3. Coordinated Rescue Operations Management in Traffic Accident-Induced Disasters
Rescue operations that involve freeing individuals from severely damaged vehicles are recognized as some of the most intricate and demanding tasks faced by emergency responders. The Law on the Investigation of Accidents in Air, Railway, and Water Transport (Official Gazette of the Republic of Serbia, 83/2018) establishes a detailed legal framework that governs the investigation of accidents and significant incidents across various modes of transport. This framework defines the scope of responsibilities and the authority granted to investigative bodies, as well as the procedures to be followed during investigations involving air, rail, and water transport accidents, including serious maritime and inland waterway incidents (Cvetković, 2024b).
In the context of rail transport, managing incidents can be particularly challenging for those directing rescue operations, especially when large numbers of passengers are involved and when the structural steel components of trains become heavily deformed, making them difficult to cut or manipulate. A notable example of such complexity is the tragic derailment of a passenger train near Bioča, Montenegro, in 2006, which resulted in 47 fatalities and approximately 200 injuries. Incidents of this magnitude necessitate the deployment of extensive emergency response and rescue teams, armed with a broad array of general and specialized tools (Cvetković, 2024b).
Rail accidents become even more complex when they occur in challenging environments, such as tunnels, bridges, or other hard-to-reach locations, significantly complicating rescue efforts. The presence of hazardous materials transported by train introduces additional risks, requiring not only the execution of rescue operations but also the identification and neutralization of dangerous substances. Safety protocols must be strictly adhered to, and timely communication with the public about potential dangers is crucial. Before any rescue operation can commence, it is essential that responders ensure the proper use of personal protective equipment and take measures to prevent further harm to the injured. It is also vital to confirm that the electrical power has been disconnected, the contact network de-energized, and adequate grounding established (Cvetković, 2024b).
The Regulation on the Investigation of Accidents in Railway Transport (Official Gazette of the Republic of Serbia, 58/2019) provides detailed guidelines for reporting rail accidents and incidents and outlines the steps involved in the investigation process, which is overseen by the Traffic Accident Investigation Center. This regulation also addresses the implementation of safety recommendations and the ongoing monitoring of their effectiveness. When an accident or incident is reported, a decision is made regarding the necessity of an on-site investigation, based on the initial report’s details. The Traffic Accident Investigation Center and relevant authorities are tasked with completing the on-site investigation as efficiently as possible, allowing the infrastructure manager to quickly repair any damage and restore normal rail operations (Articles 6 and 7).
Investigating railway transport accidents involves several critical tasks. In the event of a collision or near-collision of trains, investigators document all locomotives and rail cars involved, assess the condition of the braking systems—including indicators, whether brake pads are engaged or released, and their positioning on the wheels—and evaluate the braking methods used by the train. Additionally, speedometers on locomotives are inspected to verify functionality, and speedometer recordings are analyzed to determine if any emergency braking or abrupt movements occurred during the journey. The condition of the locomotives prior to the accident is assessed, along with the number of individuals present in the control cabin with the train operator, among other factors (Cvetković, 2024b).
During traffic accidents, the leaders of rescue operations must be thoroughly acquainted with the safety and protective features of modern vehicle technologies. When extricating individuals from vehicles, hydraulic shears must be correctly positioned with the blades fully opened. Special care should be taken regarding airbags that may deploy post-collision if they have not yet activated. To mitigate this risk, rescuers should secure the steering wheel with protective covers. When using hydraulic cutting tools, it is recommended to cut at a 90-degree angle relative to the axis of the object being cut. Strict safety protocols must be observed, including: a) only one person should operate the hydraulic tool at a time; b) rescue teams must be well-trained and familiar with general safety procedures when using cutting tools; and c) after the rescue operation is completed, all tools must be thoroughly cleaned, lubricated, and stored properly for future use (Cvetković, 2024b).
Various scenarios necessitate rescue operations to mitigate the consequences of traffic accidents, including vehicle collisions, rollovers, accidents at rail crossings, hazardous material spills, vehicle fires, vehicles that have fallen off steep slopes, vehicles buried by avalanches, and vehicles submerged in water. Conducting emergency rescue operations at vehicle accident sites requires specialized equipment, such as fire extinguishers, tools, and machinery for lifting and moving heavy objects, cutting metal, and freeing trapped structures. Additional equipment includes tools for locating victims and vehicles, lighting and communication devices, first aid kits, evacuation equipment, life support systems for underwater operations, and tools for collecting and decontaminating hazardous materials. Depending on the accident’s specific circumstances, equipment for rescuing people from heights or difficult terrain may also be necessary. Different rescue teams may be deployed based on the incident’s characteristics (Kusainov, 2013). In traffic accidents, emergency rescue sites are typically divided into three zones. The first zone, within a 5-meter radius of the accident, is where specialists involved in direct victim assistance are positioned. The second zone, extending to a 10-meter radius, houses other rescue team members who ensure the readiness of emergency equipment. The third zone, located beyond 10 meters from the accident, contains transport vehicles for rescuers, lighting, fencing, and additional emergency technical equipment (Cvetković, 2024b; Кусаинoв, 2013).
The incident commander, who manages all personnel and technical resources during the operation, plays a crucial role in coordinating the response. This individual is usually appointed at the start of the operation, and all units reporting to the scene are required to coordinate with them. The incident commander organizes the workflow, ensures personnel safety, and secures the necessary rescue equipment. If a rescue team leader or traffic police officer arrives at the scene before the designated commander, they take temporary control of the operation until the commander arrives. Key responsibilities of the commander include conducting an on-site assessment, organizing the immediate rescue of victims while preventing panic, utilizing resources effectively, determining the course of action, allocating tasks to sub-units, and ensuring the completion of all assigned tasks. The primary goal is to extricate the injured from the vehicle and provide first aid. If necessary, a medical aid station should be established at the scene. The commander must also maintain communication with the dispatch center, providing updates on the situation and the resources used or needed, with ongoing communication throughout the operation (Cvetković, 2024b; Кусаинoв, 2013).
In the early stages of rescue operations, efforts focus on helping victims who are not fully trapped but are stuck in deformed vehicle cabins and can be extracted through open windows, hatches, or doors, either independently or with the aid of rescuers. Bent vehicle parts are then loosened, and metal components are cut or removed as necessary (Yue, Abdel-Aty, Wu, & Wang, 2018). Openings may be created in the vehicle’s body, roof, or floor, and in some cases, the entire roof may be removed. The vehicle might also be lifted with jacks or excavated from beneath to free trapped victims. Rescuers must remain alert throughout the operation and ready to extinguish any fires that may ignite, particularly when using powered tools (Cvetković, 2024b; Кусаинoв, 2013).
In railway accidents, once rescuers have entered a train car—whether passenger or freight—they access the interior through secured entry doors that can be opened from the inside or outside. If doors are jammed, metal cutting tools and specialized equipment are used to clear a path. Rescuers use ladders or aerial ladders to enter through windows, employing other suitable tools as needed. In some situations, rescuers may be pulled through windows, while in others, sharp glass fragments must first be cleared. Once inside, rescuers begin locating and aiding injured passengers. When victims are trapped under vehicles, heavy-duty cranes may be employed to lift the vehicles and free the individuals beneath. In some cases, tunnels must be dug, or structural barriers cut through to access victims. Fires in train cars pose significant risks to passengers, as flames can spread quickly through the interior, structural voids, and ventilation systems (Cvetković, 2024b; Кусаинoв, 2013).
Rescuers have several critical duties when responding to fires in passenger trains. These include quickly locating and evacuating passengers to a safe location, searching for any passengers who may have fled the train, and extinguishing the fire. Snow, landslides, rockslides, avalanches, mud, and water can also cause passenger trains to halt unexpectedly. In such instances, rescuers must locate the victims, free them, and provide necessary assistance. When firefighters and rescuers are dispatched to railway fire incidents, their main responsibilities are assisting victims, extinguishing the fire, protecting nearby trains and infrastructure, and preventing environmental damage (Cvetković, 2024b).
When tankers containing flammable liquids catch fire, flames can reach heights of 40-50 meters, and the fire may spread over an area of more than 150 square meters. In these situations, it is essential to cool the tanks with water. The tank’s lid should be secured beneath the barrel cover, or a tarp placed over it if vapors ignite above the tank’s open throat. Spilled liquids should be directed into trenches or absorbed into the ground to mitigate risk, after which they can be safely collected. If multiple tanks are burning simultaneously, the focus must be on cooling the tanks and ensuring the safety of nearby vehicles and structures (Cvetković, 2024b; Кусаинoв, 2013).
If there is a risk of fire spreading to adjacent trains, the burning tank must be relocated to a safe area and promptly neutralized. Firefighting efforts should be conducted from protected positions, especially when dealing with compressed or liquid gas cylinders. While it may be difficult to prevent gas flare-ups entirely, controlled burning is permissible as long as the tank is continuously cooled with water to reduce the risk of explosion. When fires involve trains carrying toxic, poisonous, or explosive materials, specific actions must be taken: relocate the burning train to a safe area, extinguish the fire with powerful water jets, coordinate efforts with those overseeing the cargo, and cover the barrel with a tarp. When multiple tanks are burning, cooling and protecting nearby vehicles and tanks are the priorities (Cvetković, 2024b; Кусаинoв, 2013).
In the event of an aircraft accident near an airport, the airport management is immediately responsible for organizing search and rescue operations for the crew and passengers, involving aviation units and other relevant services, such as fire-rescue, medical, engineering, transport, and police teams. The primary action typically involves evacuating passengers from the aircraft. According to the International Civil Aviation Organization (ICAO), during an aircraft accident, all passengers must use emergency exits on one side of the aircraft’s fuselage, and they must complete the evacuation within 90 seconds (Cvetković, 2024b).
Planning rescue operations for aircraft fires requires consideration of several critical factors, such as the rapid increase in carbon dioxide levels inside the cabin, which can reach fatal concentrations within 2-3 minutes of the fire starting (Furlan et al., 2020). Cabin temperatures can also rise sharply, necessitating firefighting operations to be conducted using protective insulation gear. It is crucial to evacuate passengers while simultaneously fighting the fire from the windward side. Due to the permeability of various openings, it is recommended to remove the aircraft doors first. If an aircraft emits a distress signal or an emergency beacon is triggered by the radio station, search and rescue operations are initiated. The same applies if the aircraft fails to reach its destination within 10 minutes of the scheduled arrival time and loses radio contact with the ground (Cvetković, 2024b; Кусаинoв, 2013).
Search and rescue operations begin once orders are given for the aircraft to take off, and instructions are issued to start ground search and rescue efforts (Cvetković & Miljković, 2024; Cvetković & Miljković, 2024a, 2024b). Rescuers locate the crash site of the airplane or helicopter, and once on the ground, they start searching for survivors and transporting them to safe locations. These efforts can be complicated, as rescuers must ensure the survival of victims, protect them from the elements, and provide basic medical care. Once the bodies of the deceased are cleared from the disaster area, recovery operations, including the collection of remains for identification, can commence. If all passengers perished in the crash, rescuers are also responsible for locating and securing the bodies, recovering the “black boxes,” and safeguarding any valuables. Apart from external inspections, confirming the aircraft’s presence on the ground, and evacuating the injured and deceased, no further activities should occur at the crash site until the chief investigator arrives and initiates the accident investigation. Moving the aircraft before the investigative commission arrives is only permitted if the wreckage obstructs a railway, highway, river, or airport, hindering the safe movement of vehicles or aircraft on essential infrastructure (Cvetković, 2024b; Кусаинoв, 2013).
Water-based accidents present unique challenges, given the variety of vessels with differing purposes, performance characteristics, and speeds; the dynamic nature of water as an element; the transportation of hazardous and harmful substances; and the difficulty of locating vessels in distress, often far from emergency rescue services. Rescue operations in waterborne accidents require coordinated efforts between various specialized teams, including search and rescue services and units that are specially trained and certified. Common causes of accidents in water transport include loss of stability, which can lead to capsizing, loss of buoyancy, collisions with other vessels or obstacles (such as reefs, underwater rocks, platforms, or icebergs), fires and explosions, and the release of hazardous materials from damaged vessels (Cvetković, 2024b; Кусаинoв, 2013).
Each specific rescue operation requires the appointment of a search and rescue coordinator, who is responsible for overseeing the entire operation until it is completed or until it becomes evident that further efforts would be futile. This ensures unity of command throughout the process. The coordinator’s duties include receiving and analyzing all available accident data, identifying the type of emergency equipment on the affected vessels, providing operational information regarding the water area and weather conditions, developing a detailed rescue plan, assigning commanders to the scene, coordinating search and rescue efforts, and organizing communication channels at the search site. The coordinator is also responsible for informing the head of the rescue coordination center about the action plan and ensuring coordination with neighboring rescue services. Additionally, they must oversee the delivery of necessary resources to the victims and maintain a chronological record of the rescue operation (Cvetković, 2024b; Кусаинoв, 2013).
In the event of an air traffic accident, the Regulation on the Investigation of Accidents and Serious Incidents in Air Traffic outlines the procedures for conducting investigations, reporting accidents or serious incidents, providing information about individuals and hazardous materials aboard the aircraft, and maintaining databases of such incidents. The regulation also details the process for monitoring and implementing safety recommendations. When an investigation is initiated, details such as the location, date, and time of the accident or serious incident, the aircraft type and model, state of registration, registration number, crew information, fatalities, injuries, a brief description of the accident, probable cause, and safety recommendations (if applicable) are all included in the notification (Cvetković, 2024b).
If an aircraft accident or serious incident occurs in a foreign country, and Serbia is the state of registration, design, manufacture, or operation, the Traffic Accident Investigation Center promptly acknowledges receipt of the notification and, upon request, provides the foreign country’s competent authority with all available information about the aircraft and crew involved, as well as details about the designated authorized representative from the Center (Regulation, Article 5). The Center takes all necessary measures to read the aircraft’s flight data recorders as soon as possible following the accident. If Serbia does not have the appropriate equipment for reading the flight data recorders, the Center will use equipment from a foreign country, considering the equipment’s capabilities, the time required for the readings, and the equipment’s location (Article 6).