plan.

Contact Denis Cuff at 925-943-8267. Follow him at Twitter.com/deniscuff