Safety of Operation

Municipal Subways has implemented the following measures to ensure safe operation of trains.

Municipal Subways employ CTC (Train Concentration Control System), PTC (operation management system), ATC (automatic train control device), power management system, equipment command system, etc. to ensure safe operation. All information from each system is sent to the General Command Station, and a centralized transport management system centered on the general command station, trains, and maintenance facilities, enabling real-time response.
CTC is a device that collects information on the operation of all trains at the general command station and centrally controls signals and points at each station.
PTC is a system that automatically controls train operation, guidance display, etc. based on train operation information from CTC and train schedules stored in advance.
ATC is a device that gives the indicated speed (signal) based on various conditions, such as the track condition and the distance from the preceding train, and when the speed of the train is above the speed limit, it automatically applies brakes to safely control the speed of the train.

Reference materials for ATC (PDF: 15KB)

The power management system monitors the power transmission status of all substations from the general command station, performs failure processing control so that it can respond promptly in the event of an abnormality such as a power outage, and also performs automatic processing of power consumption management.
The equipment command system is a system that centrally monitors the operation and failure status of electrical equipment and mechanical equipment such as ventilation and air conditioning pump equipment at each station, signal security devices, and communication equipment such as telephones at the general control station.

To become a municipal subway driver, after experiencing a station clerk and conductor, conduct aptitude test as a driver, conduct aptitude test as a driver, conduct a subject course for about three months and a skill course for about five months, and pass the test The person who passed is the driver.
Regarding the driver's driving work, a roll call is made before the driver starts the work, and the supervisor checks the health condition, etc., and then performs driving work. In addition, municipal subways carry out alcohol checks before roll call to establish a system to prevent drunk driving.
Regarding the operation confirmation of operation work, supervisors regularly guides the driver's room to check and provide guidance on the status of basic operations such as braking operations. In addition, through education and training conducted at least 10 times a year, we are working to improve operational knowledge and ensure safety awareness regarding driving handling and handling in case of abnormality.
In addition, if the driver becomes unable to work due to sudden illness, etc., inform the general command station by train radio that it is not possible to board, arrange replacement personnel and instruct the general command station to stop driving depending on the situation. It is supposed to be done. In addition, when the driver releases his hand from the handle, such as when the driver loses his mind, an emergency brake automatically enters, and a system that stops the train.

Vehicle maintenance is carried out regularly (inspection before and after use of the vehicle, every 10 days, 90 days, 4 years, every 8 years). As a measure to prevent vehicle derailment accidents, we properly manage the weight difference between the left and right of the vehicle so that it is within 10% or less.

Regarding the maintenance of the tracks, the staff walks on foot during business hours and patrols on the train, and after the end of business (after the end of the car), inspect the track condition and materials, and if necessary, solidify the tracks and rails We perform maintenance work such as shaving. As a measure to prevent derailment accidents, derailment prevention guardrails are laid on curves with a radius of 200 m or less and necessary points.

• On the day of driving, the driver will receive a roll call before boarding.
• Report your mental and physical condition to the supervisor.
• Read the instructions, communication notes, and notes.
• The supervisor checks the crew's mental and physical condition and reading items, and communicates notes as necessary.
• Read the day's work contents (such as the boarding route) and confirm with the supervisor.
• The clock has been adjusted and the roll call is finished.

Municipal Subways always check alcohol before receiving a roll call or wake-up roll call and make sure that you do not drink alcohol before you get on board.
Subway crew roll calls include roll calls before boarding, sleeping roll calls, wake-up roll calls, and end roll calls.