Investors might want to bet on TravelCenters of America (TA), as earnings estimates for this company have been showing solid improvement lately. The stock has already gained solid short-term price momentum, and this trend might continue with its still improving earnings outlook.The rising trend in estimate revisions, which is a result of growing analyst optimism on the earnings prospects of this truck-stop operator, should get reflected in its stock price. After all, empirical research shows a strong correlation between trends in earnings estimate revisions and near-term stock price movements. This insight is at the core of our stock rating tool -- the Zacks Rank.The five-grade Zacks Rank system, which ranges from a Zacks Rank #1 (Strong Buy) to a Zacks Rank #5 (Strong Sell), has an impressive externally-audited track record of outperformance, with Zacks #1 Ranked stocks generating an average annual return of +25% since 2008.Consensus earnings estimates for the next quarter and full year have moved considerably higher for TravelCenters, as there has been strong agreement among the covering analysts in raising estimates.The chart below shows the evolution of forward 12-month Zacks Consensus EPS estimate:12 Month EPSCurrent-Quarter Estimate RevisionsFor the current quarter, the company is expected to earn $2.01 per share, which is a change of +32.24% from the year-ago reported number.Over the last 30 days, the Zacks Consensus Estimate for TravelCenters has increased 18.93% because one estimate has moved higher compared to no negative revisions.Current-Year Estimate RevisionsThe company is expected to earn $8.08 per share for the full year, which represents a change of +96.59% from the prior-year number.In terms of estimate revisions, the trend for the current year also appears quite encouraging for TravelCenters. Over the past month, one estimate has moved higher compared to no negative revisions, helping the consensus estimate increase 6.88%.Favorable Zacks RankThanks to promising estimate revisions, TravelCenters currently carries a Zacks Rank #1 (Strong Buy). The Zacks Rank is a tried-and-tested rating tool that helps investors effectively harness the power of earnings estimate revisions and make the right investment decision. You can see the complete list of today's Zacks #1 Rank (Strong Buy) stocks here.Our research shows that stocks with Zacks Rank #1 (Strong Buy) and 2 (Buy) significantly outperform the S&P 500.Bottom LineTravelCenters shares have added 5.3% over the past four weeks, suggesting that investors are betting on its impressive estimate revisions. So, you may consider adding it to your portfolio right away to benefit from its earnings growth prospects. FREE Report: The Metaverse is Exploding! Don’t You Want to Cash In? Rising gas prices. The war in Ukraine. America's recession. Inflation. It's no wonder why the metaverse is so popular and growing every day. Becoming Spider Man and fighting Darth Vader is infinitely more appealing than spending over $5 per gallon at the pump. And that appeal is why the metaverse can provide such massive gains for investors. But do you know where to look? Do you know which metaverse stocks to buy and which to avoid? In a new FREE report from Zacks' leading stock specialist, we reveal how you could profit from the internet’s next evolution. Even though the popularity of the metaverse is spreading like wildfire, investors like you can still get in on the ground floor and cash in. Don't miss your chance to get your piece of this innovative $30 trillion opportunity - FREE.>>Yes, I want to know the top metaverse stocks for 2022>>Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report TravelCenters of America LLC (TA): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research