The grades of 4 Road & Rail stocks are on the rise this week on Portfolio Grader. Each of these stocks is rated an “A” (“strong buy”) or “B” overall (“buy”).

Old Dominion Freight Line, Inc.’s (ODFL) ratings are looking better this week, moving up to a B from last week’s C. Old Dominion Freight Line, Inc. is an inter-regional and multi-regional motor carrier. The company also gets A’s in return on equity. For more information, get Portfolio Grader’s complete analysis of ODFL stock.

Landstar System, Inc. (LSTR) boosts its rating from a C to a B this week. Landstar System, Inc. is a provider of freight transportation services and supply chain solutions. The company also gets A’s in return on equity. For more information, get Portfolio Grader’s complete analysis of LSTR stock.

Saia, Inc. (SAIA) earns a B this week, jumping up from last week’s grade of D. Saia, Inc. is an asset-based trucking company that provides a variety of transportation and supply chain solutions to a broad range of industries, including the retail, chemical and manufacturing industries. For more information, get Portfolio Grader’s complete analysis of SAIA stock.

Marten Transport, Ltd. (MRTN) is seeing ratings go up from a C last week to a B this week. Marten Transport, Ltd. is a truckload freight carrier that specializes in hauling temperature-sensitive goods. For more information, get Portfolio Grader’s complete analysis of MRTN 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.