A brief look at railroad freight traffic numbers offers some tell-tale signs as to where our economy is heading. I like to review railroad loading statistics because they can give you a crystal-ball edge in guessing where the big money is leaning in the volatile economic food chain. Basically, right now the numbers are firm year over year, but the freight demographics are what I find interesting.

According to the Association of American Railroads: Total rail freight volume is up 8.9% as compared to 2006, but while container volume is up about 14%, trailer volume is down 6.2%. That indicates that for the year so far, the railroads are probably moving more imported product than domestic product.

While total carload freight (not including inter-modal) was down nearly 1% this week as compared to the same week last year, total ton-miles increased 0.3%, indicating that less freight is moving but it is traveling more miles. That is clearly due to the decreasing inventories of manufactured product, which should bode well for manufacturers in the second and third quarters. That's assuming that consumer spending maintains current levels.

Nonmetallic mineral shipments have increased nearly 20% by volume over last year. This shows strength in base chemicals, base raw materials, glass, concrete, asphalt, industrial construction, and infrastructural improvements. Metallic ore shipments are down over 50%; I believe that shows weakness most especially in steel, tin, aluminum, and copper. Lumber and wood product shipments declined nearly 25% -- no reprieve for the home building market there! Petroleum product shipments are up 9.2% year over year, and coal shipments have increased 3.1%. Here's a tip, it looks like road building and resurfacing will be a big gainer this summer!