Geographic Knowledge and Map Reading Flashcards
7 cards from real 911 Operator Test practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Geographic Knowledge and Map Reading flashcards as text
A caller reports an accident at the intersection of two streets but is unsure which street is the primary road. How should a 911 dispatcher determine the primary street?
Answer: By the street number that appears first on the CAD map
Dispatchers rely on the CAD (Computer-Aided Dispatch) system's map data to identify the primary street at any intersection.
What does it mean when a street address is listed as '100 block of Elm Street'?
Answer: The address is between house numbers 100 and 199
The '100 block' refers to the range of addresses from 100 to 199 on that street.
A caller describes an emergency near a freeway on-ramp. Which piece of information is MOST critical for dispatching accurately?
Answer: The direction of travel and nearest mile marker or cross street
Direction of travel and the nearest mile marker or cross street precisely locate the caller on a multi-lane freeway.
In US address systems, even-numbered addresses typically appear on which side of the street?
Answer: North or East side
In most US municipalities, even numbers are assigned to the north or east side of streets and odd numbers to the south or west side.
A caller reports being lost and describes seeing a green highway sign that reads 'Exit 47 — Springfield 2 miles.' What can the dispatcher infer?
Answer: The caller is approximately 2 miles from the Springfield exit
Exit signs indicate the name of the next exit and the distance to it, placing the caller about 2 miles before the Springfield exit.
What is the purpose of a grid coordinate system used in dispatch mapping?
Answer: To provide a standardized alphanumeric location reference for any point on the map
Grid coordinates provide a quick, standardized way to pinpoint any location on a dispatch map using alphanumeric references.
A 911 caller says they are near a 'dead end' street. What should the dispatcher immediately note about unit response?
Answer: Units may have only one entry/exit route, which could complicate response and egress
Dead-end streets have a single access point, which can limit how units approach and exit, especially in fast-moving or dangerous situations.