Before you use a website -- or any source -- for an assignment, consider:
There are many variations on this technique -- here are links to a few of them.
This video describes the features of Google Advanced Search, which can help you focus your search results on exactly what you need.
When is the last time you thought about how you enter searches in a tool like Google?
Take a quick look through Google's How to Search on Google article, then go a step further and check out Refine Web Searches.
Making use of advanced search screens can help you hone your search skills!
Google Advanced Yahoo Advanced
Also -- try limiting your search by domain (.edu, .gov, .org, etc.) by typing site:.edu in the box along with your search terms.
Consider joining a professional organization now! Many have discounted memberships for students!
National Highway Traffic Safety Administration - U.S. Dept. of Transportation
AAA Foundation for Traffic Safety- research and facts on traffic safety.
The Center for Auto Safety- from Consumer's Union
Crashtest.com - includes information from government websites and more.