On-board Signaling System

The on-board signaling system receives and processes information from trackside equipment to control train operations.
It is compatible with conventional, metropolitan, and high-speed railways with operating speeds of up to 350 km/h,
ensuring safe operation and accident prevention. Techville has also established KTCS-2 on-board equipment (KVC) and BTM test facilities,
featuring an integrated trackside-to-on-board test system and MultiTel EBTM equipment capable of verifying all ETCS-standard functions.
This makes it the only testing environment in Korea capable of pre-verifying KTCS-2 functions across both trackside and on-board systems.

On-board Signaling System

On-board Signaling System
KTCS-2

The on-board signaling computer (KVC) serves as the core component
of the on-board signaling system for conventional, metropolitan,
and high-speed railways with maximum operating speeds of up to 350 km/h.

  • Ensures interoperability with European ERTMS/ETCS Level 2
  • Achieved SIL (Safety Integrity Level) 4 as defined in IEC 62425
  • Train speed management and protection through Distance-to-go ATP
    (Automatic Train Protection) function
  • Includes ATS (Automatic Train Stop) function
  • Determination of train speed and position
  • Monitoring of train speed and movement
  • Management of Movement Authority
  • Determination of driving mode and level
  • Determination of Maximum Restriction
    Speed Profile (MRSP)
On-board Signaling System-KTCS-2
  • KVC

    Exchanges data between the trackside
    and on-board signaling devices, as well as functional data between the on-board signaling device, the driver, and the train, performing monitoring and control functions.

  • BTM

    Interfaces with the trackside balise,
    transmitting power pulses to activate the balise
    and processing the data received from it before sending the information to the On-board
    Signaling Computer (KVC).

  • STU

    Performs encryption and decryption functions to ensure the reliability and security of data transmitted wirelessly between the trackside
    and on-board signaling devices.

  • LTE-R Module

    Responsible for wireless data transmission and reception between the RBC and the on-board signaling device via the LTE-R network.

  • JRU

    Stores all relevant data necessary to reconstruct various situations such as accidents,
    equipment operations, and driver actions.

  • DMI

    Provides direct communication between
    the on-board signaling device and the driver to ensure safe train operation, allowing the driver to monitor the train’s status in real time
    through the DMI.

ATS Mode Operation
  • Receives signal information from
    the ATS trackside transponder and displays driving information on the driver display unit.
  • Simply monitors the speed limit
    and issues a 5-second warning when
    the limit is exceeded if the train does not decelerate, the emergency brake is applied.
ATS Mode Operation
KTCS-1 Mode Operation
  • Receives movement authority (target distance), position, and track information from the balise
    and displays driving information on the driver display unit.
  • Automatically calculates the speed profile
    and monitors the permissible speed.
    when the permissible speed is exceeded,
    a warning is issued, and if deceleration
    does not occur, a service or emergency
    brake is applied.
KTCS-1 Mode Operation
KTCS-2 Mode Operation
  • Receives movement authority (target distance), position, and track information wirelessly (LTE-R) and displays driving information on the driver display unit.
  • Automatically calculates the speed profile
    and monitors the permissible speed. when the permissible speed is exceeded, a warning is issued, and if deceleration does not occur,
    a service or emergency brake is applied.
KTCS-2 Mode Operation

On-board Signaling System
KTCS-M

The on-board signaling equipment consists of the On-board Automatic Train Protection (OATP), On-board Automatic Train Operation (OATO), speed sensors, trackside transponder antennas, driver display unit, and manual control panel.

On-board Signaling System

  • 1

    OATP

    Performs train protection functions such as ATP profiling, emergency brake response, and rollback detection

  • 2

    OATO

    Performs train operation functions such as ATO profiling, train speed control, and adjacent train control

  • 3

    On-board Network Switch

    Connects to the LTE-R
    on-board terminal device to configure the corresponding dual relay for communication with trackside devices

  • 4

    Driver Machine Interface (DMI)

    Displays vehicle data received from MOVC on a 10.4-inch LCD touch panel

  • 5

    Stationary Detection Sensor

    Detects the stationary detection plate installed along the track to determine the stationary position

  • 6

    On-board Antenna

    Receives digital information from the on-board unit installed along the track for train position calculation and transmits it to OATP

  • 7

    Speed Sensor

    Calculates the distance traveled by the train using pulse output and detects the direction of vehicle movement using phase difference

  • 8

    On-board Maintenance Monitoring Device

    Monitors the real-time operational status and fault information of MOVC