I was typing this up when Phil responded. There are also some links following my comments that are good for newbies as well as veterans of the industry.
Phil is correct that everything listed on the DOT HazMat Table (some carriers copy and add additional information) is HazMat and certain attributes of the shipment or later events such as additional shipments being picked up my trigger certain regulations.
Most if not all of you are aware of the following; however it is good information for newcomers.
Commercial Motor Vehicle: Basically any vehicle in commerce with a GVWR in excess of 10,000 lbs or requires placarding regardless of size including cars.
If the vehicle requires placarding, the driver must have a HazMat endorsement.
As mentioned earlier all items listed on the HazMat table are HazMat based upon the guidelines in the document. The shipper is responsible for accurately filling out the paperwork. The driver shares responsibility for reviewing the paperwork prior to accepting the shipment (whether or not the driver has a CDL). That being said, the Feds will usually put all of the responsibility on the Shipper.
The HazMat material listed in the table may not require a CDL or HazMat endorsement if the shipment weighs less than an amount requiring placards; however, it may become hazmat if the driver picks up another load (I realize expediters usually have not more than one load, but it gets the point across) of HazMat where the total of both shipments is now a quantity that the vehicle requires placarding; therefore the driver would need to have a CDL with HazMat endorsement. (Good example in the shipping paper link below).
If you are driving a cargo van and the HazMat is less than an amount requiring placards, you do not need a CDL w/ HazMat endorsement (you can't get a HazMat endorsement unless you have a CDL). If it is a quantity requiring placards then you need a CDL with HazMat endorsement.
HazMat has different thresholds for certain modes of transport. For example Acetylene, dissolved 2.1 UN1001 is HazMat and requires placards if more than 1,000 lbs; however it is forbidden to be transported on Passenger aircraft, but may be transported on Cargo aircraft in small quantities. It is also considered a Hazardous material when sitting in a warehouse. A driver can pick up one shipment of Acetylene weighing 700 lbs. without requiring placards; therefore does not need HazMat endorsement and may not need a CDL if placed in cargo van, Sprinter, or other vehicle less than 26,001 GVWR. However, if the driver makes an additional pickup of the same or another type of HazMat that weighs 301 lbs. the driver now needs a CDL with a HM endorsement since the total weight is more than 1,000 lbs.
Radiopharms... Class 7, yellow III require a CDL with HazMat endorsement in ANY quantity.
It is permissible to haul hazmat in cargo vans; requiring or not requiring placards.
This is why general awareness training should be given to ALL drivers so they know the basic requirements to review paperwork and identify commodities that they may not be authorized to pick up.
Shipping Paper Regulations:
https://hazmatonline.phmsa.dot.gov/...ments/Guide for Preparing Shipping Papers.pdf
Commercial Motor Carrier Groups:
Commercial motor vehicle groups. - Federal Motor Carrier Safety Administration
Placarding guidelines:
http://www.phmsa.dot.gov/staticfile...esentation/Placarding_Requirements(04-07).pdf
How to Comply with Hazmat Regs:
How to Comply with Federal Hazardous Materials Regulations - Federal Motor Carrier Safety Administration
HazMat Table 2:
Electronic Code of Federal Regulations: