six HSR trainsets. The 2023 Project Update Report projects the purchase of these to be made in 2024. It is estimated that for the entire Phase 1 system up to 95 trainsets might be required. Train design and station-sharing The CAHSR trains will use a different standard than Caltrain for their floor height above the rails. The CAHSR trains have a floor height of above the rails, which is significantly higher than the floors of Caltrain's commuter trainsets. To resolve this issue, Caltrain is procuring new Stadler KISS EMUs that have doors at both heights. Each train platform uses either one height or the other, and only a few of the stations will service both types of trainsets. Thus, in the Bay Area most of the stations will be used exclusively by Caltrain and not be able to support CAHSR trainsets. HSR passenger line operations Request for Qualifications In April 2017, the CHSRA announced it had received five responses to its request for qualifications for the contract to assist with the development and management of the initial phase of the high-speed line and be the Interim IOS operator. China HSR ETO Consortium: China Railway International, Beijing Railway Administration, China Railway Eryuan Engineering Group, China Railway Corporation DB International US: DB International USA, Deutsche Bahn, Alternate Concepts, HDR FS First Rail Group: Ferrovie dello Stato Italiane, FirstGroup, Trenitalia, Rete Ferroviaria Italiana, Centostazioni, Italferr, McKinsey & Company Renfe: Renfe Operadora, Globalvia Inversiones, Administrador de Infraestructuras Ferroviarias Stagecoach Group: Stagecoach Group, Coach USA Selected Early Train Operator In October 2017, the California High-Speed Rail Authority announced that DB E.C.O. North America Inc (formerly known as DB Engineering & Consulting USA Inc.) had been chosen as the Early Train Operator. This decision came after a Request for Qualifications was put out by the Authority looking for well established groups able to provide operational guidance for the future system once opened. Services provided by DB International US are: Project Management Ridership and passenger revenue forecasts Preferred revenue collection systems Rolling stock fleet size and interior layout Service planning and scheduling Operations and maintenance cost forecasting Station design & operations Optimization of life cycle costs Procurements Fare integration and Interoperability Safety and security Operations control/dispatching responsibilities Maximizing system revenues Marketing and branding Ridership estimates DB E.C.O. North America Inc. (the Early Train Operator) has also done an analysis of likely ridership using updated data and a