Why So Many Empty Intermodal Rail Cars

Mainline in Pennsylvania near Harrisburg. I find lots of empty intermodal railcar going in both North AND south. I wonder why?

I find An Old Working Conrail Locomotive Running The Mainline
   • I find An Old Working Conrail Locomotive R...  

FSC Trucking
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FSC Truck Shop
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FSC Speed Shop
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MARC Train In Maryland, CSX In New Jersey
   • MARC Train In Maryland, CSX In New Jersey  

I Stumble On Historic RR Washout Spot Filming Trains
   • I Stumble On Historic RR Washout Spot Film...  

Brand New Tank Cars In Missouri
   • Brand New Tank Cars In Missouri  

Jealous Steam Train Watches As Modern Locomotives Speed By
   • Jealous Steam Train Watches As Modern Loco...  

Robbed Container Solved In Abilene Texas
   • Robbed Container Solved In Abilene Texas  

Victim Of Train Robbers Found In Texas
   • Victim Of Train Robbers Found In Texas  

Union Pacific In Midland Texas
   • Union Pacific In Midland Texas  

New Jersey Railroad History In A Modern Helmetta
   • New Jersey Railroad History In A Modern He...  

Vultures On Tracks, Something Died
   • Vultures On Tracks, Something Died  

Semi Truck Confusion At RR Crossing. Two Texas Trains Pass At Siding.
   • Semi Truck Confusion At RR Crossing.  Two ...  

Wisconsin Trains In The Snow
   • Wisconsin Trains In The Snow  

Big Trains Near Green Bay
   • Big Trains Near Green Bay  

Oshkosh Night Trains. Last Train DPU
   • Oshkosh Night Trains.  Last Train DPU  

Two Switching Trains Of Green Bay Wisconsin
   • Two Switching Trains Of Green Bay Wisconsin  

I Fail In Filming An Illinois End Of Line Transfer
   • I Fail In Filming An Illinois End Of Line ...  

Union Pacific Trains In Texas
   • Union Pacific Trains In Texas  

BNSF Trains In Kansas And Oklahoma
   • BNSF Trains In Kansas And Oklahoma  

Union Pacific And CN Arrive in Green Bay
   • Union Pacific And CN Arrive in Green Bay  

Chicago Fort Wayne Eastern Day And Night
   • Chicago Fort Wayne Eastern Day And Night  

Oshkosh Railroad Bridge At Night
   • Oshkosh Railroad Bridge At Night  

Two High Speed Freight Trains One With DPU Waupaca Wisconsin
   • Two High Speed Freight Trains One With DPU...  

Soo Line #736 Steam Locomotive Sits Next To Switching Diesel In Appleton Wisconsin
   • Soo Line #736 Steam Locomotive Sits Next T...  

Switching Midwest Paper Combined Locks Wisconsin
   • Switching Midwest Paper Combined Locks Wis...  

Train Follows Semi Truck To Truck Stop?
   • Train Follows Semi Truck To Truck Stop?  

Long Train Through Green Bay
   • Long Train Through Green Bay  

Appleton - Little Chute Canadian National Switching
   • Appleton - Little Chute Canadian National ...  

Canadian National, Union Pacific & Norfolk Southern Quad Header
   • Canadian National, Union Pacific & Norfolk...  

Canadian National 3106 In Neenah Wisconsin Local. CN Pick Up To Yard
   • Canadian National 3106 In Neenah Wisconsin...  

Antique SEPTA Trolleys Of Philadelphia Re Release
   • Antique SEPTA Trolleys Of Philadelphia Re ...  

Strasburg Railroad #475 January 2020 FSC Re Issue 2021
   • Strasburg Railroad #475 January 2020 FSC R...  

Black Hills Central Railroad #110 Steep Hill Climb With Wheel Slip. 1880 Train
   • Black Hills Central Railroad #110 Steep Hi...  

1880 Train Black Hills Central Railroad #110 Keystone To Hill City South Dakota
   • 1880 Train Black Hills Central Railroad #1...  

Ride On 1880 Train Black Hills Central Railroad #110
   • Ride On 1880 Train Black Hills Central Rai...  

Union Pacific 4014 Big Boy Pacific MO to Jefferson City MO
   • Union Pacific 4014 Big Boy Pacific MO to J...  

Big Boy 4014 Running Through St Louis, Kirkwood And Pacific Missouri
   • Big Boy 4014 Running Through St  Louis, Ki...  

Union Pacific 4014 Big Boy Up Close And Personal In St. Louis Missouri
   • Union Pacific 4014 Big Boy Up Close And Pe...