Core Attributes These attributes are common across all feature classes extracted as part of the SWAAI project where applicable.

• UniqueID Unique ID for this feature type, assigned by Cyclomedia staff.

• RouteID Route ID based on ITD’s Esri Roads & Highways linear referencing system (LRS). A copy of ITD’s LRS network was provided to Cyclomedia.

• RouteDirectionCode Travel direction of nearest highway lane to feature, ascending (A) or descending (D).

• Measure or FromMeasure/ToMeasure LRS measure (in the case of discrete point features) or from/to LRS measures (in the case of line or polygon features) based on ITD’s Esri Roads & Highways LRS.

• SideOfRoad Side of road location of feature, generally L (left) or R (right). Values for B (both), C (center), and N (neither) were also included as text domain values for use where applicable.

• X/Y/Z or From_X/To_X/From_Y/To_Y/From_Z/To_Z Longitude (X), Latitude (Y), and Elevation (Z) values were included for each extracted feature (X/Y/Z for discrete points, to/from X/Y/Z for lines and polygons) Rather than the metric northing/easting present in the Idaho Transverse Mercator (IDTM, WKID: 8826) projection, the projection used for all SWAAI datasets, X and Y are decimal-degree latitude/longitude. The elevation field, Z, is in U.S. feet.

• StreetSmartLink URL link to the feature’s location in Cyclomedia’s browser-based Street Smart photo and LiDAR depth surface viewer. Following the link brings the user directly to the closest Street Smart collection location and angles the view to look directly at the feature in the 360° photograph.

• Comments General comments field.

• CollectedDate Date the feature was observed and field-collected by Cyclomedia during the vehicle-based data collection process.

Key Attributes These attributes are unique to this feature class, or are Core Attributes used differently than other feature classes extracted as part of the SWAAI project.

• FourInchSolidWhite Quantity of 4” solid white paint striping within tenth-mile pavement striping feature, in linear feet.

• FourInchSolidYellow Quantity of 4” solid yellow paint striping within tenth-mile pavement striping feature, in linear feet.

• EightInchSolidWhite Quantity of 8” solid white paint striping within tenth-mile pavement striping feature, in linear feet.

• FourInchDashedWhite Quantity of 4” dashed white paint striping within tenth-mile pavement striping feature, in linear feet.

• FourInchDashedYellow Quantity of 4” dashed yellow paint striping within tenth-mile pavement striping feature, in linear feet.

• EightInchDropWhite Quantity of 8” lane drop white paint striping within tenth-mile pavement striping feature, in linear feet.

• FourInchDottedWhite Quantity of 4” dotted white paint striping within tenth-mile pavement striping feature, in linear feet.

• FourInchDottedYellow Quantity of 4” dotted yellow paint striping within tenth-mile pavement striping feature, in linear feet.

• SixInchSolidWhite Quantity of 6” solid white paint striping within tenth-mile pavement striping feature, in linear feet.

• SixInchSolidYellow Quantity of 6” solid yellow paint striping within tenth-mile pavement striping feature, in linear feet.

• TwelveInchSolidWhite Quantity of 12” solid white paint striping within tenth-mile pavement striping feature, in linear feet.

• SixInchDashedWhite Quantity of 6” dashed white paint striping within tenth-mile pavement striping feature, in linear feet.

• SixInchDashedYellow Quantity of 6” dashed yellow paint striping within tenth-mile pavement striping feature, in linear feet.

• TwelveInchDropWhite Quantity of 12” lane drop white paint striping within tenth-mile pavement striping feature, in linear feet.

• SixInchDottedWhite Quantity of 6” dotted white paint striping within tenth-mile pavement striping feature, in linear feet.

• SixInchDottedYellow Quantity of 6” dotted yellow paint striping within tenth-mile pavement striping feature, in linear feet.

• PassingType Notes whether passing is permitted within the tenth-mile segment specifying which direction passing is permitted, if applicable. Includes the PassingType domain, with the following coded domain values:

  • Not Permitted (1) Vehicles are not allowed to pass in either direction within the segment.

  • Permitted (2) Vehicles are allowed to pass in either direction within the segment.

  • Permitted – Positive Direction (3) Vehicles traveling in the positive direction (the direction of increasing LRS measures) are allowed to pass within the segment, while vehicles traveling in the negative direction are not.

  • Permitted – Negative Direction (4) Vehicles traveling in the negative direction (the direction of decreasing LRS measures) are allowed to pass within the segment, while vehicles traveling in the positive direction are not.

• From_Z/ToZ Elevation (Z) values were excluded as data fields since this dataset represents a statistical quantification of features in its vicinity, rather than the physical locations of any of those features in particular.

Spatial Reference All data extracted as part of the SWAAI project is projected to Idaho Transverse Mercator (WKID: 8826), using the NAD 1983 (WKID: 4269) geographic coordinate system. NAVD88 (WKID: 6360) was the vertical coordinate system used for all elevation measurements.