ERTMS Signaling levels

ERTMS/ETCS Level 1

Eurobalise without infill

  • Overlay to Existing Signaling System.
  • Movement Authorities through Eurobalise.
  • Train Integrity & Position by Track Circuit.

 

Eurobalise + infill (euroloop, radio, or extra balises)

  • Overlay to Existing Signaling System.
  • Movement Authorities through Eurobalise.
  • Train Integrity & Position by Track Circuit.

 

ERTMS/ETCS Level 2

Eurobalise + Euroradio + Radio Block Center

  • No more Trackside Signals Required.
  • Movement Authorities through GSM-R/FRMCS. Train Position via Eurobalise.

ERTMS Level 2/Hybrid Train Detection (HTD)

Eurobalise + Euroradio + Radio Block Center

  • Movement Authorities through GSM-R/FRMCS. Authorities through Eurobalise.
  • Train Position via Eurobalise.
  • Train Integrity Onboard.
  • Moving Block.

The concept known before as ETCS Hybrid Level 3 (HL3) is now newly referred to as ETCS Hybrid Train Detection (HTD).