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2. UN Recommendations on the Transport of Dangerous Goods

   en.wikipedia.org/wiki/UN_Recommendations_on_the...

   "Dangerous goods" (also known as "hazardous materials" or "HAZMAT" in the United States) may be a pure chemical substance (e.g. TNT, nitroglycerin), mixtures (e.g. dynamite, gunpowder) or manufactured articles (e.g. ammunition, fireworks). The transport hazards that they pose are grouped into nine classes, which may be subdivided into divisions ...

3. Commercial driver's license - Wikipedia

   en.wikipedia.org/wiki/Commercial_driver's_license

   A commercial driver's license is required to operate a tractor-trailer for commercial use. A commercial driver's license (CDL) is a driver's license required in the United States to operate large and heavy vehicles (including trucks, buses, and trailers) or a vehicle of any size that transports hazardous materials or more than 15 passengers (including the driver).

4. HAZMAT Class 6 Toxic and infectious substances - Wikipedia

   en.wikipedia.org/wiki/HAZMAT_Class_6_Toxic_and...

   In the absence of LC 50 data on the poisonous (toxic) constituent substances, the mixture may be assigned a packing group and hazard zone based on simplified threshold toxicity tests. When these threshold tests are used, the most restrictive packing group and hazard zone must be determined and used for the transportation of the mixture.

5. Column: Older drivers reveal strategies for passing that ...

   www.aol.com/news/column-older-drivers-reveal...

   Study guides and strategies: Older drivers have a few tips for those who must take the dreaded California DMV renewal test, with all its 'obscure and ridiculous' questions

6. Driver's licenses in the United States - Wikipedia

   en.wikipedia.org/wiki/Driver's_licenses_in_the...

   The United States Department of Transportation requires all drivers with a commercial driver's license to pass a periodic physical examination every two years before renewal and to be at least 21 years old to operate in interstate commerce or to transport hazardous materials requiring the driver to place placards on the vehicle, but allow ...

7. Column: For drivers 70 and older, the road rage over DMV test ...

   www.aol.com/news/column-drivers-70-older-road...

   Confusing. Trivial. Useless. Laughable. Inconsistent. The road rage over DMV test questions continues for drivers 70 and older.