This paper examines security vulnerabilities and protective measures across multiple modes of surface transportation in the United States, with particular focus on trucks, pipelines, rail systems, and buses. Drawing on assessments by the Transportation Security Administration (TSA), Department of Homeland Security (DHS), and other government agencies, the paper identifies critical infrastructure threats, including cyber attacks, sabotage, and terrorist activities targeting freight and passenger services. It outlines specific security strategies employed across different transportation sectors, such as access control, surveillance technology, and personnel training programs like the Highway Watch initiative. The paper concludes that effective transportation security requires tailored approaches for each transportation mode rather than a unified strategy.
The demands on the global supply and logistics systems have drastically increased with the growth of global trade and cross-border agreements between the United States and its trading partners. The transportation network within the United States and internationally facilitates the intermodal transfer and delivery of services, goods, passengers, and materials as part of the national and international transportation network. The global supply, logistics chain, and freight transportation networks are supported by rail, road, and pipeline conveyors in addition to air and maritime modes. These three modes of transportation operate both independently and dependently within the global supply and logistics network, delivering goods from source to final destination or serving as intermediary or final delivery conveyors within a system that uses intermodal transportation to deliver raw materials or finished products to end-users.
The rapid growth of the world population, coupled with development of previously underdeveloped countries, has created greater demand for goods and services. This has placed increased pressure on the transportation network to deliver these goods efficiently, cost-effectively, safely, and in a timely manner. The American rail system is a diverse network of rail lines consisting of quasi-governmental organizations, state and local agencies, and private companies. Many of these entities, which are primarily freight rail carriers, have agreements in place to use each other's rail lines and rail cars. These agreements among carriers have created a common cause for rail security among these carriers.
Rail security is a diverse and monumental task because of the different types of rail systems and companies that operate within the United States. The rail system within the United States consists of subways, commuter railroads, long-haul passenger trains, rail lines, rail yards, and passenger rail terminals. These different types of facilities pose different challenges to security professionals tasked with providing security to the nation's railway system due to the uniqueness of the infrastructure. The events of September 11, 2001, created the need for security measures at rail yards, rail passenger terminals, cargo trains, commuter trains, subway systems, and rail lines. The Transportation Security Administration (TSA) has conducted assessments of vulnerabilities to the nation's extensive rail system and has identified several areas where rail security can be improved. TSA has identified threats to critical infrastructure of the rail system such as bridges, tunnels, and signal towers, along with cyber security threats to rail information networks.
Security analyses conducted by the Department of Homeland Security (DHS) and Department of Transportation (DOT) identified vulnerabilities in the shipment of toxic materials as an important aspect of rail security. The identification of these vulnerabilities and consequent recommendations suggested that there should be improvements in railroad system security, access control, and en-route security. Additional recommendations required railroads, freight railroad carriers, and certain rail hazardous materials shippers and receivers to have the capacity to report the location of individual security-sensitive material cars within five minutes and the locations of all cars containing security-sensitive materials within 30 minutes. Security at rail yards consists of increased police presence and security access badges.
Route security is almost nonexistent on freight trains due to the multiple jurisdictions that freight rail lines transit. Authority is given to local police departments to enforce any violations of law that occur against rail lines within their respective jurisdictions. Commuter rail lines are patrolled by commuter rail police or local transit police forces and use bomb-sniffing dogs, enhanced surveillance equipment, and biological and chemical detectors within commuter railroad facilities. Occasionally TSA VIPR (Visible Intermodal Prevention and Response) teams conduct operations within major transit facilities in an attempt to deter possible attacks. Security on long-haul passenger trains is sporadic because there are not enough police officers within the Amtrak Police force to have an officer onboard every train. Passengers are issued tickets with their names, which are verified against their government identification.
The rail system within the United States has one of the most sophisticated computer networks, which is integral to the security and operation of the railway system. This computer network is used to locate and identify the position of trains at all times via signal towers or satellite tracking systems. Security for this system against cyber attacks is integral because this system is critical to the entire railway infrastructure that consists of bridges, tunnels, and signal towers. Railroad freight and passengers have been vulnerable to terrorist attacks in recent years. In a 15-year period from 1998 to 2003, there were approximately 181 attacks worldwide on trains and rail infrastructure such as depots, ticket stations, and rail bridges. These attacks included light rail and subway systems and resulted in 431 deaths and several thousand injuries. Shortly after the events of September 11, 2001, the Association of American Railroads (AAR) and the Transportation Security Administration (TSA) worked together to ensure the safety of the American railroad system.
In the United States, the network of pipelines, commonly called the national pipeline system, is a unique extensive mode of transportation that possesses infrastructure presenting a challenge to security professionals due to its special characteristics and requirements. This large network of pipelines crosses thousands of miles and numerous jurisdictions to transport nearly all the natural gas produced in the United States and approximately 65 percent of hazardous liquids, including crude and refined petroleum products consumed in the United States. These critical pipeline infrastructures are owned by private entities and are buried underground. Pipelines are an efficient and safe mode of transportation, but if they are sabotaged or become targets of terrorist attacks, the disruption of service and delivery of products can have an adverse impact on the global economy and national security.
The TSA Surface Division of Pipeline Security Branch, within the TSA Office of Security Policy and Industry Engagement (OSPIE), has the primary mission of enhancing the security preparedness of the nation's hazardous liquid and natural gas pipeline systems. The Division accomplishes this goal by pursuing three objectives to achieve its transportation sector security goals. Those objectives are as follows: reduce the level of risk through analysis and implementation of security programs, increase the level of resiliency and robustness, and increase the level of domain awareness, information sharing, response planning, and coordination. According to the TSA, these objectives are attained through the support of a combination of programs, projects, and activities that involve maximizing available resources and minimizing duplication of efforts.
"Truck freight vulnerabilities and bus security technologies"
Transportation and security experts are attempting to be proactive by developing tactics, techniques, and procedures to prevent, mitigate, and deter attacks on the nation's transportation infrastructure. The events of September 11, 2001, caused transportation security experts to institute a variety of procedures to minimize the effects of and deter terrorist attacks against the nation's transportation network. Some of these approaches are transferable and can be used in part by security experts at different transportation nodes. However, there is no singular approach to transportation security because each mode of the transportation network presents different challenges and requires a different approach for securing its infrastructure.
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