Southbound Process - Despacho Previo 
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Despacho Previo Policy Changes
effective August 15, 2006.
Overview
Despacho Previo is a process that was developed for clearing southbound rail shipments into Mexico and to reduce congestion and interchange delays at the border. Despacho Previo allows for the interchange of run-through trains rather than individual cars – expediting southbound shipments. The process applies to all car types, with the exception of intermodal equipment.
Primary Features and Benefits
- Broker notification within hours following online billing or receipt from connections.
- A free time is allowed for clearance of Mexican customs. After the free time has expired, Union Pacific assesses a document delay charge per day. After the 10th chargeable day, document delay charges increase. For exact free time allowed and document delay charges, please see UP 6004 (PDF File) , Item 8530.
- Most Mexico-bound traffic will be held at satellite yards away from the border until cleared by Mexican Customs for movement into Mexico.
- Once cars are cleared, they are assembled into pre-blocked run-through trains for the Mexican railroads, virtually eliminating further switching at the border.
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Q&A
| Q. | Is the document delay charge in addition to the standard demurrage charge? |
| A. | No. The standard demurrage charges no longer apply on traffic exported to Mexico. The document delay charge replaces demurrage charges. |
| Q. | Are Sundays included in the free time? |
| A. | No. Sundays do not count in the computation of free time. However, after the document delay charge has begun, Sundays will be chargeable. |
| Q. | What is the need for the satellite yards? Why not send all of the traffic directly to the border and hold? |
| A. | Most of our gateway yard facilities do not have sufficient capacity to hold/switch all of the traffic moving into Mexico. Once the traffic is cleared however, Union Pacific places it in the appropriate Mexican "block" for direct delivery to the Mexican railroads. |
| Q. | How does the Despacho Previo process help traffic movement coming northbound out of Mexico? |
| A. | By delivering southbound run-through pre-blocked trains, the Mexican carriers are able to better use their border yards for northbound switching and blocking of United States-destined traffic. |
| Q. | How does Despacho Previo affect traffic destined to local industries at U.S. border locations? |
| A. | Since this is not international traffic, this business moves directly to these cities. Any demurrage accrued will be based on current domestic demurrage tariffs. |
Despacho Previo Process Steps


