Westinghouse Air Brake Technologies (WAB) or Wabtec shares ended the last trading session 5.6% higher at $91.85. The jump came on an impressive volume with a higher-than-average number of shares changing hands in the session. This compares to the stock's 4% gain over the past four weeks.The uptick was driven by the deal signed by Wabtec with major railroad operator, Union Pacific UNP. The locomotive modernization deal (estimated value of more than $1 billion) is the largest in the rail industry. Following the deal, Wabtec is responsible for modernizing 600 locomotives owned by Union Pacific. The procedure will result in the recycling of about 70,000 tons of steel and a reduction of 350 tons of carbon per year for every modernized locomotive following fuel efficiency upgrades.This maker of parts for locomotives, subways and buses is expected to post quarterly earnings of $1.22 per share in its upcoming report, which represents a year-over-year change of +15.1%. Revenues are expected to be $2.08 billion, up 3.5% from the year-ago quarter.Earnings and revenue growth expectations certainly give a good sense of the potential strength in a stock, but empirical research shows that trends in earnings estimate revisions are strongly correlated with near-term stock price movements.For Wabtec, the consensus EPS estimate for the quarter has remained unchanged over the last 30 days. And a stock's price usually doesn't keep moving higher in the absence of any trend in earnings estimate revisions. So, make sure to keep an eye on WAB going forward to see if this recent jump can turn into more strength down the road.The stock currently carries a Zacks Rank #3 (Hold). You can see the complete list of today's Zacks Rank #1 (Strong Buy) stocks here >>>>Wabtec is part of the Zacks Transportation - Equipment and Leasing industry. Air Lease (AL), another stock in the same industry, closed the last trading session 2.8% higher at $35.43. AL has returned 5.1% in the past month.For Air Lease, the consensus EPS estimate for the upcoming report has changed -4.9% over the past month to $0.96. This represents a change of +28% from what the company reported a year ago. Air Lease currently has a Zacks Rank of #3 (Hold). Zacks Names "Single Best Pick to Double" From thousands of stocks, 5 Zacks experts each have chosen their favorite to skyrocket +100% or more in months to come. From those 5, Director of Research Sheraz Mian hand-picks one to have the most explosive upside of all. It’s a little-known chemical company that’s up 65% over last year, yet still dirt cheap. With unrelenting demand, soaring 2022 earnings estimates, and $1.5 billion for repurchasing shares, retail investors could jump in at any time. This company could rival or surpass other recent Zacks’ Stocks Set to Double like Boston Beer Company which shot up +143.0% in little more than 9 months and NVIDIA which boomed +175.9% in one year.Free: See Our Top Stock and 4 Runners Up >>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 Westinghouse Air Brake Technologies Corporation (WAB): Free Stock Analysis Report Union Pacific Corporation (UNP): Free Stock Analysis Report Air Lease Corporation (AL): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research