July 13, 2017

OGI variable-gauge freight bogie completes first testing phase

Written by  Ferran Torga
  • Print
  • Email

SPANISH companies involved in the development and certification of the OGI automatic gauge-changing system have completed the first phase of dynamic testing. The OGI bogies are designed for use on freight routes crossing the Spanish-French border where the track gauge changes from 1668mm to 1435mm.


Following the rules set by the national technical specification (ETH), the system was subjected to 500 consecutive gauge-changing test runs, at a maximum load, on the La Gineta test track in southeastern Spain. This facility is owned by Spain’s infrastructure manager Adif, which is leading the project. On a single day, more than 100 automatic gauge-changing operations between 1435mm and 1668mm were carried out, with no problems detected.

The OGI system is being certified for two types of flat wagon: a MMC3 container wagon with a maximum axleload of 22.5 tonnes and a wheel diameter of 920mm, and an LFT car transporter with 760mm-diameter wheels and a 16-tonne axleload.

Mainline dynamic testing of a minimum of 100,000km and at the wagons’ maximum permitted speed will now be carried out in Spain on both 1668mm-gauge conventional lines and 1435mm-gauge high-speed lines. Dynamic testing will then switch to the standard-gauge cross-border Barcelona - Perpignan line, which is the only mixed-traffic, high-speed line currently in operation in Spain.

The OGI system dates from the 1970s, but in 2014 Adif decided to lead a project to reengineer it and to adapt it to current rolling stock technical specifications. Companies involved in the certification project include OGI, AZVI, which owns open-access freight operator Tracción Rail, and Tria Railway, the sole manufacturer of gauge-change facilities used extensively in Spain.

As with the Talgo and CAF gauge-changing systems, the OGI bogies passively adapt their wheels to each track gauge when passing over a fixed infrastructure composed of rails and check rails which transition the wheels between the two gauges. The system can be installed easily at existing freight yards or stations.

Get the latest rail news

Global news and analysis from IRJ, Railway Age and RT&S by email