Emergency Response Guide (ERG) Questions
and Answers
What is Step One? - ✅✅-Identify the Material: Identification Number(Placard, Orange Panel, Shipping
Paper or Pagkage)
-Name of Material : Shipping document or Package
What is Step Two? - ✅✅Identify 3-Digit Guide Number Use:
-ID Number of Index in Yellow-bordered pages
-Name of Material Index in Blue-bordered pages
What does the "P" next to a Guide number signify? - ✅✅Indicates that the material may undergo
violent polymerization if subjected to heat or contamination
If Index highlighted in green what does it indicate? - ✅✅That they are a Toxic Inhalation Hazard (TIH)
material, a chemical warfare agent or a Dangerous Water Reactive Material (produces toxic gas upon
contact with water)
What is Step Three? - ✅✅Turn to the numbered Guide (the orange-bordered pages) READ CAREFULLY
If Placard is the only source of information what do you do? - ✅✅Turn to pages 6-7 and use the 3-
digit guide next to the placard and then Proceed to Numbered Guide in ORANGE-bordered pages
Where do you turn if you have a container only? - ✅✅Pages 8-9, Table of Rail Car and Road Trailer
identification chart
How are Hazard Classes of dangerous goods identified? - ✅✅By its class or (division) number or name
Where is the hazard class or division number found? - ✅✅Displayed in the lower corner of a placard
and is required for both primary and subsidiary hazard classes and divisions, if applicable.
, There are nine classes, what are the first 4? - ✅✅Class 1 - Explosives
Class 2 - Gases
Class 3 - Flammable liquids (Combustible liquids)
Class 4 - Flammable Solids; Spontaneously combustible materials; and Dangerous when wet
materials/Water-reactive substances
What are the next four classes? - ✅✅Class 5 - Oxidizing substances and Organic peroxides
Class 6 - Toxic substances and Infectious substances
Class 7 - Radioactive materials
Class 8 - Corrosive substances
What is the last class in the Hazard Classification system? - ✅✅Class 9 - Miscellaneous hazardous
materials/Products, Substances or Organisms
What does an Asterisk on an orange placard represent? - ✅✅Explosives "Compatibility Group"
Double Asterisks represent division of explosive
When trying to identify rail cargo what should be used as a last resort? - ✅✅Recommended Guides
On intermodal containers, doubling of a digit indicates what? - ✅✅Intensification of that particular
hazard.
What does a zero following a digit indicate? - ✅✅That the hazard can be adequately indicated by a
single digit. Zero means it basically is singular (ie 30 means 3)
If a number is prefixed by the letter "X" what? - ✅✅Indicates that the substance will react
dangerously with water (ie, X88)
What tables are the initial isolation and protective action distances in? - ✅✅The Green tables
and Answers
What is Step One? - ✅✅-Identify the Material: Identification Number(Placard, Orange Panel, Shipping
Paper or Pagkage)
-Name of Material : Shipping document or Package
What is Step Two? - ✅✅Identify 3-Digit Guide Number Use:
-ID Number of Index in Yellow-bordered pages
-Name of Material Index in Blue-bordered pages
What does the "P" next to a Guide number signify? - ✅✅Indicates that the material may undergo
violent polymerization if subjected to heat or contamination
If Index highlighted in green what does it indicate? - ✅✅That they are a Toxic Inhalation Hazard (TIH)
material, a chemical warfare agent or a Dangerous Water Reactive Material (produces toxic gas upon
contact with water)
What is Step Three? - ✅✅Turn to the numbered Guide (the orange-bordered pages) READ CAREFULLY
If Placard is the only source of information what do you do? - ✅✅Turn to pages 6-7 and use the 3-
digit guide next to the placard and then Proceed to Numbered Guide in ORANGE-bordered pages
Where do you turn if you have a container only? - ✅✅Pages 8-9, Table of Rail Car and Road Trailer
identification chart
How are Hazard Classes of dangerous goods identified? - ✅✅By its class or (division) number or name
Where is the hazard class or division number found? - ✅✅Displayed in the lower corner of a placard
and is required for both primary and subsidiary hazard classes and divisions, if applicable.
, There are nine classes, what are the first 4? - ✅✅Class 1 - Explosives
Class 2 - Gases
Class 3 - Flammable liquids (Combustible liquids)
Class 4 - Flammable Solids; Spontaneously combustible materials; and Dangerous when wet
materials/Water-reactive substances
What are the next four classes? - ✅✅Class 5 - Oxidizing substances and Organic peroxides
Class 6 - Toxic substances and Infectious substances
Class 7 - Radioactive materials
Class 8 - Corrosive substances
What is the last class in the Hazard Classification system? - ✅✅Class 9 - Miscellaneous hazardous
materials/Products, Substances or Organisms
What does an Asterisk on an orange placard represent? - ✅✅Explosives "Compatibility Group"
Double Asterisks represent division of explosive
When trying to identify rail cargo what should be used as a last resort? - ✅✅Recommended Guides
On intermodal containers, doubling of a digit indicates what? - ✅✅Intensification of that particular
hazard.
What does a zero following a digit indicate? - ✅✅That the hazard can be adequately indicated by a
single digit. Zero means it basically is singular (ie 30 means 3)
If a number is prefixed by the letter "X" what? - ✅✅Indicates that the substance will react
dangerously with water (ie, X88)
What tables are the initial isolation and protective action distances in? - ✅✅The Green tables
