Glossary

These are some of the common terms and concepts that we use in PC*MILER services.

ConfidenceLevel

Confidence Level indicates the quality of geocoding result. Note: If you receive a result with a confidence level below Level 2, we strongly recommend that you verify the information you have submitted in your API request for accuracy.

  • Level 1: Exact
    An exact match. Trust is 95% or greater AND if address is outside the range listed in the database, the top match is within 100 address units of input address; OR for any other match level if there are multiple matches they are all within 0.1 air miles of each other. For example, “100 Main Street” is input and the best match in the database is “150-250 Main Street”.
  • Level 2: Good
    Good match: Trust is 85% or greater AND if address is outside the range listed in the database, the top match is within 500 address units of input address; OR for any other match level if there are multiple matches they are all within 0.5 air miles of each other. For example, “100 Main Street” is input and the best match in the database is “450-550 Main Street”.
  • Level 3: Uncertain
    Uncertain match: Trust is 50% or greater.
  • Level 4: Failed
    Failed match: Trust is below 50%.

HazMat

U.S. DOT hazmat classifications correspond to PC*MILER HazMat route tye according to the following list:

  • Class 1: Explosives - 3 (Explosives)
  • Class 2: Compressed Gases
    • 2.1: Flammable Gas - 4 (Flammable)
    • 2.2: Non-Flammable Compressed Gas - 1 (General)
    • 2.3: Poisonous Gas - 5 (Inhalants)
  • Class 3: Flammable & Combustible Liquid - 4 (Flammable)
  • Class 4: Flammable Solids
    • 4.1: Flammable Solid - 4 (Flammable)
    • 4.2: Spontaneously Combustible Material - 4 (Flammable)
    • 4.3: Dangerous When Wet Material - 1 (General)
  • Class 5: Oxidizers - 1 (General)
  • Class 6: Poisons
    • 6.1: (part) Inhalation Hazard - 5 (Inhalants)
    • 6.2: (balance) - 1 (General)
    • 6.3: Infectious Substance(Etiologic agent) [Biohazard] - 1 (General)
  • Class 7: Radioactive Materials - 6 (Radioactive)
  • Class 8: Corrosive Liquids - 2 (Caustic)
  • Class 9: Miscellaneous - 1 (General)