National transporation organizations and other resources:

• United States Department of Transportation 
• Bureau of Transportation Statistics 
• Federal Highway Administration 
• Federal Transit Administration 
• National Highway Traffic Safety Administration 
• Research and Special Programs Administration 
• Transportation Administrative Service Center 
• Office of the Inspector General 
• Surface Transportation Board 
• National Resource Center
• National Transportation Library 
• American Association of State Highway and Transportation Officials 
• Transportation Resources (Princeton) 
• National Rural Transit Assistance Program
• TDOT Civil Rights Publications
• Easter Seals Project Action
• Community Transportation Association of America

Tennessee Rural Transit Systems

• East Tennessee Human Resource Agency
• First Tennessee Human Resource Agency
• Hamilton County Rural Transportation
• Hancock County Rural Transportation
• Mid-Cumberland Human Resource Agency
• Northwest Tennessee Human Resource Agency
• South Central Tennessee Development District
• Southwest Human Resource Agency
• Upper Cumberland Human Resource Agency

Tennessee Urban Transit Systems

• Bristol Tennessee Transit System
• Chattanooga Area Regional Transportation Authority
• Clarksville Transit System
• Franklin Transit System
• Gatlinburg Mass Transit System
• Jackson Transit Authority
• Johnson City Transit System
• Kingsport Area Transit Service
• Knoxville Area Transit
• Memphis Area Transit Authority
• Metropolitan Transit Authority
• Pigeon Forge Fun Time Trolleys

Drug and Alcohol Program Contacts

• FTA Office of Safety and Security
• Office of Drug and Alcohol Policy and Compliance, an Office of the Secretary of Transportation
• U. S. Department of Health and Human Services
• Substance Abuse and Mental Health Services Administration, an Agency of the U. S. Department of Health and Human Services
• American Association of Medical Review Officers
• Substance Abuse Program Administrators Association
• Transit Safety Institute, TSI
• OST's Office of Drug and Alcohol Compliance (202 )366-3784
• FTA Drug and Alcohol Program Manager (202) 366-2896
• FTA Drug and Alcohol MIS Hotline (617) 494-6336

Tennessee and other state departments of transportation:  

• Tennessee State Department of Transportation (TDOT)