FLEXITY Outlook, LRV, Porto, Portugal

For high capacity light rail/metro systems

CITYFLO 250 is a system with onboard automatic train protection (ATP) that is displayed in the driver's cab, with track to train communication via balises. CITYFLO 250 is designed primarily for light rapid transit (LRT) or metro applications running on segregated or non-segregated tracks.

The system has the following characteristics:

  • Drive on sight system
  • Driving supported by EBI Cab automatic train control (ATC) onboard equipment
  • ATP information through balises
  • Mainly segregated track
  • Train detection by EBI Track 200 (TI21) or other track circuits
  • Continuous train supervision through EBI Screen control room

EBI Screen control room

The vehicle is supervised by the EBI Screen control room system. This is a modern computer-based control and supervision system allowing the operator to give commands through a mouse or keyboard with the facility to have the position of the vehicles and optional wayside objects shown on both normal display screens and large rear projection screens. The EBI Screen control room also provides train regulation for the system.

EBI Lock computer-based interlocking

The CITYFLO 250 solution uses EBI Lock computer-based interlockings. These interlockings can be either centralised or distributed, in which case the central unit is located in one place and the object controller units that drive the wayside objects can be located at some distance from the central unit.

EBI Link ATC wayside equipment

The information from the track is passed to the train through a Eurobalise located in the middle of the track. The Eurobalise sends information about speeds and distances and allows the ATP to operate in a "distance-to-go mode". The information to the Eurobalise is derived either directly from the EBI Lock computer-based interlocking or through an encoder connected to the signal.

EBI Track train detection

The detection of vehicles in the CITYFLO 250 solution occurs through the jointless track circuit EBI Track 200 (type) TI21 or any other type of track circuit, which gives continuous detection on the position of the vehicle. The type of track circuit used is not important since the information to the ATP system is sent by balises. If necessary, axle counters can be used instead of track circuits.

EBI Switch point machines

A normal railway type point machine from the EBI Switch point machine range can be used, depending on what is most suitable for the particular market.

EBI Light signals

The CITYFLO 250 solution uses vital signals. The signals are used to give the train proceed or not-to-proceed information. The signalling system can be two, three or four aspect as requested by the customer.

EBI Cab onboard equipment

The onboard equipment consists of EBI Cab, which is a distributed onboard system allowing a modern ATP system with continuous supervision and information updates through balises. The system has a SIL 4 safety level in accordance with CENELEC.


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