Imagine that you're an elected official serving on a committee that sets the standards cars must meet to pass a state inspection. You know that this is a complex issue, and you'd like to learn more about existing policies, the effects of emissions on the environment and on public health, the economic consequences of different possible approaches, and more-you want to make an informed decision. But you don't have time to research all of these issues! You need a policy brief. A policy brief presents a concise summary of information that can help readers understand, and likely make decisions about, government policies. Policy briefs may give objective summaries of relevant research, suggest possible policy options, or go even further and argue for particular courses of action