| Owner: | Union Pacific Railroad Company |
| Type: | Chassis |
| AAR Class: | : |
| AAR Type: | Z171 |
| Detail Info: | Trailers, Chassis (Refer to Second and Third Numeric under Chassis), 40 ft. to 48 ft. Gooseneck, outside length, O.S. Height 4'6" and under at locking plane, Tandem Width 96" or under |
| Max Gross Weight: | 68000 |
| Load Limit: | 61700 |
| Ext L/W/H: | 48' 0" / 8' 0" / 3' 11" |
| User Notes: | Load Limit: 61700 |
