State Trooper Map Reading and Navigation 5 — Questions and Answers
Question 1: A trooper is setting up a perimeter around a 4-block area. Using map coordinates, the block corners are at A(0,0), B(4,0), C(4,4), D(0,4). Which roads form the perimeter?
- The roads along all four outer edges of the 4-block square (Correct answer)
- Only the two longest roads
- The diagonal roads connecting A to C and B to D
- The interior roads within the block
Correct answer: The roads along all four outer edges of the 4-block square
A perimeter encompassing a rectangular block area requires officers posted along all four outer boundary roads.
Question 2: When using a GPS unit in a police vehicle, the trooper notices the device shows 'HDOP 8.' What does a high HDOP value indicate?
- Poor satellite geometry, resulting in reduced position accuracy (Correct answer)
- The GPS has excellent satellite coverage
- The vehicle is traveling at high speed
- The GPS battery is low
Correct answer: Poor satellite geometry, resulting in reduced position accuracy
HDOP (Horizontal Dilution of Precision) measures satellite geometry quality; a value of 8 indicates poor geometry and less accurate position data.
Question 3: A trooper needs to identify the fastest route between two points on a highway map. Which map feature provides the most useful information for this decision?
- Road classification and posted speed limits shown in the legend (Correct answer)
- The color of county boundary lines
- The map's publication date
- Elevation contour lines
Correct answer: Road classification and posted speed limits shown in the legend
Road classification (interstate, US highway, state route) combined with posted speed limits tells a trooper which routes allow the highest legal speeds.
Question 4: On a map, what does a symbol of a small airplane near a labeled name typically indicate?
- A public or private airport or airfield (Correct answer)
- A military no-fly zone
- A helipad on a hospital
- A crop duster operating area
Correct answer: A public or private airport or airfield
The airplane symbol on maps universally denotes an airport or airfield, which may be relevant for emergency response coordination.
Question 5: A trooper is relaying a location to a helicopter using compass bearings and distance. The helicopter is at a fixed point; the trooper says the subject is at '270 degrees, one mile.' In which direction does the helicopter fly?
- Due west, one mile (Correct answer)
- Due east, one mile
- Due north, one mile
- Due south, one mile
Correct answer: Due west, one mile
A compass bearing of 270 degrees corresponds to due west; the helicopter must fly one mile west to reach the reported location.
Question 6: A trooper is reading a map that uses the UTM (Universal Transverse Mercator) coordinate system. What does the 'Easting' value represent?
- The distance in meters east of the zone's central meridian (Correct answer)
- The distance north of the equator
- The longitude in decimal degrees
- The altitude above sea level
Correct answer: The distance in meters east of the zone's central meridian
In UTM, Easting is the horizontal coordinate measuring meters east (or west) of the central meridian of the UTM zone.
Question 7: During a search operation, a trooper is assigned to search 'Grid Square 7G.' After completing that square, which adjacent square should be searched next to maintain a systematic pattern?
- An adjacent square sharing a common edge, such as 7H or 8G, following the assigned search pattern (Correct answer)
- The square diagonally opposite, such as 8H
- Return to the command post before proceeding to any square
- Skip to the square numbered 14G
Correct answer: An adjacent square sharing a common edge, such as 7H or 8G, following the assigned search pattern
Systematic grid searches move to adjacent squares sharing a border to ensure complete coverage without gaps.
State Trooper Map Reading and Navigation 5
A trooper is setting up a perimeter around a 4-block area.
Using map coordinates, the block corners are at A(0,0), B(4,0), C(4,4), D(0,4).
Which roads form the perimeter?