NTSB's Most Wanted List for 2015 addresses need for rail tank cars that carry crude oil, ethanol, and other hazardous material across the country to do it more safely. Also new to list of top 10 areas that need safety improvements are: requiring that transportation operators be medically fit for duty; strengthening commercial trucking safety; and requiring pilots to strengthen procedural compliance. Distraction and impairment are still key issues, and both are on the list again this year.