ATTRIBUTE

Member of ENTITY: Sample

• ATTRIBUTE-NAME
  Road type

• ATTRIBUTE-DESCRIPTION
  The vehicles were operated over a variety of road types. For each road type, a fixed route was selected. The goal was to find a continuous route that would allow for at least 15 minutes of travel over each road type. Specific routes are documented in Figures 3-8 through 3-18 in the report of the original researchers.

• ATTRIBUTE-ACCURACY
  The first and/or last few of a sequency of measurements associated with the road type may characterize a transition from one road type to another and therefore might not characterize the indicated road type as well as other measurements.

• DOMAIN
  -1 =Indicates external or other staff-mounted measurements. These measurements took place in a parking lot.
  0 =Pre-test measurements made inside the vehicle, while the vehicle was parked in a parking lot selected for low background magnetic fields.
  1 =Rural roads
  2 =Rural secondary roads
  3 =Suburban roads
  4 =Suburban residential roads
  5 =Arterial highways
  6 =Urban streets
  7 =Interstate spur
  8 =Commercial roads
  9 =Turnpike outside city

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