ETCS Level 2 is a digital radio-based signal and train protection system. All trains automatically report their exact position and direction of travel to the Radio Block Centre (RBC) at regular intervals. The movement authority is transmitted to the vehicle continuously via GSM-R together with speed information and route data. Train movements are monitored continually by the radio block centre and on-board computer continuously monitors the transferred data and the maximum permissible speed.
The MERMEC Group iCAB 2 Series is a fully compliant ETCS Level 2 onboard subsystem performing safe supervision of train movement with high availability.
It calculates the maximum permissible speed and the relevant braking curves. It monitors the current speed and initiates automatic braking if the permissible speed is exceeded. Key functions include:
- Receipt of data from the RBC including movement authorities, information about the status and characteristics of the track, distance to the next balise.
- Forwarding of position data with respect to Eurobalises to the RBC.
- Calculation of the dynamic speed profile.
- Selection of the most restrictive speed value to be observed at the locations ahead.
- Comparison between the train’s actual speed and the permitted speed with, if necessary, mandatory brake application.
- Display of indications and provision of alerts / warnings to the driver.
- Provision of ‘planning’ information to the driver about the route ahead enabling efficient driving
SERVED RAILWAYS
 |
High Speed |
 |
Main & Regional |
 |
Mass Transit & Light |
 |
Heavy-Haul |
