SBB awards framework interlocking contracts worth $US 1.8bn

Hitachi, Siemens, and Stadler Rail will be able to bid for individual contracts within the deal. Photo Credit: SBB SWISS Federal Railways (SBB) has awarded framework contracts worth SFr 1.4bn ($US 1.8bn) to Hitachi, Siemens, and Stadler Rail to supply a new generation of digital interlockings. The framework contracts are for 10 years, with three options for contract extensions of five years each, and maintenance and support of the individual systems for 25 years. SBB went out to tender for the contract in two lots in autumn 2022. Lot 1 comprises the complete systems, including the hardware and software for the interlockings. Lot 2 involves the supply of object controllers - electronic components used to operate switches and signals or monitor track sections. Both lots include services such as development and training, as well as maintenance and support. Hitachi and Siemens submitted the best offers for Lot 1, while Stadler Rail submitted the best offer for Lot 2. Contracts for the supply of the individual interlockings will be awarded continuously throughout the phased modernisation process, and Hitachi, Siemens, and Stadler Rail can participate in all the tenders. SBB will select the most advantageous offer for each tender. “The fact that Lot 2 goes to Stadler may be misunderstood,” SBB explains. “Stadler, Hitachi, and Siemens are eligible to participate in the specific requests for proposals for Lot 2.” 1950s technology SBB operates almost 500 interlocking systems in Switzerland. They represent various, sometimes outdated, generations resulting in high complexity and high maintenance costs. About half of the interlockings still use relays and are based on technology from the 1950s. SBB says the expertise required for their maintenance is also being lost and this outdated technology is preventing further development of the network, including the installation of additional switches. “The introduction of digital interlocking systems is a key prerequisite for the implementation of cab signalling,” SBB says. “This is the basis for allowing more trains to run at shorter intervals. “A new generation of digital interlocking systems will introduce a uniform, future-proof system. The components will be standardised and modular, allowing individual parts to be easily replaced as needed. This makes the systems more flexible and cost-effective to operate; they are also easier to modernise. “Since this is a new generation of interlocking systems, they will be tested and functionally tested with the selected suppliers for use on the densely trafficked network with freight and passenger traffic prior to their initial commissioning,” SBB says. Commissioning of the first of the new interlockings is expected in 2029, and the programme will last for about 40 years. However, 80% of the systems will be replaced over the next 20 years. The replacement of the interlockings will be based on various criteria, particularly the end of their service life, the benefits of the upgrades, and the nationwide implementation of cab signalling. By introducing new technology, SBB expects to require significantly fewer interlocking systems in the future.