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SECURITY APPLICATIONS OF INTELLIGENT TRANSPORTATION SYSTEMS Reflections on September 11 and Implications for New York State ![]() |
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A Report to the Legislature by the NYU Wagner Rudin Center for Transportation Policy and Management, at the request of the NYS Assembly Legislative Commission on Critical Transportation Choices
Assemblyman Darryl Towns, Assemblyman Ruben Diaz, Jr. July 2002 |
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Security Applications of Intelligent Transportation Systems Reflections on September 11 and Implications for New York State July 2002
Prepared by At the request of Given the rapidly changing political and technological contexts within which Intelligent Transportation Systems continue to evolve, every effort was made to provide the most recent and accurate description possible of ITS efforts at the federal, state, and local levels. The Authors regret any errors or omissions. |
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EXECUTIVE SUMMARY Prepared at the request of the New York State Assembly Legislative Commission on Critical Transportation Choices, and funded by an appropriation made available from the New York Department of Transportation's budget, the purpose of this report is to provide a review of Intelligent Transportation Systems (ITS) as they relate to New York State transportation programs and policy and to highlight policy concerns for further consideration by the State. Information for this document was obtained primarily through an extensive literature search, including websites for various ITS-related governmental and private organizations. In addition, interviews were held with New York State Department of Transportation officials directly involved with ITS policy and applications. Finally, information was generated from ITS-NY's annual meeting,1 and outreach to its individual members through a written survey. Why Intelligent Transportation Systems are Important for New York Defined as systems that apply "well-established technologies in communications, control, electronics, and computer hardware and software to improve surface transportation system performance," intelligent transportation systems hold much promise for reducing congestion, improving safety, and mitigating negative environmental impacts related to transportation. In some cases, ITS are already being utilized. For example, E-ZPass is already being used throughout the state and New York City has an Advanced Traveler Information System that allows people to view real-time traffic conditions via the internet. The national and state-wide response to the attacks of September 11, 2002, was swift. A large number of activities have been launched and many improvements to homeland security have already been made. However, improved homeland security is a long-term process. The initial response can be characterized as one that engages all possible human resources available for homeland protection on a 24/7 basis with no expense spared. The increased presence of armed security forces and military forces at civilian facilities is evidence of this. Many of these personnel are working long hours, on overtime, a situation which cannot be sustained in the long term. While there will continue to be a need for security personnel in the long term, a national search is underway for technologies that can provide increased security with less manpower. Thus, the application of technologies (ITS) for homeland security is just starting, and their development will require monitoring over a long period of time. Framework for the Report To understand the role of ITS in transportation security, it is important to recognize the key components of ITS. Thus, Section I begins with some definitions and delineations of how ITS and security dovetail. Section II focuses on several activities related to homeland security and ITS at the federal level, while Section III looks more closely at New York's state and local agencies. Section IV provides a brief overview of a number of other initiatives around the country and by different associations and organizations related to transportation. Finally, Section V outlines some key policy considerations for New York State and makes some recommendations for further research and/or action. Potential Issues for New York to Address New York State agencies appear to be at the forefront of dealing with security issues as a result of a long history of planning for and dealing with major incidents, as well as their experience in dealing with the events of September 11, 2001. Nevertheless, there are several issues related to ITS and security that will need to be addressed to varying degrees in the coming months.
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1ITS-NY is an organization that was created to serve as a voice for New York State's ITS concerns at the local, state, regional and national levels. |
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I. Introduction
This study was prepared at the request of the New York State Assembly Legislative Commission on Critical Transportation Choices, and was funded by an appropriation made available from the New York Department of Transportation's budget. Its purpose is to provide an overview of intelligent transportation systems (ITS)2 as they relate to security in New York State in the aftermath of the terrorist attacks of September 11, 2001. Defining Intelligent Transportation Systems As defined by the United States Department of Transportation, Intelligent Transportation Systems (ITS) apply "well-established technologies in communications, control, electronics and computer hardware and software to improve surface transportation system performance."3 Central to most ITS activities are four categories of technologies:
Intelligent transportation systems are utilized to fulfill a number of objectives. They can help reduce congestion, improve personal safety, mitigate the environmental impacts of transportation systems, enhance energy performance, and improve productivity. ITS have been implemented to varying degrees around the country for over a decade, but following September 11, there has been heightened interest in the security applications of ITS. How ITS can contribute to national security objectives lies in the very technologies that are central to such systems. In terms of security applications, for example, sensing helps monitor systems and identify potential threats. Communicating is critical to security, both in terms of preventing incidents and effectively dealing with crises should they occur. Massive amounts of security information can be processed using computing, and algorithms can help detect patterns, and optimize solutions. Security and transportation professionals who have been addressing the question of exactly how ITS can aid in security have clearly acknowledged the utility of these technologies for national and state efforts dealing with "the new realities following 9/11." In fact, there are numerous examples of how current ITS systems mitigated the negative effects of the 9/11 attacks. Initial work has identified roles for ITS in: (1) the prevention of terrorist activities; and, (2) dealing with the aftermath of terrorist attacks. Current thinking within the ITS profession on the use of ITS for security is perhaps best summarized by the following statements drawn from the National Intelligent Systems Program Plan: A Ten-Year Vision. With respect to preventing terrorist attacks, the report notes that: While all terrorist attacks cannot be prevented, the technologies of Intelligent Transportation Systems can offer great promise for preventing attacks.4 If an attack should occur, the report points out that: … many of the technologies and the communications networks being used today to better manage transportation systems can be utilized to assess the extent of damage and facilitate the movement of traffic for recovery, evacuation or quarantine.5 Beyond better surveillance on commercial and passenger vehicles (which may in itself help deter or prevent terrorist incidents) several transportation-related technologies, which could be also be utilized to prevent or deter terrorist attacks, are available, and in many cases already deployed. Among these are the following:6
In addition, technologies exist that enable security personnel to detect the contents of vehicles, including hazardous substances, explosives, and drugs, without opening the vehicles firsthand. Also available are technologies that match a specific vehicle with a specific operator and specific cargo, preventing travel in the absence of a match. Finally, technologies to remotely control the starting and stopping of vehicles and engines are already utilized in many personal vehicles for comfort (e.g. turning on the engine to warm up the car before entering) and could easily be applied for security purposes as well.7 Such technologies have obvious applications in terms of preventing theft and hijackings. Similarly, there are a number of technologies currently available that could aid in the aftermath of an attack by allowing the timely flow of information, increasing the flexibility of systems to accommodate emergency traffic, and decreasing emergency response times. Among these technologies are:8
In all ITS operations, communication between and among various information systems, (e.g., between road conditions monitoring and traffic management centers or between different agencies responsible for transportation systems) as well as communication with the users of the system is critical to successful deployment. The same types of communication have been cited as critical components of improved homeland security systems. Thus, there is synergy between ITS and homeland security. There are several important caveats that bear mentioning prior to continuing. First, while the national interest in transportation security is currently dominated by concerns over aviation, efforts to improve security utilizing ITS are underway in all modes of transportation. However, since ITS refer to surface transportation, this report will only deal with highways, transit, and motor carrier ITS and security activities. Second, when dealing with national and state security, the question of how much information should be available in the public domain is always difficult to address. Indeed, at the January 2002 Transportation Research Board (TRB) Annual Meeting, John Magaw, who formerly led the Transportation Security Administration, stated that the United States must stop making public its intelligence and security measures. He cited the arrest of the infamous "shoe bomber" and the subsequent release of information on what security personnel are now being trained to recognize as suspicious behavior, including paying cash for tickets, no baggage, and multiple trips also paid in cash. By making this information public, those whom the government is trying to deter also become aware of what to avoid. Mindful of these considerations, the information presented in this report comes from sources already made public, such as news reports, periodicals, websites, and publications, as well as from presentations made at the January TRB Annual Meeting in Washington, D.C. No attempt was made to interview officials involved in security matters. Obviously, some agencies are taking additional actions that are not being reported. State legislative committees and similar institutions might consider developing procedures to obtain more detailed information on such processes while not compromising public safety. |
2ITS-NY is an organization that was created to serve as a voice for New York State's ITS concerns at the local, state, regional and national levels. 3U.S. Department of Transportation (USDOT), Federal Highway Administration (FHWA), What We Have Learned from Intelligent Transportation Systems (Washington, D.C.: December 2000). 4ITS America, National Intelligent Transportation Systems Program Plan: A Ten-Year Vision (Washington, D.C.: ITS America, January 2002), p. v. The report is online at http://www.itsa.org/resources.nsf/Files/PPRA_Full_Final/$file/PRA_Full_Final.pdf. 5Ibid. 6ITS America, National Intelligent Transportation Systems Program Plan, p. v. 7ITS America, National Intelligent Transportation Systems Program Plan, p. v. 8Ibid. ITS America and USDOT are assembling resources to address the ITS' role in maintaining and ensuring surface transportation aspects of homeland security. 9This technology is available, but not widely used, partly because false alarm rates are typically higher than with other methods. |
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II. Federal
Activities Aimed at Utilizing ITS for Security
There are a number of efforts currently underway at the federal, state, and local levels to improve transportation security. Many of these make use of ITS either directly or indirectly. For example, in a recent survey of bus transit security systems around the country, the following features were identified as already deployed or planned in several technologically advanced transit systems:
To a large degree, transportation security activities have been undertaken in response to the events of September 11, and in some cases they remain uncoordinated. Thus, before providing any assessment and recommendations on how best to utilize ITS for security in transportation, it is important to have an understanding of the breadth of initiatives already in place. United States Department of Transportation (USDOT)11 USDOT is involved in several ongoing initiatives at the Secretary and agency levels. Immediately following September 11, for example, Secretary Norman Y. Mineta created the National Infrastructure Security Committee (NISC) to "focus on intermodal transportation security issues in the "new" threat environment."12 The Committee brings together representatives from USDOT agencies and members of the business, industry, and labor communities to discuss maritime, pipeline, and hazardous materials concerns. The Committee coordinates with the Office of Homeland Security. Also new at USDOT is the Transportation Security Administration (TSA), which was created within USDOT as a result of the Aviation & Transportation Security Act, which was signed into law on November 19, 2001. Its mission is to "protect the Nation's transportation systems to ensure freedom of movement for people and commerce." Admiral James M. Loy has led the TSA since John Magaw's resignation on July 18, 2002.13 While the initial emphasis has been on improving security in the aviation industry, the TSA is responsible for all transportation modes.14 Complementing the Secretary's initiatives are a number of efforts being carried out by the various agencies within USDOT. Not surprisingly, several common themes have emerged:
Following is a brief description, by agency, of several key activities currently being pursued at USDOT.
The Executive and Legislative branches of the Federal government have also taken steps to improve homeland security, several of which are directly related to transportation security. As part of Public Law No. 107-38, signed by the President on September 18, 2001, Congress provided the first $20B installment on a $40B anti-terrorism supplemental package. The bill included $3.5B for the Defense Department, $8.2B for state recovery, and $8.3B for Homeland Security. Included in the Homeland Security program were:
Congress and the White House also directed $49M to the Washington, D.C. Metro system earlier this year. This funding will be used to purchase and install an array of high-tech security equipment to make it the most protected transit system in the country. Among the measures to be implemented are:
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10Darin Allan, "Cops, Cameras, and "Cages:" A Synthesis of Transit Bus Operator Security Methods and their Effectiveness," Presentation made at the Transportation Research Board Annual Meeting, P02-5975 (Washington, DC: January 2001). 11Unless otherwise noted, the information presented throughout this section is drawn largely from individual agency presentations made at the January 2002 TRB Annual Meeting. 12U.S. Department of Transportation, "Remarks for the Honorable Norman Y. Mineta, Secretary of Transportation," provided at the National Transportation Security Summit, (Washington, D.C., October 30, 2001), p. 3. 13For more on the Transportation Security Administration, see their website at http://www.tsa.dot.gov/. 14http://www.tsa.dot.gov/. 15U.S. Department of Transportation, Federal Highway Administration, "Memorandum" (January 2002). Also, personal communication with FHWA personnel on July 3, 2002. 16The bill was initially sponsored by Representative C.W. Bill Young (R-Largo) from the 10th District of Florida. It was introduced in the House on September 14, 2001, as HR-2888, "2001 Emergency Supplemental Appropriations Act for Recovery from and Response to Terrorist Attacks on the United States," and became Public Law No. 107-38 with the President's signing four days later. For details, see www.house.gov/apps/list/pres/tx04_hall/patriot.html. |
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III. New York
State and Local Agency Responses to September 11,
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Prior to September 11, several state and local agencies around New York already had in place measures which proved efficient and effective for responding to the crisis on that day. For example, TRANSCOM,18 a consortium of 16 transportation and enforcement agencies in the New York/New Jersey/Connecticut Tri-State region, used ITS, including previously deployed variable message signs, to re-route traffic around Manhattan during the crisis. The resources of the I-95 Coalition membership,19 including variable message signs and highway advisory radio systems throughout the northeast, were also used to keep travelers away from New York City. Cars equipped with electronic toll tags were used as anonymous traffic probes, providing real-time information on traffic flows outside affected areas. Similarly, geographic information systems (GIS) already in place, with information easily accessible via the Internet, allowed for real-time decision-making on the day of the attacks. GIS technologies also helped in the immediate recovery efforts as officials gathered all the available information in a central GIS database so they could quickly create critical maps (e.g. modeling the collapse, plumes of contaminants, traffic patterns, utilities, power grids, telephone coverage). In fact, over 5,000 maps were produced in this process. Among the lessons learned:
Specific state and local agency responses to the terrorist attacks are summarized in the following paragraphs.
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17Unless otherwise noted, the information presented throughout this section is drawn largely from individual agency presentations made at the January 2002 TRB Annual Meeting. 18TRANSCOM acts as an information clearinghouse, alerting public and private organizations of traffic incidents, coordinating construction schedules, and undertaking research and demonstration projects for the benefit of the region. 19Begun informally by a group of transportation professionals who were interested in overcoming barriers to institutional cooperation, the I-95 Coalition became a formal entity in 1993, after the USDOT labeled the area of I-95 between Virginia and Maine a priority corridor. The Coalition today is a regional partnership of major public and private transportation agencies, toll authorities and industry associations. 20http://www.state.ny.us/security/. 21See USDOT, FHWA, Focus (Washington, D.C., Nov 2001), http://www.tfhrc.gov/focus/nov01/nineoneone.htm. 22NYS DOT, "New York MOVES: ITS Program Status Report," June 2002, p. 12. |
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IV. Security and ITS
Activities Elsewhere Across the Nation
In the wake of September 11, several state departments of transportation raised some key questions which warrant further discussion. Among these are:
Many state and local agencies are not waiting for these questions to be formally addressed. Like the initiatives in New York that were described in the previous section, state and local measures are being implemented across the country. For example, Texas, Virginia, and California are each conducting vulnerability assessments of critical bridges. The general process involves:
The cost estimate in California was $1-$4M per facility for the16 most vulnerable and important bridges. Organizational and Association Initiatives Many organizations and associations representing transportation interests have initiated research and/or information sharing activities. The following is a list of these organizations and a brief description of their activities. (Additional information and periodic updating of activities can be found on each organization's website.)
A number of other organizations have also created security-related task forces or committees. Among them, The National Association of Counties (NACO) has created a task force on homeland security which will provide a direct link between counties and federal agencies, especially the Office of Homeland Security in the White House. The mission of the task force is to determine how counties and the association can help the federal government and how NACO can assist counties with security issues.25 The Transportation Research Board (TRB) has a Committee on Critical Transportation Infrastructure Protection which is also sponsoring a website on security resources.26 Similarly, The New York Public Transit Association (NYPTA)27 formed a Safety and Security Committee to discuss steps taken by public transit systems to improve and ensure the safety and security of passengers and drivers. The Committee will investigate new technologies and systems available; serve as a mechanism to share information among transit agencies; and make recommendations to NYPTA and NYSDOT on safety and security issues. Some organizations have created websites, including The American Public Transportation Association (APTA), which offers a site with current information on transit security issues. Research efforts and/or workshops are being conducted by various institutions, including the Norman Y. Mineta International Institute for Surface Transportation Policy Studies (MTI),28 and The Association of American Geographers, which has initiated a two-part research effort. The first part involves an assessment of the utility of geographic dimensions in emergency planning. The second part of the effort will be a pilot study on the use of geographic technology in dealing with terrorism and post terrorist disaster rescue relief efforts. The Palisades Group USA has been holding a monthly National Teleconference Series on Counter-Terrorism in Public Transit.29 After September 11, a group of leading design and construction industry leaders and several federal agencies came together to create The Infrastructure Security Partnership (TISP) which is focusing on security in design and construction.30 Finally, the Intelligent Transportation Society-NY (ITSNY) is surveying their membership on ideas for using ITS to improve security. Several member firms are already working at the national level. ITSNY co-sponsored two Conferences on ITS and Public Safety in Syracuse on March 13 and 14. Though this list is by no means exhaustive, it does provide a sample of the many activities that exist around the nation. |
23For more information see AASHTO's website at www.AASHTO.org. 24ITS America, Press Release (Washington, D.C., 19 October 2001). 25Emergency Preparedness News 26, 1 (1 January 2002): pages? 26See http://san-antonio.tamu.edu/trba5021/Members/members.html for information about the Committee. Also see the website they maintain for information on security at http://www4.trb.org/trb/homepage.nsf/web/security. 27Formed in 1983 by representatives of the transit industry, NYPTA is a nonprofit association of public and private transportation service providers, private sector manufacturers and consultants, and state government agencies. See http://www.nytransit.org. 28MTI was created by Congress through the Intermodal Surface Transportation Efficiency Act of 1991 (ISTEA) and established in the California State University system at the San José State University College of Business. Its homepage is http://transweb.sjsu.edu/index.asp. Also see http://www.transweb.sjsu.edu/rpd9805a.htm for information on one of the projects. 29See http://www.palisadesgroup.com/PGUSA/NationalTeleconferences.htm for a list of sessions. 30http://www.tisp.org/. |
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V. Policy Considerations
The national and State-wide response to the attacks of September 11, 2002 was swift. A large number of activities have been launched and many improvements to homeland security have already been made. However, improved homeland security is a long-term process. The initial response can be characterized as one that engages all possible human resources available for homeland protection on an around-the-clock basis with no expense spared. The increased presence of armed security forces and military forces at civilian facilities is evidence of this. Many of these personnel are working long hours, on overtime, a situation which cannot be sustained in the long term. While there will continue to be a need for security personnel, a national search is underway for technologies that can provide increased security with less manpower. Thus, the application of technologies (ITS) for homeland security is just beginning, and their development will require monitoring over a long period of time. Potential Issues for New York to Address New York State agencies appear to be at the forefront of dealing with security issues as a result of a long history of planning for and dealing with major incidents, as well as their experience in dealing with the events of September 11, 2001. Nevertheless, there are several issues related to ITS and security that will need to be addressed to varying degrees in the coming months.
These difficulties are not unique to the New York metropolitan region. Indeed, a recent assessment by the Public Safety Wireless Network program (PSWN) found that only Michigan and Delaware have what would be considered mature integrated public safety systems.31 Of further concern is the lack of "Enhanced Wireless 911" capability. Most wire line phones in the United States now have enhanced service, which means they have automated number identification, automated location identification, and selective routing when dialing 911. Though more than 50% of 911 calls are now made from wireless phones, enhanced service is not available. Recognizing the importance of establishing the same level of emergency service for wireless phones that exists for wire lines, the FCC is requiring wireless providers to make enhanced wireless 911 service available in phases. The process was to begin October 1, 2001, but implementation of this system has been delayed for technical and institutional reasons. At this point, the State of Rhode Island will be the first state to have enhanced wireless 911. There is activity in New York State to implement enhanced wireless 911. Indeed, the process for implementing enhanced wireless 911 has a long history with the Executive and the Legislature. Ongoing issues include funding responsibility, surcharge revenues, routing, technology, training, caller rights, and education. What is new in recent years is the inclusion of the ITS community, the tie-in to incident management and also the direct involvement of the medical community which sees enhanced communications as a benefit to earlier and more informed treatment. The Emergency Call Locator Partnership, a partnership between the Department of Emergency Medicine at Upstate Medical University in Syracuse, and the National Highway Traffic Safety Administration, has developed an implementation template for enhanced wireless 911 for New York to, "develop and deploy the infrastructure needed to maximize the effectiveness of wireless 911 emergency communications across New York."32 Numerous stakeholders have been involved, including: fire, police and EMS administrators; telecommunications and traffic safety engineers; elected officials; emergency care providers; Public Safety Answering Point (PSAP) administrators; and telephone and wireless communications providers.33 On March 14, the Partnership's stakeholders convened a conference in Syracuse. After two years of discussion, the Partnership is planning to make available a New York State Wireless Enhanced 911 Implementation Guide. Participating organizations will sign on to the document to demonstrate solidarity in implementing an enhanced wireless 911 system in New York as soon as possible. Also discussed on March 14 was the proposed implementation of a statewide wireless radio network (SWN) by the NYS Office for Technology (OFT). According to their website:
There was a consensus on the need for such a network, and many participants voiced their concerns that existing radio communications systems are out-of date and need replacing. It is important to keep in mind that with respect to identifying location, the current FCC requirement for enhanced wireless 911 is an ability to gauge position based solely on longitude and latitude. However, following September 11, there has also been pressure on the Federal Communications Commission to require police and telecommunications carriers to implement technologies that will aid in locating wireless transmissions inside large structures, including subway stations, office buildings and schools. Further, the Federal government is speeding up a priority cellular network for emergency and national security personnel. (There is already a priority system for landline communications called the Government Emergency Telecommunications Service which was used on 9/11 and performed well.) One of the early meetings of the Caucus focused on the use of ITS in response to the events of 9/11. Among other items, the Caucus is focusing on ITS issues in conjunction with the reauthorization of federal transportation funding legislation (TEA-21), which expires in September 2003. The Caucus held a hearing on the ITS aspects of the reauthorization of TEA-21. (ITS America hosted the ITS Caucus kick-off reception and technology demonstration on March 6, 2002.) Given the geographic size and population of New York State, as well as the complexities of the economic and political framework here, it might be worthwhile to establish a similar caucus in the New York State Legislature. The Caucus could monitor state activities; liaise with Congress and New York Congressional Caucus members; monitor and provide input for federal legislation (there are a number of bills before Congress that deal with Homeland Security and provide federal funding to states and local governments); and liaise with New York State industries involved in ITS. |
31Jim McKay, "Reconciling the Differences," Government Technology (October 2001). An 32http://www.upstate.edu/cellular911/ 33In particular, the Fire Association of the State of NY, the Department of Criminal Justice Services, the NYS Wireless Carriers Coalition, the NYS Department of Health EMS Bureau, and various legislative and technology experts were involved from the beginning of the process. For more information on this partnership, seehttp://www.upstate.edu/cellular911/about.shtml. 34http://www.oft.state.ny.us/index.htm. 35Prior to his 2002 electoral defeat, Felix Grucci, Jr. (R-NY1) was also on the Caucus. |
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References
Allan, Darin. "Cops, Cameras and Cages; Synthesis of Transit Bus Operator Security Methods and Their Effectiveness. Presentation at the Transportation Research Board Annual Meeting, Washington, D.C.: January 2001. Apogee Associates. ITS National Investment and Market Analysis. Report prepared for ITS America and the United States Department of Transportation. Washington. D.C.: ITS America, 1997. Briggs, Valerie, and Keith Jasper. Organizing for Regional Transportation Operations: Houston TranStar Case Study. McLean, VA: Booz-Allen & Hamilton, August 2001. __________. Organizing for Regional Transportation Operations: San Francisco Bay Area Case Study. McLean, VA: Booz-Allen & Hamilton, August 2001. __________. Organizing for Regional Transportation Operations: Vancouver TransLink. McLean, VA: Booz-Allen & Hamilton, August 2001. Emergency Preparedness News 26, 1 (January 1, 2002). Huber, Peter, and Mark P. Mills. "How Technology Will Defeat Terrorism." City Journal 12, 1 (Winter 2002): 24-33. Intelligent Transportation Society of America. National Intelligent Transportation Systems Program Plan: A Ten-Year Vision. Washington D.C.: ITS, January 2002. __________. "News from the TRB Annual Meeting." News. (15 January 2002). www.itsa.org. __________. Press Release. (19 October 2001). Konheim, Carolyn S. "Intelligent Transportation Systems in the New York Region: An Overview." ITS-NY Newsletter (Winter 1998/99). McKay, Jim. "Reconciling the Differences" Government Technology (October 2001). Peyrebrune, Henry. Technology: A Bridge to the States. Washington, D.C.: Public Technology Incorporated, 1996. New York State Department of Transportation. Brochure on ITS in New York. Albany: NYSDOT, Summer 2001. Public Technology Incorporated. How Can We Work Together? A Guidebook to Smart Response through Coordinating Local Public Safety and Transportation Information and Technology. Washington D.C.: PTI, February 2001. Rudin Center for Transportation Policy and Management, New York University. Large City Technical Exchange and Assistance Program: Final Report on Inter-jurisdictional Coordination for Traffic Management, Interagency Fiber Optic Sharing, Planning for Pedestrians in Large Urban Centers. New York City: Rudin Center, November 2000. United States Department of Transportation. Federal Highway Administration. "September 11 and Beyond: Highway Agencies Respond to Keep America Mobile and Secure." Focus Newsletter. Washington, D.C.: USDOT, Nov 2001. __________. ITS Resource Guide. Washington, D.C.: 2001. __________. What Have We Learned From Intelligent Transportation Systems. Washington D.C.: December 2000. __________. United States Senate. Statement before the Committee on Environment and Public Works, Subcommittee on Transportation, Infrastructure and Nuclear Safety, by Christine Johnson. Washington, D.C. (September 10, 2001). |
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