Study of a BIM-Based Cyber-Physical System and Intelligent Disaster Prevention System in Taipei Main Station

Because of its large area and complicated space utilization, in the event of a disaster, rescue efforts in specific areas of Taipei Main Station would be difficult. In addition, rescue efforts are also difficult to implement, because each area is managed by different units. In order to ensure emergency and safe evacuation of passengers and reduce the loss of related property during a disaster, a suitable disaster prevention system is required. This study conducted risk assessment based on the triggering factors of disaster types over the years. After synthesizing the results of the disaster risk assessment, a disaster preparedness contingency plan was designed. According to the Incident Command System (ICS), this study formulated the usual management measures and emergency response procedures for various levels of disasters. When an accident occurs, the system can automatically initiate various emergency disaster relief measures, monitor the development of the incident, transmit disaster information, and coordinate disaster emergency response procedures. This study established a building information modeling (BIM)-based cyber-physical system (CPS) and intelligent disaster prevention system integrated under the overall management of the Intelligent Joint Emergency Operation Center. The “Taipei Main Station Intelligent Disaster Prevention System” can manage the disaster prevention and relief information of various business entities in a unified way, and provide an intelligent disaster prevention function integrating BIM and virtual reality (VR). This system is functionally verified through exercises such as short-circuiting of wires in advertising boxes, firefighter disaster relief drills, indiscriminate violent attacks, and demolition of explosives. In this study, ICS was established through expert interviews, disaster-causing factors over the years, and a cloud-based electronic management system was established in combination with the BIM platform. The system provides emergency and safe evacuation of passengers in the event of a disaster, and reduces the loss of related properties.


Background
Specific areas of Taipei Main Station are 46.31 hectares. Because of the wide area, complex spatial structure, large flow of people, numerous unidentified people entering and exiting, and wide range of uses, rescue in the event of a disaster is both difficult and dangerous. Each spatial block of the Taipei Main Station is operated by different units; rescue commands are thus difficult to unify in the event of disaster. In October 2019, the Taipei City Government established the Intelligent Joint Emergency Operation Center of Taipei Main Station to coordinate the overall management of specific areas of Taipei Main Station.
Management procedures included activation of various emergencies, integration of monitoring of incident conditions in specific areas of Taipei Main Station, dissemination of disaster information, and coordination of daily management and emergency response

Emergency Reesponse Plan of the Incident Command System
The ICS is a special method for composing and controlling the employment of many highly reliable temporary organizations and public safety professionals to manage various resources in an emergency. ICS is mandated by all responding organizations in the United States to respond to routine and large-scale hazard events [18,19]. The actual use details and usefulness of the system are not known. Ideally, research on these issues should be carried out within the norms of national information systems and their follow-up missions. Disaster related scholars have noted, however, that for some reason, since the 1970s, there has been little empirical support for the use of ICS to varying degrees by various organizations to classify international disasters. The organization and employment of all disaster response events across the country by ICS, regardless of their complexity, duration or size, is even less known [20,21]. Gregory et al. conducted an inductive study of ICS use by fire departments and identified three main factors: structuring mechanisms, constrained improvisation and cognition management methods. [18] This unique bureaucratic system enables a very flexible and reliable organization for complex and changing task environ-Appl. Sci. 2022, 12, 10730 4 of 23 ments. New ICS organizations can take advantage of bureaucracy's control and efficiency advantages while avoiding or overcoming its bureaucratic habits. Bjelland et al. [22] noted that continual improvement in the design, planning, and operation stages is necessary to achieve the effective management and control of tunnel fires. Furthermore, emergency response plans must be adjusted according to risk assessment results, with their scope extending to detection, alarm, mobilization, disaster rescue, evacuation, and maintenance and management at normal times. Wang et al. [23] and Feng et al. [24] have stated that an effective ICS must thoroughly integrate organizations and emergency plans at all levels, and mobilize necessary emergency services and personnel. Moreover, Feng et al. [24], Gai et al. [25,26], Jiang et al. [27], and Zio [28] have recommended that safety management personnel develop emergency response plans and conduct risk assessments before an accident occurs. Chan et al. [29] provided incident command, resource management, and informatics support through internet-based intelligent devices in the chaotic environment of mass casualty incidents. In addition, Falakh et al. [30] used the matrix method to evaluate the probability, frequency, and severity of each factor hazard in hazard identification and risk assessment in a water treatment plant, with 22 potential hazard factors identified. Janzer [31] noted that in the past, most relevant government departments claimed that participating in emergency management training and education was unnecessary. Later, ICS training was verified in several cases to be an effective incident management method. The ICS requires personnel to command and coordinate with other units and act rapidly and correctly during an incident to ensure efficient management. Marion County Government [32] used operational orientation to integrate communications and warnings and clearly defined the responsibilities of counties, cities, volunteers, and other organizations through the planning of an incident management system and emergency support functions to facilitate rapid deployment, disaster relief resource distribution, evacuation and shelter operations, and post-disaster response and recovery activities. Based on the above discussion, this research summarizes the risk assessment of disaster factors over the years, integrates the relevant units of Taipei Main Station and their notification channels with their superiors, as well as the emergency disaster response management and control command for system development, so as to meet the disaster prevention needs of each relevant unit.

BIM-Based Intelligent Disaster Prevention System
Building Information Modeling was introduced in the 1970s. It simulates the real condition of the building based on all relevant information about the project. Now it has developed to BIM5.0: Smart City Cloud [8]. BIM5.0 is the construction of a smart city management platform based on BIM and GIS. It combines urban geographic information with 3D building information model to realize scientific, informational and visual operation management of smart cities. There are many kinds of natural disasters, and domestic and foreign scholars have made great progress in disaster prevention research. Relevant achievements include systems integrating geo-informatics, and cloud services to deal with snowmelt flood disasters [33], mathematical programming models for marine environmental pollution caused by marine liquid chemical spills, and regional climate change and its ecological effects [34]. The framework for the development of these disaster response management systems proposes a new type of information system based on the integration of multidisciplinary tools. Cheng et al. [35] reported that BIM, which has been widely used in the assessment and planning of fire safety, can be combined with wireless sensors and real-time dynamic fire information to effectively control and facilitate fire rescue. Cheung et al. [36] stated that a wireless sensor network is one of the key technologies in the development of the IoT, enabling components and sensors to be combined with equipment and BIM to provide a visual method integrating databases and geometry into digital models. Hosseini et al. [37] indicated that the use of a simulation engine integrating four dimensional-BIM modeling and social force modeling for the fire emergency evacuation of construction sites can provide immediate safety decision support through analyzing evacuation risks using models. Additionally, Bourhim et al. [38] applied the analytic hierarchy process to VR game simulation, which has aided evacuation research. Darko et al. [39] noted that VR and augmented reality can assist users in understanding modular integration. However, because of their inability to promote interoperability and collaboration among participants, open BIM and Industry Foundation Classes formats were used to solve the problem, and multiuser online use was performed through the BIM server application. Kasereka et al. [40] argued that in the case of fire, evacuees must make a quick decision to avoid obstacles and choose the nearest exit door. Thus, in this study, agent-based modeling and evacuation simulation were employed. Rüppel and Schatz [41] used a fire protection design for BIM and a game engine (e.g., fire and smoke) to simulate the predicted spread of fire and smoke and potential routes for safe evacuation and analyzed the overall safety performance of the building. [42] Omar et al. [8] have proposed a (3D) prototype visualization to provide accurate location of interior spaces and facilities help disaster relief. Suhyun et al. [8] have proposed a (3D) prototype visualization to provide accurate location of interior spaces and facilities help disaster relief. This paper uses the above technologies combined with BIM in disaster response emergency evacuation tasks. The "Taipei Main Station Intelligent Disaster Prevention System" developed in this research uses graphical communication to display disaster locations, escape routes, disaster relief routes, and resettlement areas for people with disabilities.

Materials and Methods
The intelligent disaster prevention system developed in this research includes the Taiwan Railway, High Speed Rail, Taipei MRT, Taoyuan Airport MRT, Taipei Underground Street, Eslite Underground Street, Zhanqian Underground Street, Zhongshan Underground Street and Breeze Square, as shown in Figure 1.  The planning of this system integrates the disaster situation that occurs on site in a specific area according to the emergency response mechanism activated by the disaster level. The content includes collecting and reporting disaster information, coordinating disaster reduction management in peacetime, and emergency response measures in the event of a disaster. Based on the analysis of different disaster categories, levels and risks, this study formulates emergency response guidance procedures for disasters of various categories and levels. This can ensure that a large number of passengers in a specific area can be evacuated smoothly to ensure the safety of passengers when a disaster occurs. The research team visited two major stations, Osaka and Kyoto, Japan at the beginning of the system planning period as design examples. The interviewees included Taipei Disaster Response Center, front-line units of fire protection, various business entities around the station, rolling work camp meetings, expert consultation, etc. These are important prerequisites for designing emergency response plans and systems. The research flow chart of this system is shown in Figure 2.

Integrate Related Specification and Documentation
For the development of this smart disaster protection system, this study collected and compiled all relevant public and private internal documents. Based on these documents and plans, the "Taipei Main Station Intelligent Disaster Prevention System" can be deliberated. These documents include:

Integrate Related Specification and Documentation
For the development of this smart disaster protection system, this study collected and compiled all relevant public and private internal documents. Based on these documents and plans, the "Taipei Main Station Intelligent Disaster Prevention System" can be deliberated. These documents include: A. "Ministry of Transportation Disaster Emergency Notification Operation Points" [43].  [45]. D. "Common Fire Protection Plan for Specific Areas of Taipei Main Station" [46]. E. "2018 Annual Fire Protection Plan" [47]. F.
"Report on Special Building Modification and Disaster Prevention Plan of Taipei Main Station Building systems" [48]. G. "Fire Protection Plan for Taipei Station, Taiwan High Speed Rail" [49]. H. "2018 Breeze Fire Protection Plan" [50].

Create 3D-BIM Drawing Data for Taipei Main Station
Taipei Main Station was originally established in 1891. The current station was completed in 1989 and began to provide services. Since the beginning of use, it has experienced expansion and decoration. In addition, it was difficult to preserve the project data in the early years. Some of the interior decorations were not demolished and on-site investigation was carried out to make up for the lack of information. Taipei Main Station is a building with seven floors above ground and three floors underground. The on-site investigation work includes photography, video recording and actual measurement to obtain more accurate information on the current situation. The database uses the COBie format to create table properties. In this study, Archibus software was used to transfer the required spatial data, as shown in Table 1. The names of the added fields and their meanings are shown in Table 1.

Develop Emergency Response Plan for Taipei Main Station
This study integrates various business entities to develop emergency response plans. The main principle is not to break the original disaster prevention and relief organization of each business entity. This study introduces the framework of Incident ICS to establish a joint disaster prevention and relief system. The interview targets include nine units, such as Taiwan Railway, High Speed Railway, Taipei MRT, Airport MRT, four Underground Streets and Breeze Plaza. According to the organization of the Joint Disaster Prevention Center, through the platform conference and consensus camp meeting, the SOP of emergency response plan is established after consensus is reached.

Hazard Factor Analysis
The specific area of Taipei Railway Station includes: four railways, four underground streets and Breeze Plaza, a total of nine areas. The types of disasters over the years include fire, earthquake, computer room accident, suspicious gas, accidental terrorist attack, typhoon, flood, traffic accident, weapon (explosive) attack, damage to system equipment, and abnormal power outages. According to the theory of disaster risk assessment, it is often expressed as the product of "occurrence probability" (P) and "influence degree" (S).
This study has distributed a Risk Assessment Form for Ten Hazards to be filled out by fire managers and self-defense firefighters in the area. After taking back the risk assessment sheet, the disaster risk assessment sheet for various disasters is sorted out. Finally, a comprehensive disaster risk assessment table for ten disasters is integrated. Resource management during the disaster events is regrouped in the comprehensive disaster risk assessment table. Table 2 is the explanation of the probability of fire disaster. Table 3 is the fire hazard severity statement table. Table 4 is the disaster resilience assessment instruction table. The above three forms are issued to the person filling out the fire risk assessment table (Table 5) as a reference. There are ten possible types of disasters investigated in this study. Table 6 is the final comprehensive disaster risk assessment table compiled in this study. The function of this table is used as reference in the development of "Taipei Main Station Intelligent Disaster Prevention System". This allows the software to reduce or eliminate activities that are likely to occur during normal times; once an immediate hazard impact is identified, relevant preventive measures can be taken quickly.

Probability of Disaster Description
Extremely high Sporadic or miniature fires in a single area High Small fires occupying 25% of a single area Middle Medium-sized fires occupying 50% of a single area Low Large fires covering 75% of a single area Very low Huge fire spanning more than two areas (Source: Research Data).

Types of Disasters and Definitions of Disaster Levels
This study refers to the key points of disaster emergency notification operation regulations of the Ministry of Communications [34], and analyzes the disaster level when various types of accidents occur in a specific area of Taipei Main Station. In this paper, the scope of various disasters and the related fields near the disaster site are classified according to the scale of the disaster, the state of casualties and the importance of news. The disaster is divided into three levels: the third-level disaster (minor disaster) is the yellow-light warning; the second-level disaster (medium disaster) is the orange-light warning; and the first-level disaster (big disaster) is the red-light warning (as shown in Table 7). The system will automatically export disaster relief Standard operating procedures (SOP) according to various disaster levels.

Develop "Taipei Main Station Intelligent Disaster Prevention System"
The system platform proposed in this study was integrated and developed on the basis of a central supervisory and remote control (CSRC) system, including dual-screen management, a data center, the Joint Emergency Operation Center, and a general disaster prevention center. The operating system was linked to the data center, as illustrated in Figure 3. In Figure 3, the system data interface includes Fire alarm, CCTV, CSRC, Graphic and Control. The system uses a dual-screen design to display Google Map and BIM/Facility management. The system platform includes: A. Database system: Microsoft SQL Server was the database management system used in this study platform and was responsible for the connection of back-end data management and graphics integration; B. Graphics display system: Google Map and BIM (Revit) performed the front-end graphic display of related information, displaying coordinates and related action paths on the relevant webpage. C. Communication protocol architecture: The communication architecture integrated the underlying data of the system, connected the system in series and quickly switched for the data querying of pictures or texts ( Figure 4).   The main content of developing this intelligent disaster prevention system was to integrate various fire protection tools, alert relevant personnel, and notify the fire department of relevant information when a fire occurs. Its functions are described as follows: A. MAP/BIM: Display disaster information and the regional map division management model, apply Google Maps as the construction platform, and use FORGE as the 3D graphic switching platform; B. Equipment information query: Provide disaster prevention and relief resources, equipment information, and equipment maintenance functions; C. Image file management: Upload and download files related to disaster prevention and relief resources; D. Disaster record management: Manage disaster prevention and responses to previous warnings; E. Emergency signal management: Provide four-level disaster signal display and notification, fire equipment status monitoring, and abnormal signal dispatch management; F. Dispatchment and maintenance management: Provide preventive maintenance, dispatch management, and inspection management required for the maintenance management system; G. Data analysis: Weakness analysis (excessive amount of abnormal equipment damage) and excessively high frequency reporting from the areas of disaster sites.  The main content of developing this intelligent disaster prevention system was to integrate various fire protection tools, alert relevant personnel, and notify the fire department of relevant information when a fire occurs. Its functions are described as follows: A. MAP/BIM: Display disaster information and the regional map division management model, apply Google Maps as the construction platform, and use FORGE as the 3D graphic switching platform; B. Equipment information query: Provide disaster prevention and relief resources, equipment information, and equipment maintenance functions; This intelligent disaster prevention system can be connected to a central data center through a web terminal, which grants access to the integrated management platform of disaster prevention and relief information to users. The system development environment was Apache Tomcat; the front-end was JSP and JavaScript; the back-end was Java; and the database used the Microsoft SQL Server.

Results
This intelligent disaster prevention system achieved self-sensing, automatic execution, and automated decision-making of fire information through an integrated management platform such as a series connection of a fire alarm, CSRC, and central monitoring system and disaster prevention and relief information, as depicted in Figure 5. To shorten the disaster relief time, the system adopted a one-click trigger method to shorten the response time of the Emergency Operation Center. The system can automatically provide an on-site equipment data map, suggest response actions, and integrate with the BIM disaster relief information of the Emergency Operation Center. This system can also replace conventional manual reporting with its transmission of disaster relief information, thereby reducing the possibility of disaster relief delay and providing disaster relief within the "golden time". 5. To shorten the disaster relief time, the system adopted a one-click trigger method to shorten the response time of the Emergency Operation Center. The system can automatically provide an on-site equipment data map, suggest response actions, and integrate with the BIM disaster relief information of the Emergency Operation Center. This system can also replace conventional manual reporting with its transmission of disaster relief information, thereby reducing the possibility of disaster relief delay and providing disaster relief within the "golden time".

Predisaster (Usual) Preparedness
This intelligent disaster prevention system promoted the performance of pre-disaster preparation work by relevant personnel at normal times. These pre-disaster preparations included self-inspecting disaster prevention procedures, establishing a list of fire

Predisaster (Usual) Preparedness
This intelligent disaster prevention system promoted the performance of pre-disaster preparation work by relevant personnel at normal times. These pre-disaster preparations included self-inspecting disaster prevention procedures, establishing a list of fire protection organizations, formulating evacuation plans, training fire protection organizations, assisting in evacuation planning and drills, and strengthening the self-rescue and disaster prevention capabilities of various units and coordinated disaster relief. The content included the following: A. On-site situational training: Conduction of disaster prevention and relief education training using on-site 720-degree photos 1 as shown in Figure 6. The images in Figure 6 include: Scan the QR Code to apply for repairs when the facility is found to be faulty during the inspection. (d) After the regular inspection records are archived, they can be automatically recorded to the back-end management platform. The system can display the inspection route and inspection time.
C Reporting to the supervisory unit according to standard operating procedures. In Figure 8, the image on the left is all relevant higher-level organizations of the disaster prevention and control center; the picture on the upper right is the reporting matter; the picture on the lower right is the contact information of the higher-level unit. In this study, the disaster level is divided into three levels. In Table 8, the texts marked in yellow are the units that need to be notified when the Level-3 disaster occurs; the texts marked in orange are the units that need to be notified when the Level-2 disaster occurs; the texts marked in red are the units that need to be notified when the Level-1 disaster occurs.

Disaster Management
This intelligent disaster prevention system can perform data collection, analysis, actuation, and display through the 3D BIM visual model during disasters. For example, a 3D model can be used to query the location of fire and disaster relief equipment in the building to ensure the consistency, continuity, and integrity of information transmission between various operating units in the building. Moreover, through centralized data management and functional modules in the operation platform, emergency management, inspection, and response within the organization can be coordinated among units, thereby achieving management effects such as response efficiency and resource utilization optimization. The content included the following: A Adoption of response-triggered standard operating procedures. The related operations include (a) dismiss the alarm, (b) file a case, (c) report, (d) evacuate, (e) initiate disaster relief, (f) expand area and (g) manage the aftermath (Figure 9). This standard handler avoids panic-stricken errors. B Use of graphics instead of text to explain relevant locations, telephone numbers, and disaster relief facilities. The images in Figure 10 include ( (Figure 13). This process mainly comprised collecting, evaluating, processing, compiling, and reporting disaster situations.
(c) fire protection, (d) control area, (e) buffer and (f) rescue waiting areas, as summarized in Figure 11. D. The intelligent disaster prevention system developed in this research has the function of triggering all actions with one key, including: (a) One click action, (b) LINE report, (c) marquee information, (d) disaster location, (e) BIM escape, (f) Level-3 signal trigger, (g) CCTV, (h) nearest exit, and (i) nearest fire escape (Figure 12). E. Reporting follow-up information for expanded response measures: Integration of replies from designated units with current situation information, such as (a) review of the extended areas, (b) buffer areas, (c) examine extended areas and (d) disaster relief support inquiry ( Figure 13). This process mainly comprised collecting, evaluating, processing, compiling, and reporting disaster situations.  display disaster relief information, including (a) fire locations, (b) smoke prevention, (c) fire protection, (d) control area, (e) buffer and (f) rescue waiting areas, as summarized in Figure 11. D. The intelligent disaster prevention system developed in this research has the function of triggering all actions with one key, including: (a) One click action, (b) LINE report, (c) marquee information, (d) disaster location, (e) BIM escape, (f) Level-3 signal trigger, (g) CCTV, (h) nearest exit, and (i) nearest fire escape (Figure 12). E. Reporting follow-up information for expanded response measures: Integration of replies from designated units with current situation information, such as (a) review of the extended areas, (b) buffer areas, (c) examine extended areas and (d) disaster relief support inquiry ( Figure 13). This process mainly comprised collecting, evaluating, processing, compiling, and reporting disaster situations.  C. Application of a one-click trigger to report relevant integrated information to the fire department and all co-construction units. The system used BIM to automatically display disaster relief information, including (a) fire locations, (b) smoke prevention, (c) fire protection, (d) control area, (e) buffer and (f) rescue waiting areas, as summarized in Figure 11. D. The intelligent disaster prevention system developed in this research has the function of triggering all actions with one key, including: (a) One click action, (b) LINE report, (c) marquee information, (d) disaster location, (e) BIM escape, (f) Level-3 signal trigger, (g) CCTV, (h) nearest exit, and (i) nearest fire escape (Figure 12). E. Reporting follow-up information for expanded response measures: Integration of replies from designated units with current situation information, such as (a) review of the extended areas, (b) buffer areas, (c) examine extended areas and (d) disaster relief support inquiry ( Figure 13). This process mainly comprised collecting, evaluating, processing, compiling, and reporting disaster situations.   (e) (f)

Postdisaster Management
The post-disaster emergency assessment of this intelligent disaster prevention system constituted the requesting of relevant professional and technical personnel to make a preliminary emergency judgment on damage levels of affected buildings within a short period of time after a disaster occurs, and to establish a list of casualties and facilitate implementation of relevant disaster emergency response measures by the commander of the Emergency Operation Center. The content included the following (Figure 14): (a) Generation of casualty and medical information; (b) Archiving of relevant disaster record documents after the alarm is switched off;

Postdisaster Management
The post-disaster emergency assessment of this intelligent disaster prevention system constituted the requesting of relevant professional and technical personnel to make a preliminary emergency judgment on damage levels of affected buildings within a short

Discussion
As mentioned in Section 2.3, Cheng [36] and Cheung et al. [35] have applied BIM and wireless sensor IoT in fire information management, but their studies lacked verification of the ICS disaster relief response. Bourhim et al. [38] and Kasereka et al. [40] have used VR to simulate evacuation, but they did not incorporate the IoT into the simulation models. In addition to the aforementioned research contributions, this study contributed in terms of the following novel methods and breakthroughs: A. This study established an E-management system of the ICS, which provided (A) equipment health inspection and evaluation; (B) equipment early warning services; (C) disaster prevention and early warning services; (D) disaster assistance and reporting services; (E) disaster assistance and relief services; and (F) immediate postdisaster damage assessment services ( Figure 15); B. The intelligent disaster prevention system constructed in this study had complete system integration, including the fire-fighting radio dispatch system in the whole district, real-time multidirectional wireless calls, independent telephone lines, LINE and SMS push notifications, and real-time audiovisual internal and external disaster relief information reporting and contact. Furthermore, the system was fully integrated into the ICS; C. One-click trigger method for reporting to relevant units: The entire system can be triggered to rapidly notify relevant internal units and fire brigade through the issuing of a single command. The system can also collect equipment information at the disaster location and display the nearest exit and optimal rescue location for personnel at each location ( Figure 16). D. A drill was conducted on National Disaster Prevention Day, simulating several emergency situations such as short circuits of billboard wires resulting from an earthquake, suppression of an indiscriminate violent attack by the military police, and disposal of an explosive by the Criminal Investigation Bureau. Figure 17 is the

Discussion
As mentioned in Section 2.3, Cheng [36] and Cheung et al. [35] have applied BIM and wireless sensor IoT in fire information management, but their studies lacked verification of the ICS disaster relief response. Bourhim et al. [38] and Kasereka et al. [40] have used VR to simulate evacuation, but they did not incorporate the IoT into the simulation models. In addition to the aforementioned research contributions, this study contributed in terms of the following novel methods and breakthroughs: A. This study established an E-management system of the ICS, which provided (A) equipment health inspection and evaluation; (B) equipment early warning services; (C) disaster prevention and early warning services; (D) disaster assistance and reporting services; (E) disaster assistance and relief services; and (F) immediate post-disaster damage assessment services ( Figure 15); B. The intelligent disaster prevention system constructed in this study had complete system integration, including the fire-fighting radio dispatch system in the whole district, real-time multidirectional wireless calls, independent telephone lines, LINE and SMS push notifications, and real-time audiovisual internal and external disaster relief information reporting and contact. Furthermore, the system was fully integrated into the ICS; C. One-click trigger method for reporting to relevant units: The entire system can be triggered to rapidly notify relevant internal units and fire brigade through the issuing of a single command. The system can also collect equipment information at the disaster location and display the nearest exit and optimal rescue location for personnel at each location ( Figure 16). D. A drill was conducted on National Disaster Prevention Day, simulating several emergency situations such as short circuits of billboard wires resulting from an earthquake, suppression of an indiscriminate violent attack by the military police, and disposal of an explosive by the Criminal Investigation Bureau. Figure 17 is the TV display during the drill simulation. Figure 18 shows the shows of some specific areas of drill on National Disaster Prevention Day in Taipei Main Station. TV display during the drill simulation. Figure 18 shows the shows of some specific areas of drill on National Disaster Prevention Day in Taipei Main Station.
This system has been conducted in a disaster prevention exercise on the National Disaster Prevention Day in 2020. The scene was (1) the fire in an advertising box caused by the earthquake caused a short circuit, and the firefighters carried out disaster relief drills; (2) the indiscriminate violent attack was subdued by the military police (on the (d) Drill simulation of Figure 6); (3) the explosives were dismantled by the Criminal Bureau's blast squad. It has been verified that the system has excellent function through actual exercises. This "Taipei Main Station Intelligent Disaster Prevention System" has won the Smart Transportation Award in 2020 ( Figure 19) [54].  This system has been conducted in a disaster prevention exercise on the National Disaster Prevention Day in 2020. The scene was (1) the fire in an advertising box caused by the earthquake caused a short circuit, and the firefighters carried out disaster relief drills; (2) the indiscriminate violent attack was subdued by the military police (on the (d) Drill simulation of Figure 6); (3) the explosives were dismantled by the Criminal Bureau's blast squad. It has been verified that the system has excellent function through actual exercises. This "Taipei Main Station Intelligent Disaster Prevention System" has won the Smart Transportation Award in 2020 ( Figure 19) [54].

Conclusions
In this study, a BIM model for Taipei Main Station has been established. The risk factors have been analyzed to formulate the SOP of the emergency response plan. The "Taipei Main Station Intelligent Disaster Prevention System" has been established through a BIM-based CPS. The system adopted Taipei Main Station as an example disaster location. The contributions of this study are as follows: A. Standardization of disaster prevention and relief reporting, inspection of equipment status, and implementation of a reporting flowchart; B. Integration and construction of an automated function for one-click trigger reporting; C. Combination of the ICS with BIM intelligent management. The cloud management system in this study can currently only apply Taipei Main Station as an example and has already demonstrated the integration effect in this building. In the future, this system can be extended to other stations, such as those of Banqiao, Taichung, and Kaohsiung. The system is expected to expand to various stations for implementation of smart city and transportation integration functions. In the future, mixed reality can also be introduced into the system to guide exit at usual times as well as to assist the public in disaster relief.

Conclusions
In this study, a BIM model for Taipei Main Station has been established. The risk factors have been analyzed to formulate the SOP of the emergency response plan. The "Taipei Main Station Intelligent Disaster Prevention System" has been established through a BIM-based CPS. The system adopted Taipei Main Station as an example disaster location. The contributions of this study are as follows: A. Standardization of disaster prevention and relief reporting, inspection of equipment status, and implementation of a reporting flowchart; B. Integration and construction of an automated function for one-click trigger reporting; C. Combination of the ICS with BIM intelligent management. The cloud management system in this study can currently only apply Taipei Main Station as an example and has already demonstrated the integration effect in this building. In the future, this system can be extended to other stations, such as those of Banqiao, Taichung, and Kaohsiung. The system is expected to expand to various stations for implementation of smart city and transportation integration functions. In the future, mixed reality can also be introduced into the system to guide exit at usual times as well as to assist the public in disaster relief.