With the first-quarter earnings season going into full gear, the releases reveal a picture not too different from that of the last few quarters with earnings growth as well as top line expansion for the S&P companies hovering in the negative territory. In fact, 9 of the 16 Zacks sectors are expected to witness negative earnings growth in Q1.With macroeconomic concerns still looming large such sluggish/non-existent growth does not surprise us. The most talked about issue is probably the continuous fall in oil prices. While soft oil prices is a drag on earnings for most sector participants, cheap oil is a blessing for transportation stocks. This is because expenses associated with fuel are one of the major costs for any transport company.Cheap oil has helped key players in the transportation space like Delta Air Lines DAL register healthy earnings growth. No wonder the sector is displaying positive earnings growth so far in Q1. With a plethora of earnings reports scheduled to be out this week, we will have a clearer idea of the Q1 earnings performance by the end of the current week.Key transport companies reporting this week include C.H. Robinson Worldwide, Inc. CHRW, Ryder System R, United Parcel Service UPS and JetBlue Airways Corporation JBLU. Let’s take a look at the earnings forecast for these major players.C.H. Robinson Worldwide is scheduled to release its first-quarter 2016 financial results after the market close on Apr 26. The company has an Earnings ESP of 1.24% and a Zacks Rank #3 (Hold). Our model had not predicted an earnings beat initially but the current combination of positive ESP and Zacks Rank #3 hint at a beat in the to-be-reported quarter.Last quarter, the company reported earnings of 88 cents per share, a penny ahead of the Zacks Consensus Estimate. Moreover, the company beat the Zacks Consensus Estimate in three of the last four quarters (read more: C.H. Robinson Q1 Earnings: Stock to Disappoint?).Ryder System is scheduled to report first-quarter 2016 results on Apr 26, before market opens. The company has an Earnings ESP of 0.00% and a Zacks Rank #3. Though a Zacks Rank #3 increases the predictive power of ESP, this alone is not sufficient to secure an earnings beat.Last quarter, the company posted a negative earnings surprise of 5.14%, hurt by soft sales. In fact, this was the sole earnings miss for the company in the last four quarters, the average beat being 1.20% (read more: Ryder System Q1 Earnings: What's in the Cards?).United Parcel Service is slated to report first-quarter 2016 financial results on Apr 28, before the opening bell. The company has an Earnings ESP of 0.00% and Zacks Rank #3. Though a Zacks Rank #3 increases the predictive power of ESP, this alone is not sufficient to secure an earnings beat.Last quarter, UPS reported a positive earnings surprise of 11.35%. The company has an impressive track record with respect to earnings, having delivered higher-than-expected earnings in each of the past four quarters (read more: United Parcel Service Q1 Earnings: Surprise in Store?).JetBlue Airways Corporation is scheduled to report first-quarter 2016 results on Apr 26, before market opens. The low-cost carrier has an Earnings ESP of 0.00% and Zacks Rank #3. Though a Zacks Rank #3 increases the predictive power of ESP, this in itself is not sufficient to secure an earnings beat for the company.In the fourth quarter of 2015, the carrier had posted a positive earnings surprise of 9.8% buoyed by cheap oil. The company also outpaced the Zacks Consensus Estimate in three of the last four quarters (read more JetBlue Airways Q1 Earnings: A Surprise in Store?).Don’t miss out on our full earnings release articles for these four transportation stocks, as the actual results might hold some surprises!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 JETBLUE AIRWAYS (JBLU): Free Stock Analysis Report DELTA AIR LINES (DAL): Free Stock Analysis Report RYDER SYS (R): Free Stock Analysis Report CH ROBINSON WWD (CHRW): Free Stock Analysis Report UTD PARCEL SRVC (UPS): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research