How will future vehicle Zero Emission Vehicles (ZEV) fleet scenarios affect emissions of criteria pollutants, mobile source air toxics, and greenhouse gases? TRB will conduct a webinar on Tuesday, June 30 from 1:00 PM to 3:00 PM that will discuss research on future vehicle fleet scenarios’ effect on emissions. Presenters will review literature and modeling analysis on U.S. ZEV adoption. The work provides insights encouraging the adoption of ZEVs such as electric or fuel cell vehicles with implications for state departments of transportation and metropolitan planning organizations seeking to make policy decisions to advance penetration of ZEVs into the light-duty vehicle fleet. Presenters will also discuss future research suggestions.