Although we don't believe in timing the market or panicking over market movements, we do like to keep an eye on big changes -- just in case they're material to our investing thesis.

What: Shares of TravelCenters of America (NYSE:TA) were getting stranded today, falling as much as 13% after posting quarterly earnings.

So what: The highway rest-stop operator beat EPS estimates slightly with a $0.41 loss on expectations of -$0.43, but revenues were down 1.9% to $1.96 billion, well below the analyst consensus of $2.11 billion. Despite the drop in sales, management noted an improvement in fuel gross margin, nonfuel revenues, nonfuel gross margin, and EBITDAR (The R is for rent). However, gallons of fuel sold declined by 3.3%. CEO Thomas O'Brien noted that the company overcame severe weather challenges and that the calendar had one less day due to Leap Day.

Now what: The winter months are historically slow for TravelCenters, and the company deserves credit for improving earnings on declining revenue, but macroeconomics seem to be against rest-stop fuel vendors, as more efficient will mean fewer stops to fill up or lower fuel sales and less of a need for companies like TravelCenters. Shares are cheap, but this could be a value trap.

Get more on TravelCenters of America. Add the company to your Watchlist here.

Fool contributor Jeremy Bowman has no position in any stocks mentioned, and neither does The Motley Fool. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.