Federal Regulations:
Federal Motor Carrier Safety Administration (FMCSA)
Pipeline and Hazardous Materials Safety Administration
Occupational Safety & Health Administration (OSHA)
Code of Federal Regulations (CFR)
Other Regulatory:
The Federal Register
Rules and Notices
Federal Rules of Civil Procedure
Commercial Vehicle Safety Alliance (CVSA)
Manual on Uniform Traffic Control Devices (MUTCD)
National Transportation Safety Board (NTSB)
Industry Associations:
American Trucking Associations (ATA)
National Tank Truck Carriers (NTTC)
Intermodal Association of North America (UIIA)
Universities and Research Associations:
Northwestern University Transportation Library
University of Florida Transportation Research Inst.
University of Michigan Transportation Research Inst.
Penn State University Transportation Institute
State Statutes (Cornell Law)
Turner-Fairbank Highway Research Center
Transportation Research Board (TRB)
American Transportation Research Institute (ATRI)
Hazardous Materials:
National Fire Protection Association (NFPA)
National Institute for Occupational Safety & Health (NIOSH)
American Conference of Governmental Industrial Hygienist
CHEM-TOX
CAMEO:ALOHA (EPA)
USDOT; PHMSA Emergency Response Guidebook (2012-ERG)
Law Research:
FindLaw.com
WestLaw
law.com Dictionary