Railroad Transportation Service Companies
| Red River Vly & Western Rlrd (Breckenridge, MN)
Primarily Serving: Fargo, ND - Grand Forks, ND - Saint Cloud, MN - Minnetonka, MN |
| Redmont Railway Co (Red Bay, AL)
Primarily Serving: Decatur, AL - Tanner, AL - Huntsville, AL - Tuscaloosa, AL |
| Remsen Depot (Remsen, NY)
Primarily Serving: Utica, NY - Clay, NY - Syracuse, NY - Schenectady, NY |
| Reno Pacific Rail Corp (Reno, NV)
Primarily Serving: Sparks, NV - Carson City, NV - El Dorado, CA - Loomis, CA |
| Rescar Industries Inc (Gordon, GA)
Primarily Serving: Macon, GA - Warner Robins, GA - Cobb, GA - Athens, GA |
| Re-Trans (Dardanelle, AR)
Primarily Serving: Conway, AR - Little Rock, AR - North Little Rock, AR - Fort Smith, AR |
| Rio Valley Switching (McAllen, TX)
Primarily Serving: Pharr, TX - Hidalgo, TX - Mission, TX - Edinburg, TX |
| Rochester & Southern Railroad (Silver Springs, NY)
Primarily Serving: East Amherst, NY - Buffalo, NY - Rochester, NY - Niagara Falls, NY |
| Rochester & Southern Railroad (Rochester, NY)
Primarily Serving: East Amherst, NY - Buffalo, NY - Niagara Falls, NY - Clay, NY |
| Salt Lake Garfield & Western (Salt Lake City, UT)
Primarily Serving: Sandy, UT - West Jordan, UT - South Jordan, UT - Layton, UT |
| Sam Dunn Enterprises (Longview, TX)
Primarily Serving: Jefferson, TX - Tyler, TX - Shreveport, LA - Bossier City, LA |
| Sam Shortline (Cordele, GA)
Primarily Serving: Cobb, GA - Albany, GA - Warner Robins, GA - Macon, GA |
| San Joaquin Valley Railroad Co (Kerman, CA)
Primarily Serving: Fresno, CA - Madera, CA - Clovis, CA - Hanford, CA |
| Seaboard Coastline Railroad Co (Thomasville, GA)
Primarily Serving: Tallahassee, FL - Valdosta, GA - Albany, GA - Cobb, GA |
| Semo Port Authority (Scott City, MO)
Primarily Serving: Saint Louis, MO - Jonesboro, AR - Jackson, TN - Evansville, IN |
| Sko Railroad/Train Div (Cherryvale, KS)
Primarily Serving: Joplin, MO - Tulsa, OK - Cleveland, OK - Broken Arrow, OK |
| Skunk Train (Fort Bragg, CA)
Primarily Serving: Santa Rosa, CA - Chico, CA - Petaluma, CA - Redding, CA |
| Soo Line Railroad Co (Wabasha, MN)
Primarily Serving: Rochester, MN - Eau Claire, WI - La Crosse, WI - Lakeville, MN |
| Soo Line Railroad Co (Thief River Fall, MN) |
| Soo Line Railroad Co (Valley City, ND)
Primarily Serving: Fargo, ND - Grand Forks, ND - Bismarck, ND - Saint Cloud, MN |
| Soo Line Railroad Co (Glenwood, MN)
Primarily Serving: Saint Cloud, MN - Minnetonka, MN - Eden Prairie, MN - Minneapolis, MN |
| South Kansas & Oklahoma Rlrd (Dewey, OK)
Primarily Serving: Tulsa, OK - Cleveland, OK - Broken Arrow, OK - Joplin, MO |
| South Kansas & Oklahoma Rr (Cherryvale, KS)
Primarily Serving: Joplin, MO - Tulsa, OK - Cleveland, OK - Broken Arrow, OK |
| South Plains Lamesa Railroad (Slaton, TX)
Primarily Serving: Lubbock, TX - Midland, TX - Amarillo, TX - Odessa, TX |
| Southeastern Pa Transportation (Marcus Hook, PA)
Primarily Serving: Wilmington, DE - Newark, DE - Philadelphia, PA - Camden, NJ |
