This week, three Road and Rail stocks are improving their overall ratings on Portfolio Grader. Each of these stocks is rated an “A” (“strong buy”) or “B” overall (“buy”).

RailAmerica (NYSE:RA) is progressing from last week’s rating of B (“buy”) as the company improves to an A (“strong buy”) this week. RailAmerica owns and operates short-line and regional freight railroads in North America. For more information, get Portfolio Grader’s complete analysis of RA stock.

Amerco (NASDAQ:UHAL) ups its rating to a B (“buy”) this week after earning a C (“hold”) in the week before. Amerco supplies products and services to help people move and store their household and commercial goods in the United States and Canada. Shares of UHAL have increased 7% over the past month, better than the 4.1% decrease the Nasdaq has seen over the same period of time. For more information, get Portfolio Grader’s complete analysis of UHAL stock.

Dollar (NYSE:DTG) boosts its rating from a C to a B this week. Dollar Thrifty Automotive engages in the daily rental of vehicles to business and leisure customers under the Dollar and Thrifty names through company-owned stores in the United States and Canada. For more information, get Portfolio Grader’s complete analysis of DTG stock.

Louis Navellier’s proprietary Portfolio Grader stock ranking system assesses roughly 5,000 companies every week based on a number of fundamental and quantitative measures. Stocks are given a letter grade based on their results — with A being “strong buy,” and F being “strong sell.” Explore the tool here.