There are concerns about the vulnerability of U.S. agriculture to the deliberate introduction of animal and plant diseases (referred to as agroterrorism). Response to agricultural emergencies—whether attributed to agroterrorism or naturally occurring outbreaks of food contamination or animal disease—often requires immediate (within hours) isolation http://onlinepubs.trb.org/Onlinepubs/nchrp/nchrp_rpt_525v13.pdfand/or quarantine of potential infection or contamination areas. This guide provides recommended practices and procedures associated with traffic control on local and state roads during agricultural emergencies. The guide should aid state and local officials in responding to agricultural emergencies. The guide was reviewed by many state and local agencies, and workshops were held in Dodge City, Kansas; Mankato, Minnesota; West Plains, Missouri; and Athens, Tennessee. Scenarios of agricultural emergencies were included in these workshops to gauge how useful the guide was in aiding local agencies in establishing and maintaining traffic control in quarantine situations. The guide contains traffic control plans for three levels of traffic control based on the type of disease and location of the traffic control point. This report may be accessed by Internet users at The guide is supplemented online with a downloadable PowerPoint slide show and a detailed research report. The Midwest Research Institute prepared this volume of NCHRP Report 525 under NCHRP Project 20-59(22).Emergencies arising from terrorist threats highlight the need for transportation managers to minimize the vulnerability of travelers, employees, and physical assets through incident prevention, preparedness, mitigation, response, and recovery. Managers seek to reduce the chances that transportation vehicles and facilities will be targets or instruments of terrorist attacks and to be prepared to respond to and recover from such possibilities. By being prepared to respond to terrorism, each transportation agency is simultaneously prepared to respond to natural disasters such as hurricanes, floods, and wildfires, as well as humancaused events such as hazardous materials spills and other incidents. This is the thirteenth volume of NCHRP Report 525: Surface Transportation Security, a series in which relevant information is assembled into single, concise volumes—each pertaining to a specific security problem and closely related issues. These volumes focus on the concerns that transportation agencies are addressing when developing programs in response to the terrorist attacks of September 11, 2001, and the anthrax attacks that followed. Future volumes of the reports will be issued as they are completed. To develop this volume in a comprehensive manner and to ensure inclusion of significant knowledge, available information was assembled from numerous sources, including a number of state departments of transportation. A topic panel of experts in the subject area was established to guide the researchers in organizing and evaluating the collected data and to review the final document. This volume was prepared to meet an urgent need for information in this area. It records practices that were acceptable within the limitations of the knowledge available at the time of its preparation. Work in this area is proceeding swiftly, and readers are encouraged to be on the lookout for the most up-to-date information. Volumes issued under NCHRP Report 525: Surface Transportation Security may be found on the TRB website at http://www.TRB.org/SecurityPubs. (Author/publisher)
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