The grades of four road and rail stocks are better this week, according to the Portfolio Grader database. Every one of these stocks has an “A” (“strong buy”) or “B” overall (“buy”) rating.

RailAmerica (RA) is making headway this week, with the company’s rating improving to an A (“strong buy”) from a B (“buy”) last 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.

Vitran Corporation Inc. (VTNC) ups its rating to a B (“buy”) this week after earning a C (“hold”) in the week before. Vitran provides freight surface transportation and related supply chain services in Canada and the United States. For more information, get Portfolio Grader’s complete analysis of VTNC stock.

This is a strong week for Guangshen Railway Co. Ltd. Sponsored ADR Class H (GSH). The company’s rating climbs to B from the previous week’s C. Guangshen Railway is a provider of railroad passenger and freight transportation, as well as railway network usage and services. For more information, get Portfolio Grader’s complete analysis of GSH stock.

J.B. Hunt Transport Services, Inc. (JBHT) shows solid improvement this week. The company’s rating rises from a C to a B. J.B. Hunt Transport Services provides transportation and logistics services in the United States, Canada, and Mexico. For more information, get Portfolio Grader’s complete analysis of JBHT 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.