Timely transportation issues will be examined during two one-day workshops on Thursday and Friday, May 29 and 30, sponsored on campus by the UC Davis Institute of Transportation Studies. The workshops will focus on the social costs of motor vehicle use, and the potential for the pending federal NEXTEA legislation -- the re-authorization of the 1991 ISTEA (Intermodal Surface Transportation Efficiency Act) -- to impact funding for the environment, and to provide access to inner-city transportation and more livable communities. The May 29 workshop, at Putah Creek Lodge, will include UC Davis ITS researcher Mark Delucchi's first formal presentation of his five-year study on the costs of motor vehicle use in the United States. He will discuss not only social costs the driver directly incurs, such as gasoline and car repairs, but also indirect monetary costs, like the price of "free" parking at a shopping mall, and costs such as environmental harm. Other topics in this workshop will include the cost of importing oil, and the cost of motor vehicle emissions. The second workshop, May 30 at the Buehler Alumni and Visitor Center, will feature Hank Dittmar, one of the major architects of ISTEA, giving an overview of the proposals for NEXTEA. Other speakers from the Environmental Defense Fund, Caltrans and three think tanks will discuss financing and how NEXTEA could influence livable communities by addressing social and environmental issues. The conference web site is: http://www.engr.ucdavis.edu/~its/events/